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ART000926644 | oai_dc | Distribution of late Quaternaty tephra layers in the western part of the Ulleung Basin,East Sea | Distribution of late Quaternaty tephra layers in the western part of the Ulleung Basin,East Sea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Myong-HoPark(Korea Institute of Geoscience and Mineral Resources); Il-Soo Kim(Yonsei University); Byong-JaeRyu(Korea Insititute of Geoscience and Mineral Resources)"
] | Lithologies and stratigraphic relationships of lateQuaternary core sediments were examined in three piston cores,recovered from the western Ulleung Basin. The approximately 8-m long cores consist of muddy sediments that are interbedded withlapili and ash layers. The morphological and major element com-positional studies suggest that volcanic glas shards of the tephralayers are equivalent to those of fallout deposits of the Ulleung -Oki(ca. 9.3 ka), Aira-Tanzawa (ca. 22-24.3 ka), and Uleung-Yamato(ca. 25-33 ka). The ocurrence of the lapilli layers in the westernUleung Basin implies that the known falout distribution of pumice-type glass shards can be extended about 50 to 100 km to the west. | 지질학 | null | kci_detailed_000236.xml | |||
ART000899742 | oai_dc | Seaonal changes in sea surface temperature of the subtropical North Pacific during the last glaciation | Seaonal changes in sea surface temperature of the subtropical North Pacific during the last glaciation | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"KyungEunLee(서울대학교); Young-GyuPark(Global Ocean Research)"
] | Proxy records of sea surface temperature (SST) nearHawaii in the North Pacific reveal that seasonal changes in SSTincreased during the Last Glacial Maximum (LGM); the Augusttemperature was about 1C cooler during the LGM than today,while that for February was 3C cooler. Here we investigated thecauses of the intensified glacial seasonality by considering (1) vari-ations in local heating and coling due to changes in orbital forcing,(2) variations in the vertical thermal structure of seawater, and (3)changes in the large-scale ocean circulation. Our results suggestthat changes in the North Pacific subtropical gyre represent amore plausible cause for the intensified seasonality than the othertwo factors. | 지질학 | null | kci_detailed_000236.xml | |||
ART000899818 | oai_dc | Comparison of Korean and Japanese Teritary fossil wood floras with special references to the genus Wataria | Comparison of Korean and Japanese Teritary fossil wood floras with special references to the genus Wataria | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Eun Kyoung Jeong(Chonbuk National University); Kyungsik Kim(Chonbuk National University); JongHeon Kim(Kongju National University); Mitsuo Suzuki(Tohoku University)"
] | Among 64 fossil woods collected from the UpperCoal-bearing Formation of Janggi Group, Pohang, Korea, fourspecimens have been characterized by their distinct ring porosityand the presence of tile cells in rays. After detailed anatomicalstudies, we could identify them as two species of Wataria-W.miocenica and W. parvipora. Genus Wataria, known as an extincttaxon of Sterculiaceae, has been found only in the Tertiary for-mations in Japan. Most of these sterculiaceous plants are thermo-philic and reportedly never inhabited in the Korean Peninsula.The existence of fossil woods of Wataria in Korea supports the ideaof a common flora established in both countries during the Ter-tiary. In Japan, fossil woods of Wataria have been found only dur-ing the early Miocene formations. Therefore, the age of the UpperCoal-bearing Formation can be said of as the early Miocene. | 지질학 | null | kci_detailed_000236.xml | |||
ART000926681 | oai_dc | Recent developments in chemical oceanography of the East(Japan) Sea with an emphasis on CREAMS findings: A review | Recent developments in chemical oceanography of the East(Japan) Sea with an emphasis on CREAMS findings: A review | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Dong-Jin Kang(서울대학교); Kyung-Eun Lee(서울대학교); Kyung-Ryul Kim(서울대학교)"
] | The understanding on the chemistry of the East(Japan) Sea, a typical mid-latitude marginal sea, has been dra-matically improved through the CREAMS expeditions, an interna-tional cooperative study, carried out during 1990s. The CREAMSstudies confirmed that the East Sea has undergone dramaticchanges during the last 50-60 years. One of the most prominentcharacteristics of these changes is a rapid decrease of dissolvedoxygen in deep waters. There even has been a claim that the EastSea might become an anoxic sea by next 200 years. While thecauses for these changes are still under investigation, it has beenshown that these changes are mainly due to the modification in themode of deep water ventilation system in the East Sea: a slowdown and complete stop of bottom water formation accompaniedby an enhancement of upper water formation instead. A simplemoving-boundary box model (MBM) was developed in order toquantify the processes involved in such changes for the last 50-60years. The model predicts that the East Sea may remain as a well-oxygenated sea despites recent rapid oxygen decreases in deepwaters in association with structural changes such as a shrinkingof oxygen-depleted deeper waters and an expansion of oxygen-richupper in the East Sea in next few decades. The sedimentary record,however, shows that the East Sea has undergone oscilation betwenwel-oxygenated environment and anoxic environment during lastglacial period in association with the eustatic sea-level change. Sev-eral flooding processes such as intrusion of cold Oyashio Currentand less saline, nutrient-rich seawaters from East China Sea andYelow Sea has been proposed. Being a semi-closed basin, the car-bon cycle of the East Sea has been a subject of CREAMS inves-tigation. The East Sea serves as a strong sink of atmospheric CO2;penetration of anthropogenic CO2 all the way to the bottom isclear with its very rapid conveyor-belt system. | 지질학 | null | kci_detailed_000236.xml | |||
ART000899741 | oai_dc | Non-marine successions in the northwestern part of Kyongsang Basin(Early Cretaceous): Fluvial styles and stratigraphic architecture | Non-marine successions in the northwestern part of Kyongsang Basin(Early Cretaceous): Fluvial styles and stratigraphic architecture | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"조형래(Korea Ocean Research and Development)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART000926649 | oai_dc | Polyphase halokinesis in the offshore Mississippi delta region,northern Gulf of Mexico | Polyphase halokinesis in the offshore Mississippi delta region,northern Gulf of Mexico | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Don Sunwoo(Korea Institute of Geoscience&Mineral Resources); Joel S, Watkins(Texas A&M University)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART000899819 | oai_dc | Comparison of pH and counter-ion effect in surfactant-assisted remediation | Comparison of pH and counter-ion effect in surfactant-assisted remediation | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Dal-Heui Lee(서울대학교); 류종식(서울대학교); 김은식(서울대학교)"
] | In order to determine whether pH or counter-ion ismore effective in modifying surfactant effectiveness, column exper-iments were performed. Otawa sand was selected for model soiland toluene was used as a model contaminant. DOSL (anionic sur-factant) was used for this study. The greatest recovery of toluenein column tests was 92%, which was obtained with a surfactant +NaOH. The effect of NaCl in changing effectiveness was less thanthat of NaOH. Much greater effectiveness was observed using sur-factant solutions containing NaOH. The effect of NaOH in chang-ing effectiveness was not due to Na+ effects, but to the OH- asshown by these experimental results. The effect of counter-ion(Na+) was small, and was much less than that of pH in surfactant-assisted remediation. | 지질학 | null | kci_detailed_000236.xml | |||
ART000897130 | oai_dc | Stochastic prediction of ground motions in southern Korea | Stochastic prediction of ground motions in southern Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jung-Goo Junn(서울대학교); Nam-Dae Jo(서울대학교); Chang-Eob Baag(서울대학교)"
] | Strong ground motions in southern Korea were sim-ulated using the stochastic method based on the Brune-source andfinite fault models. Input parameters such as Brune stres drop(Ds) and attenuation parameter k were newly estimated using therecent seismic data of years 1999 and 2000 in southern Korea. Theaverage Brune stres drop and the attenuation parameter k wereestimated to be 65-bar and 0.00516+0.000147R, respectively, where Ris the hypocenter distance in km unit. These values are verified bysimulation of ground motions based on the stochastic method forthe 06/02/1999 Gyeongju earthquake. With use of the parameters,strong ground motions in southern Korea were simulated forearthquakes of moment magnitude 5 to 8 using the stochasticmethod. Both the Brune source model and the finite-fault sourcemodel give similar results of simulations for moderate-sized earth-quakes. However, the difference between the results from thesetwo models becomes larger for larger earthquake magnitudes orfor smaller hypocenter distances. Results for the finite-fault modelshow azimuthal variations of ground motions around the fault. | 지질학 | null | kci_detailed_000236.xml | |||
ART001195761 | oai_dc | Multi-sensor data fusion for supervised land-cover classification using Bayesian and geostatistical techniques | Multi-sensor data fusion for supervised land-cover classification using Bayesian and geostatistical techniques | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"No-Wook Park(Korea Institute of Geoscience and Mineral Resources); 문우일(서울대학교); 지광훈(한국지질자원연구원); 권병두(서울대학교)"
] | We propose a geostatistical approach incorporatedto the Bayesian data fusion technique for supervised classificationof multi-sensor remote sensing data. The classification based onlyon the traditional spectral approach cannot preserve the accuratespatial information and can result in unrealistic classificationresults. To obtain accurate spatial/contextual information, theindicator kriging that allows one to estimate the probability ofoccurrence of certain classes on the basis of surrounding pixelinformation is incorporated into the Bayesian framework. Thisnew approach has its merit incorporating both the spectral infor-mation and spatial information and improves the confidence levelin the final data fusion task. To illustrate the proposed scheme,supervised classification of multi-sensor test remote sensing datawas carried out. Analysis of the results indicates that the proposedmethod considerably improves the classification accuracy, com-pared to the methods based on the spectral information alone. | 지질학 | null | kci_detailed_000236.xml | |||
ART001197774 | oai_dc | In-situ rock stress measurement at an open-pit limestone mine using the CCBO technique | In-situ rock stress measurement at an open-pit limestone mine using the CCBO technique | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Seong-Seung Kang(서울대학교); Jun-Mo Kim(서울대학교); Katsuhiko Kaneko(Hokkaido University); Yuzo Obara(Kumamoto University)"
] | In-situ rock stress measurement is performed toestimate the state of stress at the Torigata open-pit limestone minein Japan using the compact conical-ended borehole overcoring(CBO) technique. The significance of the state of in-situ rockstress to evaluate the stability analysis of rock slope is then dis-cussed. The CCBO technique was applied to the two horizontalboreholes, Borehole BH-1 at location I and Borehole BH-2 at loca-tion II. As a result of in-situ rock stress measured from the twohorizontal boreholes using the CCBO technique, the maximumhorizontal principal stress is in the NNE-SSW direction at present.The measured average vertical normal stress (-6.50 MPa) forBoreholes BH-1 and BH-2 is in good agreement with the estimatedaverage overburden stress (-6.60 MPa). The horizontal normalstreses sxx (-5.10 MPa) and syy (-6.00 MPa) are 78.5-92.3% ofthe vertical normal stress s zz (-6.50 MPa) suggesting that largehorizontal stresses exist in Mount Torigata. The ratio of the hor-izontal normal stress to the vertical normal stress is relativelylarge at the measured location. Accordingly, for an appropriateevaluation of the mining-induced rock slope stability, not only thevertical stres components but also the horizontal stress compo-nents component should be considered. | 지질학 | null | kci_detailed_000236.xml | |||
ART000897061 | oai_dc | Estimation of horizontal regional stresses at an open-pit limestone mine by back analysis | Estimation of horizontal regional stresses at an open-pit limestone mine by back analysis | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Seong-Seung Kang(서울대학교); Jun-Mo Kim(서울대학교); Katsuhiko Kaneko(Hokkaido University); Yuzo Obara(Kumamoto University)"
] | Tokyo, Japan, p. 60-63. (in Japanese with English abstract)Mizuta, Y., Sulistianto, B., Kido, T., Kato, S., Kato, K., Shingu, K.,Horinokuchi, K., Fuji, S. and Kimura, S., 1997, Determination ofregional stres field from the local rock stress measurement. Pro-ceding of the Anual Meting 1997 (Expanded Abstract), Sap-poro, Japan, p. 142-145. (in Japanese with English abstract)Nakamura, N., Ohkubo, R., Obara, Y., Kang, S.S., Sugawara, K. andKaneko, K., 19, Rock stres measurement for limestone openpit mine. Procedings of the 5th International Symposium on FieldMeasurements in Geomechanics, FMG-99 (Expanded Abstract),Singapore, p. 375-380.Sugawara, K. and Jang, H.K., 1996, Evaluation of initial rock stressby the orthotropic spherical shell model. Proceedings of the 2ndNorth American Rock Mechanics, Symposium (Expanded Abstract),NARMS 96, Montreal, Auebec, p. 905-912.Sugawara, K., Jang, H.K. and Huang X., 1995a, Analysis of observedinitial stres by the isotropic spherical shell theory and consid-eration. Journal of the Mining and Materials Procesing Instituteof Japan, 1, 913-918. (in Japanese with English abstract)Sugawara, K., Jang, H.K. and Huang X., 195b, Initial stres analysisby the orthotropic spherical shell model. Journal of the Miningand Materials Procesing Institute of Japan, 11, 101-1006. (inJapanese with English abstract)Sugawara, K. and Obara, Y., 1999, Draft ISRM suggested method for | 지질학 | null | kci_detailed_000236.xml | |||
ART001197773 | oai_dc | Thermal and shock metamorphic episodes of the Duwun L6 chondrite: Petrological evidence | Thermal and shock metamorphic episodes of the Duwun L6 chondrite: Petrological evidence | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"최변각(서울대학교); Insoo Ahn(서울대학교); 이민성(서울대학교); 신홍자(한국지질자원연구원)"
] | The Duwun meteorite fell on 23 November 1943 inDuwun-Myeon, Gohung-Gun, Jeonlanam-Do, Korea. Duwun isclassified as ordinary chondrite of L group and type 6. Duwunconsists of olivine, pyroxene, plagioclase, Fe-Ni metals, troilite,chromite and apatite. Relic chondrules with barred olivine, por-phyritic olivine, radial pyroxene and cryptocrysalline textures arefound. Thermometries using on compositions of pyroxene suggestthe recrystallization temperature of ~840oC. Various shock fea-tures recognized in Duwun include planar fractures and wavyextinction in olivine, occurrence of maskelynite, silicate darkeningand polycrystalline texture of kamacite. These observations sug-gest that the Duwun meteorite experienced shock stresses at S3 orS4 stages (~20 GPa). | 지질학 | null | kci_detailed_000236.xml | |||
ART000897132 | oai_dc | Numerical experiments on evolution of contaminant plume in groundwater with hydraulic parameter reduction by biomass growth | Numerical experiments on evolution of contaminant plume in groundwater with hydraulic parameter reduction by biomass growth | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"이강근(서울대학교); 공은영(서울대학교)"
] | A model of groundwater flow and contaminanttransport is proposed that incorporates changes in hydraulicparameters due to biomass growth. The model simulates the cou-pled transport phenomena of biodegradable organic contaminantssuch as hydrocarbon compounds, dissolved oxygen, and biomass.The model starts with flow simulation to compute the velocityfield, which is used to simulate solute transport by the method ofcharacteristics and the finite difference method. The reactionequation incorporating biodegradation kinetics is solved to com-pute the biomass increase. The increased biomass is transformedto biofilm thickness, which reduces the porosity and permeability.The porosity and permeability are updated at each time step of thecomputation. Numerical simulations show that the transport sim-ulations, if the reduction of hydraulic parameters is ignored, arelikely to overestimate the extent of contaminant plume and under-estimate the peak concentration of the plume. | 지질학 | null | kci_detailed_000236.xml | |||
ART000897131 | oai_dc | Armored mudstone boulders in submarine debris-flow deposits, the Hung-hae Formation, Pohang Basin: An evidence for the large-scale slumping of adjacent area of a submarine channel or scar wall | Armored mudstone boulders in submarine debris-flow deposits, the Hung-hae Formation, Pohang Basin: An evidence for the large-scale slumping of adjacent area of a submarine channel or scar wall | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Seung Soo Chun(Chonnam National University); Moon Young Choe(Korea Ocean Research and Development Institute); Sung Kwun Chough(서울대학교)"
] | In the Hunghae Formation of the Pohang Basin,some heavily armored, calcareous mudstone balls (boulders) occurin a chaotic conglomerate bed which was deposited from debrisflow on a steep slope. Sparsely armored or unarmored mudstoneballs are also found in the same bed. Also some isolated armoredmudstone boulders occur in a homogeneous mudstone bed of theformation which is interpreted as hemipelagite. The armored mud-stone balls were most likely formed by retrogressive failures of sub-marine channel or scar wall and subsequent roling over sand andpebble pavement along the submarine channel floor prior to incor-poration into the debris flow. Their occurrence also suggests that alarge-scale slumping should be happened on the upper slope apronor lower prodelta including the submarine channel and be evolvedinto debris flows, resulting in the corporation of the boulders intothem. Some armored mud boulders roled along and passed awaythe channelized gravel pavement, and deposited on hemipelagicmud in lower slope, not having been reworked. | 지질학 | null | kci_detailed_000236.xml | |||
ART000999745 | oai_dc | Scattering of C-band RADARSAT signal on sloping Earth’s surface affected by forest fire areas | Scattering of C-band RADARSAT signal on sloping Earth’s surface affected by forest fire areas | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Sang-Eun Park(서울대학교); Wooil M. Moon(서울대학교)"
] | This study investigates the backscattering propertiesof C-band RADARSAT (SAR) signal over sloping mountainousareas, and evaluates the utility of RADARSAT in natural disasterareas (e.g., forest fires), geological mapping, monitoring of naturalhazards, natural and associated Earths environmental changes.Conventional change detection techniques in remote sensing areadequate for most applications. However, the changes in backscat-tering coefficients (s0) before and after, for example, forest firesare not apparent in certain cases, mainly because of the effects ofsteeply sloping target scattering surface areas. The slopes of amountainous test site can be divided into two cases with respect tothe incident SAR signal look direction: the front and back slopes,where local incidence angles can vary significantly. Depending onthe slope of the scattering surface, the backscattering coefficientincreases to the maximum of 3.3 dB in the front-slope, butdecreases 4.5 dB in back-slope after forest fires. Forest fire burntareas provide a good example of a natural sloping scattering sur-face, which exhibits subtle changes in backscattering coefficientssimilar to the lithological changes in nature. The April 2000 forestfire in Kangwon province, Korea, burned for several weks andwas one of the worst ones in recent years. Among several fire-damaged sites, an area near Samchuk city was investigated indetail with a set of multi-temporal RADARSAT Synthetic Aper-ture Radar (SAR) data to estimate the fire damages as comparedto the unburnt background. | 지질학 | null | kci_detailed_000236.xml | |||
ART000999746 | oai_dc | Analysis of sedimentary facies and depositional environments of the Permian Gondwana sequence in borehole GDH-45, Khalaspir Basin, Bangladesh | Analysis of sedimentary facies and depositional environments of the Permian Gondwana sequence in borehole GDH-45, Khalaspir Basin, Bangladesh | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"H.M. Zakir Hossain(University of Rajshahi); M. Sultan-Ul-Islam(University of Rajshahi); Syed Samsuddin Ahmed(University of Rajshahi); Ismail Hossain(University of Rajshahi)"
] | Lithofacies analysis of the Permian Gondwana sequencein borehole GDH-45 of the Khalaspir Basin was performed with aview to deduce the nature of depositional environments. On thebasis of dominant lithofacies association, the sequence is dividedinto six lithostratigraphic units (units A to F). Five lithofacies (con-glomerate, sandstone, siltstone, mudstone/shale and coal) are iden-tified within these units. Several sub-lithofacies, such as masive,crudely stratified, cross-stratified, ripple and parallel laminatedsandstones are also identified within these lithofacies. The sequenceforms a fining-upward trend with a rare coarsening-upward unit.The generalised Gondwana sequence is characterised mainly bychannel lags, pebbly massive to crudely cross-stratified sandstone,trough and planar cross-stratified sandstone, ripple laminatedsandstone/siltstone, massive to parallel laminated siltstone, mud-stone/shale and coal in ascending order. The facies associationsrepresent several repeated fining-upward units and cycles, indi-cating various sub-environments (channel, floodplain, flood basin/backswamp) in fluvial regime. The conglomerates might have bendeposited as debris flow or channel lag deposits. The sandstoneswere deposited mainly as multistoried channel and lateral bars inmoderately braided and sinuous streams. The siltstone and mud-stone lithofacies indicate bar top, natural levee or floodplain toflood basin environments. The coal lithofacies suggests depositionin low-lying, short to long persistent, moderately to well drainedand sparse to densely vegetated backswamps in fluvial channel-flood-plain complex. The overall succession of the Gondwana borehole sed-iments sugests that the depositional basin became, with time, gentlerin slope gradient, resulting in a more sinuous stream setting. | 지질학 | null | kci_detailed_000236.xml | |||
ART000897062 | oai_dc | Co-seismic spring flow changes attributed to the March 29, 1999 Chamoli earthquake of Garhwal Himalaya | Co-seismic spring flow changes attributed to the March 29, 1999 Chamoli earthquake of Garhwal Himalaya | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Irene Sarkar(Indian Institute of Technology); Ramesh Chander(Indian Institute of Technology)"
] | The moderate magnitude Chamoli earthquake thatoccurred on March 29, 1999, in the Garhwal Higher Himalayaproduced, among many other observable effects, changes in flowof several artisan springs. Qualitative observations of significantchanges in the flow of ten springs located in regions of higherintensity show a strong spatial correlation with our preliminaryestimates of perturbing pore pressure field induced in the watersaturated shallow rocks of the region by the earthquake in its coseis-mic phase. The results are significant for it is the first successfulattempt in the Himalayan region to investigate the response patternof the local groundwater flow system to perturbations induced tothe ambient tectonic stress regime by a major earthquake. | 지질학 | null | kci_detailed_000236.xml | |||
ART000999747 | oai_dc | Characterization of tourmaline crystals by Rietveld and single-crystal structure refinement: A comparative study | Characterization of tourmaline crystals by Rietveld and single-crystal structure refinement: A comparative study | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"최진범(경상대학교); Frank Christopher Hawthorne(University of Manitoba)"
] | The crystal structures of an elbaite, Na0.591Ca0.18(Al1.395Fe0.007Mn 0.390Li1.208)Al6(Si5.986Al0.014)O18(BO3)(OH)4, a=15.866(2),c=7.113(1) , V=1550.4(6) 3, R3m, Z=3, and a schorl, Na0.659Ca0.081(Al0.245Fe1.680Mn 0.013Ti0.078Mg 0.860Li0.122)Al6(Si5.901Al0.09)O18(BO3)(OH)4,a=15.985(2), c=7.178(1) , V=1588.4(6) 3, R3m, Z=3, have beenrefined by single-crystal and Rietveld methods to R indices of 2.0/5.9 and 1.7/6.5%, respectively. Half-normal probability analysis ofthe two sets of results shows that the Rietveld method producessite-scattering values and atomic positions that are accurate. Thisindicates that the Rietveld method should be a useful technique forthe characterization of run products in tourmaline-synthesis experi-ments as well as synthetic ones having complicated crystal struc-tures. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128315 | oai_dc | Rb-Sr isotopic study of the Hwacheon granite in northern Gyeonggi massif, Korea: A case of spurious Rb-Sr whole rock age | Rb-Sr isotopic study of the Hwacheon granite in northern Gyeonggi massif, Korea: A case of spurious Rb-Sr whole rock age | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"S.-T. Kwon(Yonsei University); C.- S. Cheong(Korea Basic Science Institute); H. Sagong(Korea Environment Institute)"
] | Sagong, H., Kwon, S.-T., and Ree, J.-H., 2005, Mesozoic episodicmagmatism in South Korea and its tectonic implication. Tecton-ics, 24, TC5002, doi:10.1029. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128361 | oai_dc | Characteristics of ground and groundwater temperatures in a metropolitan city, Korea: considerations for geothermal heat pumps | Characteristics of ground and groundwater temperatures in a metropolitan city, Korea: considerations for geothermal heat pumps | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jin-Yong Lee(GeoGreen21 Co., Ltd.)"
] | As a basic feasibility study for geothermal heatpumps, characteristics of ground and groundwater temperatures ina metropolitan city, Seoul, were examined. For the purpose, ground-water data obtained from the subsidiary groundwater monitoringwells of the city and data of ground temperatures at depths of 0.05-5.0 m were analyzed. The annual ground temperature variationsdecreased exponentially with ground depths and the coing phase differences compared with the ambient air temperaturesincreased linearly with them. The ground temperatures were very | 지질학 | null | kci_detailed_000236.xml | |||
ART001017100 | oai_dc | Constitutive equations for saturated hydraulic properties of deforming porous geologic media with compressible solid constituents | Constitutive equations for saturated hydraulic properties of deforming porous geologic media with compressible solid constituents | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jun-Mo Kim(서울대학교)"
] | A series of constitutive equations is presented toevaluate the changes in the saturated hydraulic properties (i.e.,porosity and saturated hydraulic conductivity) which result fromthe mechanical deformation of porous geologic media. The con-stitutive equation for the deformation-dependent porosity isderived from the relationship between the porosity and the volu-metric strain considering both solid skeleton and solid constituent(solid grain) to be compresible while the latter is les compress-ible. The constitutive equation for the deformation-dependent sat-urated hydraulic conductivity is then obtained by substituting theconstitutive equation for the deformation-dependent porosity intothe Kozeny-Carman equation assuming that the mechanicaldeformation of porous geologic media does not alter the shape ofthe pores since the individual solid grains are relatively incom-pressible compared with the solid skeleton. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128360 | oai_dc | ‘Singwang strike-slip duplex’ around the Pohang Basin, SE Korea: its structural evolution and role in opening and fill of the Miocene basin | ‘Singwang strike-slip duplex’ around the Pohang Basin, SE Korea: its structural evolution and role in opening and fill of the Miocene basin | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"최범영(한국지질자원연구원)"
] | In order to elucidate the structural characteristics ofthe Yangsan Fault in southeastern Korea the Ganggu-Angangarea has been studied in terms of fault branching and fault link-ages. According to the results of this study, eight faults (e.g., theWinmal, Docheon, Yugye, Gojusan, Naengsu, Malgol, Ogeum andMoa faults) branch from the Yangsan Fault, and divide it into atleast nine segments. The strike separations of these faults suggestthat they are much longer than their presently exposed lengthsand that the majority of them are linked to the Jangsa Fault asconnecting faults. This distribution of faults comprises the ‘Sing-wang strike-slip duplex’ with the geometry of an extensional strike-slip duplex or pull-apart basin. Block faulting took place along theconnecting faults and related transfer faults, resulting in the dep-osition of coarse grained sediments in fan-delta systems. The shapeof basalt masses around the northern tip of Yangsan Fault revealsthat this fault had a sinistral motion, posibly in relation to thethe Yangsan Fault was displaced by WNW-ESE, E-W or ENE-WSWtrending faults. Quaternary reactivation occurred along the YangsanFault but not along the Jangsa Fault. | 지질학 | null | kci_detailed_000236.xml | |||
ART001017102 | oai_dc | The offshore Uljin, Korea, earthquake sequence of April 2006: seismogenesis in the western margin of the Ulleung Basin | The offshore Uljin, Korea, earthquake sequence of April 2006: seismogenesis in the western margin of the Ulleung Basin | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"강태섭(한국지질자원연구원); 신진수(한국지질자원연구원)"
] | An unusual earthquake sequence comprising 11events with magnitude range of ML 2.0 to 3.2 ocurred of the east-ern coast of the southern Korean Peninsula in April 2006. Sincethere is no obvious mainshock in this sequence unlike a typicalmainshock-aftershock sequence, the seismicity patern shows thecharacteristics of swarm behavior. Focal mechanism of the largestevent (ML 3.2) on Hypocenter relocations of nine events improve the epicenter loca-tions that fal within an area with a radius of about 0.7 km whiledepths are les well constrained with ranges of 1.6 km to 13.0 km.We propose that a swarm behavior of the sequence is closelyrelated to the marginal geometry of the Ulleung Basin and theregional stress regime. The fact that epicenters of the April 2006sequence are at the same transitional zone of continental to riftedcontinental crust as that of the 29 May 2004, Mw 5.1, earthquakeindicates that the Uleung Fault is seismically active. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128314 | oai_dc | Sorption properties of 152Eu and 241Am in geological materials: Eu as an analogue for monitoring the Am behaviour in heterogeneous geological environments | Sorption properties of 152Eu and 241Am in geological materials: Eu as an analogue for monitoring the Am behaviour in heterogeneous geological environments | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Seung-Gu Lee(Korea Institute of Geoscience and Mineral Resources); Kil Yong Lee(Korea Institute of Geoscience and Mineral Resources); Soo Young Cho(Korea Institute of Geoscience and Mineral Resources); Yoon Yeol Yoon(Korea Institute of Geoscience and Mineral Resources); Yongje Kim(Korea Institute of Geoscience and... | In order to confirm the similar behavior of Eu andAm in heterogeneous geological materials, we carried out thebatch experiments for determining the sorption property of radi-onuclides, 152Eu and 241Am. We used four different types of coreand andestic tuff, and selected two samples per each lithology, oneof which is fracture-bearing and another is fracture-free. Except formetabasites, rock samples of each type are similar in their compo-sitions. We calculated sorption ratios of two radionuclides from theexperimental results. Biotite gneiss and tuff had similar sorptiontrends for 152Eu and 241Am regardless of the existence of fractures,whereas two metabasite samples showed very different sorptionproperties. Such difference in the sorption trends revealed a closerelationship with chemical compositions of the host rocks. Never-theless, 152Eu and 241samples with variable contact times regardless of petrography andpH variations, and particularly, the sorption trends of 152Eu and241Am in the metabasites were similar. This observation sugeststhat Eu and Am have similar sorption properties on geologicalmaterials. Therefore, Eu can be used as a useful analogue of Amin all kinds of geological environments regardless of variations inlithology and pH of groundwater. In addition, sorption ratios of152Eu and 241Am are correlated with the contents of P2O5 and TiO2,suggesting that the chemical components such as P2O5 and TiO2might be important for deciphering the interaction betwen theradionuclide and groundwater. | 지질학 | null | kci_detailed_000236.xml | |||
ART001016964 | oai_dc | Two-point ray tracing in dipping layered media with constant or linearly varying velocity function | Two-point ray tracing in dipping layered media with constant or linearly varying velocity function | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Woohan Kim(GyeongSang National University); Jongchan Park(Korea Meteorological Administration); Chang-Eob Baag(서울대학교)"
] | A stable and accurate computational method isintroduced for two-point ray tracing in the dipping layered mediawith constant or linearly varying vertical velocity distributions.This method is similar to the method introduced by Kim and Baag(2002) in horizontally layered media except that the slowness of aray through whole ray path does not conserve due to dipping lay-ers. The take-off angle at the source can be determined by the two-with respect to the horizontal distance between source and receiver.An equation of the horizontal distance can be obtained from theequations of ray paths and of interfaces in a nonlinear form. Thisnonlinear equation is expanded in a Taylor series with terms up tothe second order about initial take-off angle of the ray for two-pointray tracing. This expansion yields the quadratic equation with respectto correction angle, which is the angular difference between thetrue and calculated take-off angle at the source. In this study, theinitial take-off angle is basically estimated by applying the methodintroduced by Kim and Bag (2 002). show stable and accurate two-point ray tracing for several modelswhich include low velocity layer and producing triplication (or more)zone. Therefore, the accuracy and convergence rate of this methodare sufficient enough to apply the method to a wide varieties ofseismic problems. | 지질학 | null | kci_detailed_000236.xml | |||
ART001017101 | oai_dc | Tracer transport test in simple fractured media | Tracer transport test in simple fractured media | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jeongkon Kim(Korea Water Resources Corporation); Andrew Duguid(Princeton University); Franklin W. Schwartz(The Ohio State University)"
] | Scientific visualization is an important method forunderstanding complex hydrologic processes. A series of experi-ments was conducted using two-dimensional fracture networksbuilt of transparent plexiglass blocks as a new approach to processvisualization. A digital monitoring method was used to visualizetransport of a tracer in the fracture networks. The approach forvisualizing tracer transport in fractured networks provided bothducted it was found that tracer spreading in fractured media wascomplex even in simple networks consisting of equally spacedfinite fractures. The combined effects of fracture orientation andaperture variability resulted in the complex tracer spreading. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128457 | oai_dc | New model for the Early Cretaceous development of SW Japan based on basic rocks of the Chichibu Composite Terrane | New model for the Early Cretaceous development of SW Japan based on basic rocks of the Chichibu Composite Terrane | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Kiyoshi Kato(Waseda University); Yukiyasu Saka(Waseda University)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001128456 | oai_dc | Thermal history of the Cretaceous Pungam and Yeongdong basins, Korea based on Apatite and Zircon Fission Track analysis | Thermal history of the Cretaceous Pungam and Yeongdong basins, Korea based on Apatite and Zircon Fission Track analysis | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Taejin Choi(서울대학교); Yong Il Lee(서울대학교)"
] | Apatite and zircon fision track (FT) analyses werecarried out to reconstruct the thermal histories of the CretaceousPungam and Yeongdong basins, Korea. These basins were formedalong the sinistral strike-slip faults in the Early Cretaceous andwere compressed in the Late Cretaceous by transpressional stressesdue to the change in subduction direction of the Kula/Pacific Plate.sistent FT ages of ca. 50 Ma and ca. 63 Ma, respectively, muchyounger than their stratigraphic ages. In contrast, the zircon FTages of both basins show relatively wide ranges, i.e., from 89 to70 Ma in the Pungam Basin, and from 83 to 64 Ma in the Yeo-ngdong Basin. Zircon single-grain age spectra also show multipleage populations. Co-existence of both the older and younger FTages in comparison to the depositional age (Pungam Basin: ~70Ma, Yeongdong Basin: ~100 Ma) indicates that the zircon samplesfrom both basins were partially annealed. The Pungam Basin wasvolcanic activity and associated hydrothermal fluid, then cooledbelow the apatite closure temperature at ca. 50 Ma. The Yeong-dong Basin was also heated into the ZPAZ after deposition byburial and volcanic activity, then cooled down below the apatiteclosure temperature at ca. 63 Ma, and was uplifted to the presentsurface. Comparing these data with those of the GyeongsangBasin, the response to transpressional stresses seems not to be con-trolled by the distance of the basin from the active continentalmargin. Further studies are needed to clarify such tectonic inver-sion of the sedimentary basins in the active continental margin. | 지질학 | null | kci_detailed_000236.xml | |||
ART001031875 | oai_dc | Radiolarians, bivalves and the J/K boundary in the Birafu Formation, southern Kurosegawa Belt, Central Shikoku, SW Japan | Radiolarians, bivalves and the J/K boundary in the Birafu Formation, southern Kurosegawa Belt, Central Shikoku, SW Japan | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Takeshi Kozai(Naruto University of Education); Keisuke Ishida(University of Tokushima); Yasuo Kondo(Kochi University)"
] | The OxfordianBerriasian Birafu Formation in thesouthern Kurosegawa Belt (Permian accretion terrane), CentralShikoku, SW Japan, yields micro- and mega-faunas that contrib-ute to the biostratigraphy across the Jurassic-Cretaceous bound-ary. The type section consists of turbiditic sandstone and mudstonewith an upward-fining tendency in the lower members (A1-A3).with muddy limestone intercalations, whereas the upper memberC is characterized by a fine-grained turbiditic succession. Radi-olarians define the assemblage zones (AZ): Kilinora spiralis AZ(Oxfordian) in member A2, Loopus primitivus AZ (Tithonian) inthe upper part of member A3, and Pseudodictyomitra carpatica AZ(Berriasian - lower Valanginian) in members B2 and C. These giveat least an Oxfordian - Berriasian total time-range to the BirafuFormation. The mixed marine and brackish bivalve assemblage ofmembers B1 and B2 (lower part) comprises Grammatodon takien-sis Tamura, Pterotrigonia toyamai (Yehara) and Ctenoides tosanusKimura, the range of which is Late Jurassic to Earliest Creta-ceous, and Aguilerella nagatoensis (Ohta), Miltha japonica Tashiroand Isocyprina japonica Tashiro and Kozai, having an Early Cre-taceous range. The concurent range of Jurassic to Cretaceousbivalves and exclusively Cretaceous species is significant for theclarification of bivalve evolution across the Jurassic -Cretaceousboundary. The Berriasian appearance of Cretaceous marine andnon-marine bivalves takes place while Late Jurassic marine bivalvesboundary situated at its base. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128504 | oai_dc | A Cretaceous supra-subduction oceanic basin source for Central Philippine ophiolitic basement complexes: Geological and geophysical constraints | A Cretaceous supra-subduction oceanic basin source for Central Philippine ophiolitic basement complexes: Geological and geophysical constraints | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"C.B. Dimalanta(University of the Philippines); L.O. Suerte(University of the Philippines); G.P. Yumul Jr.(University of the Philippines); R.A. Tamayo Jr.(University of the Philippines); E.G.L. Ramos(University of the Philippines)"
] | The Central Philippines is made up of several Cre-taceous oceanic lithospheres that were generated and emplaced ina variety of geologic setting and manner. The Antique OphioliteComplex exposed along the western side of Central Philippines isassociated with blueschists, which sugests tectonic erosion accom-panied subduction during its emplacement. Mlanges are associ-ophiolitic rocks suggesting that subduction kneading was a majorprocess during the emplacement of these oceanic fragments. Thegeology and geochemistry of the Tacloban Ophiolite Complex inNorthern Leyte, the Malitbog Ophiolite Complex in Southern Leyteand the dismembered ophiolitic sequence in southern Samar implythat subduction played a role in the generation and emplacementof these Cretaceous oceanic lithospheres. Whole rock major andtrace element, along with spinel mineral chemistry, favor a supra-subduction zone origin for these ophiolites. The ophiolites becomeyounger towards the east (present-day geographic setting) indicat-similarities in the petrologic features, geochemical signatures andages displayed by these oceanic lithosphere fragments in CentralPhilippines indicate that they were probably derived from a singleCretaceous oceanic basin which could have been a part of theproto-Philippine Sea Plate. | 지질학 | null | kci_detailed_000236.xml | |||
ART001033499 | oai_dc | Role of oysters in biostratigraphy: A case study from the Cretaceous of the Ariyalur area, southern India | Role of oysters in biostratigraphy: A case study from the Cretaceous of the Ariyalur area, southern India | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Krishnan Ayyasami(Geological Survey of India)"
] | The Cretaceous sediments of the Ariyalur area,southern India, are the largest and the most important of allthe exposures of that system in southern India. Oyster bivalvesare common in these Cretaceous sediments. More than twentyspecies belonging to fifteen genera are known from the Ariyalurresenting ages ranging from Late Albian to Maastrichtian. Theabundance, preservation and restricted ranges of these bivalvespecies in the Cretaceous of Ariyalur area ofer scope for bio-zonation. They seem to play a role as markers of sedimentaryunits by their apparent accumulation. This study attempts tointerpret the palaeoenvironment of deposition based on size,distribution and carbon isotope study of the shells, the petrol-ogy of the associated rocks and inferences based on othergroups of fossils including invertebrates, vertebrates and plantfossils. | 지질학 | null | kci_detailed_000236.xml | |||
ART001195766 | oai_dc | New Maastrichtian oxygen and carbon isotope record: Additional evidence for warm low latitudes | New Maastrichtian oxygen and carbon isotope record: Additional evidence for warm low latitudes | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Yuri D. Zakharov(Russian Academy of Sciences); Alexander M. Popov(Russian Academy of Sciences); Yasunari Shigeta(National Science Museum); Olga P. Smyshlyaeva(Russian Academy of Sciences); Ekaterina A. Sokolova(Russian Academy of Sciences); Ragavendra Nagendra(Anna University); Tatiana A. Velivetskaya(Russian Acad... | The Cretaceous period was generally characterizedby greenhouse conditions. Nevertheless, our data on isotopic com-position of biogenic carbonates from the Koryak Upland andSakhalin (Russian Far East) show that during the Maastrichtian,temperatures dropped sharply at high and middle latitudes, withonly a slight warming in the early Late Maastrichtian. At the sametime, there is contradictory evidence on climatic conditions for lowlatitude areas during Maastrichtian time. The new and previouslypublished isotopic data on Maastrichtian molusks in the WesternInterior Seaway (North America) (WIS) and some other areas sug-gest that tropical deep-sea surface temperatures calculated from theoxygen isotopic composition of the majority of investigated Maas-trichtian planktic foraminifera are, obviously, underestimated. Unusu-aly low isotopic temperatures were obtained for tropical plankticforaminifera. This probably reflects both local conditions provoked,first of all, by the influence of tropical upwelling zones, and the abil-ity of Maastrichtian planktic foraminifera to migrate within a largevertical interval in the tropical zone in conditions of weakly strati-fied (well-mixed) ocean. The average tropical deep-sea surface pale-otemperature estimates for the Maastrichtian could have beenabout 26.630.2°C, but, apparently, did not reach the level denotedfor the Late Albian and Turonian (32±3°C). Negative carbon-iso-topic shifts at the end of the early Maastrichtian and the Creta-ceous-Tertiary boundary time seem to be conected with the fall oftemperature and eventual reduction of oxygen content in theatmosphere and hydrosphere. | 지질학 | null | kci_detailed_000236.xml | |||
ART001033500 | oai_dc | Volcanic-hypabyssal rock geochemistry of a subduction-related marginal basin ophiolite: Southeast Bohol Ophiolite-Cansiwang M？ange Complex, Central Philippines | Volcanic-hypabyssal rock geochemistry of a subduction-related marginal basin ophiolite: Southeast Bohol Ophiolite-Cansiwang M？ange Complex, Central Philippines | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"D.V. Faustino(University of the Philippines); G.P. Yumul, Jr.(University of the Philippines); C.B. Dimalanta(University of the Philippines); J.V. de Jesus(University of the Philippines); M-F. Zhou(University of Hong Kong); J.C. Aitchison(University of Hong Kong); R.A. Tamayo, Jr.(University of the Philippines)"
] | The Early Cretaceous Southeast Bohol Ophiolite-Cansiwang Mlange Complex and the Alicia Schist form thebasement of southeastern Bohol Island in central Philippines.New geochemical data show that four discrete groups consti-tute the volcanic and associated hypabyssal rocks of the ophi-olite-mlange complex: boninitic rocks (BON), enriched andnormal mid-ocean ridge basalt-like rocks (E-MORB; N-MORB) and high-magnesian andesites (HMA). Of these fourgroups, the BON are the most depleted in REEs and with themost pronounced negative Nb anomalies. Both MORB-liketypes exhibit subduction-zone influence as reflected in theirslight negative Nb anomalies. Characteristically with flat andLREE-depleted patterns, the HMA samples apear to mimicN-MORB patterns but with lower REE concentrations. Thisgeochemical diversity is best explained by a suprasubductionzone environment of formation as is also evident from field geo-believed to have ben concurrent with the ophiolite’s emplace-ment by subduction-accretion along a forearc margin. This tec-tonic boundary was later jammed into inactivity with the entryof the Alicia Schist that most likely was an oceanic bathymetrichigh. The intercalation of both tufaceous materials and pelagicchert with the pillow basalts are consistent with a marginalbasin tectonic setting. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128410 | oai_dc | Faunal affinity of Toarcian-Aalenian (Early Jurassic) bivalves from Mae Sot and Umphang (Tak Province), Northwestern Thailand | Faunal affinity of Toarcian-Aalenian (Early Jurassic) bivalves from Mae Sot and Umphang (Tak Province), Northwestern Thailand | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Takeshi Kozai(Naruto University of Education); Francis Hirsch(Naruto University of Education); Keisuke Ishida(University of Tokushima); Assanee Meesook(Department of Mineral Resources)"
] | In the Mae Sot and Umphang areas (NW Thailand),Jurassic strata seal the Permian and Triassic substratum of theShan-Thai terrane with a brecciated conglomerate. Pliensbachianto Early Bajocian shallow marine strata are intercalated withinthe partly terrestrial Jurassic sequence. Thirty-five Toarcian-Aale-nian bivalve species from Mae Sot and Umphang were identified.Among these, Eomiodon chumphonensis Hayami is known onlyfrom Thailand, whereas Parvamusium donaiense (Mansuy), Myo-phoriella saurini Hayami, Thracia loducensis Hayami, Pholadomya(Bucardiomya) fontainei Hayami, Thracia loducensis Hayami andModiolus sestiniae Hayami were originally described in Vietnam.M. sestiniae also occurs in Iran. The greater part of the fauna,however, shows varying degrees of affinity with Myanmar (6 spe-apan (13 species) and Europe (9 species),Levant (2 species). In view of these, it appears that these highlyendemic Toarcian-Aalenian bivalves from Thailand characterizethe Southeastern Asian Province of Tethys. | 지질학 | null | kci_detailed_000236.xml | |||
ART001033390 | oai_dc | New micropalaeontological evidence for a Late Triassic Shan-Thai orogeny | New micropalaeontological evidence for a Late Triassic Shan-Thai orogeny | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Keisuke Ishida(University of Tokushima); Ariko Nanba(University of Tokushima); Francis Hirsch(Naruto University of Education); Takeshi Kozai(Naruto University of Education); Assanee Meesook(Department of Mineral Resources)"
] | The Shan-Thai block is viewed as a remnant of Pale-otethys in South East Asia. The general consensus about its originis that it happened through the rifting from Gondwanaland andfinal amalgamation to Eurasia, sealed by fluvialshallow marineJurassic deposits. As the main Paleotethyan closure, the NanUttara-dit/NanChantaburi and BentongRaub sutures were proposedby other workers. However, a suture further west, flanked by theGondwanaTethys divide (GTD), is advocated here as the mainPaleotethyan closure. The Midle and Late Triassic radiolarianfaunas were extracted from a chert-sequence in the Mae-Sot andUmphang areas of NW Thailand. The radiolarian faunas indicateearly Ladinian, earlymiddle Norian, and NorianRhaetian, indi-vidually. The Triassic chert-sequence is overlain by the ‘Jurassicbase-conglomerate’. The limestone and chert clasts in the conglom-erate yield EarlyLate Triassic conodonts and MiddleLate Tri-assic radiolarians, respectively. Chert clasts in the conglomerateyield among others NorianRhaetian radiolarians that are correl-Late Triassic conodonts arefound in limestone clasts. The silici-pelagic origin of the clasts sug-gests the presence of an ocean before the end-Triassic orogenyalong the Mae Sariang Zone that amalgamated the parts of theShan-Thai block. This first finding of Late Triassic radiolariansfrom chert-sequence, next to the Middle Triassic and older radi-olarian faunas, adds another element to the reconstruction of thesequence now comprised in the Mae Sariang Zone, west of theNanUttaradit Suture. The occurrence of Triassic limestone, as thatof the Chaiburi Formation in the Mae Sariang Zone, or the Kodi-ang Limestone in the “Western Zone”, may elucidate the questionclasts in the Jurassic base-conglomerate that seals the MaeSari-ang Zone. The newly dated Triassic sequence is further sealed bythe continental-shelf deposits of the Toarcian-early Bajocian HuaFai Group. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128411 | oai_dc | Structural and provenance analyses of a newly defined major fault: the Homyeong Fault as a northern boundary fault of the Cretaceous Nagdong Trough, South Korea | Structural and provenance analyses of a newly defined major fault: the Homyeong Fault as a northern boundary fault of the Cretaceous Nagdong Trough, South Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Kosuke Egawa(Kangwon National University); Daekyo Cheong(Kangwon National University); Shigeru Otoh(University of Toyama)"
] | The Homyeong Fault on the Yecheon Shear Zone isnewly defined and described in the northwestern part of NorthGyeongsang Province, South Korea. In the study area, the base-ment rocks consist of the Precambrian rocks and Jurassic granitoid,and are dextrally deformed by the Jurassic Yecheon Shear Zone tothe north of the Cretaceous Gyeongsang Supergroup in a ductilethe Sindong Group, the lowest part of the Gyeongsang Supergroup.The Homyeong Fault runs on the Yecheon Shear Zone, and ismarked by cataclasite that contains mylonite fragments originatingfrom the mylonitic rocks of the Yecheon Shear Zone and that showssinistral sense of shear with normal-fault component dipping bas-inward, which indicates reactivation of the Yecheon Shear Zone.The conglomerates of the northern part of the Sindong Group usuallycontain the gravels of granite, quartzite, blackish quartzite, mylo-nite, ultramylonite, and mudstone. Petrological similarity betweenthese gravels and the basement rocks sugests that most of theits vicinity. Considering the Korean Cretaceous basins mostlyformed by sinistral reactivation of the pre-existing shear zones, itcan be judged that the reactivation of the Yecheon Shear Zonecaused the basement rocks nearby the Homyeong Fault, or theYecheon Shear Zone and its vicinity, to be deposited as the gravelsto the Nagdong Trough where the Sindong Group was filled on thesouth of the fault. This gives new proposals that the HomyeongFault had played a role as a northern boundary fault of the NagdongTrough and also that the inversion tectonics from Jurassic dextral toCretaceous sinistral motions, observed in the eastern margin of Asia,had an effect on the formation of the Nagdong Trough. | 지질학 | null | kci_detailed_000236.xml | |||
ART001033498 | oai_dc | The welding of Shan-Thai | The welding of Shan-Thai | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Francis Hirsch(Naruto University of Education); Keisuke Ishida(University of Tokushima); Takeshi Kozai(Naruto University of Education); Assanee Meesook(Department of Mineral Resources)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001032086 | oai_dc | Relationship between δ13C and δ18O values of the Recent Nautilus and brachiopod shells in the wild and the problem of reconstruction of fossil cephalopod habitat | Relationship between δ13C and δ18O values of the Recent Nautilus and brachiopod shells in the wild and the problem of reconstruction of fossil cephalopod habitat | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Yuri D. Zakharov(Russian Academy of Sciences); Yasunari Shigeta(National Science Museum); Olga P. Smyshlyaeva(Russian Academy of Sciences); Alexander M. Popov(Russian Academy of Sciences); Alexander V. Ignatiev(Russian Academy of Sciences)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001033389 | oai_dc | Land-ocean interaction of carbon cycle and bio-diversity change during the Cretaceous in Asia | Land-ocean interaction of carbon cycle and bio-diversity change during the Cretaceous in Asia | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Graciano P. Yumul, Jr.(National Institute of Geological Sciences); Hiromichi Hirano(Waseda University); Yong Il Lee(서울대학교)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001128550 | oai_dc | Magmatic and amagmatic contributions to crustal growth in the Philippine island arc system: Comparison of the Cretaceous and post-Cretaceous periods | Magmatic and amagmatic contributions to crustal growth in the Philippine island arc system: Comparison of the Cretaceous and post-Cretaceous periods | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Carla B. Dimalanta(University of the Philippines); Graciano P. Yumul, Jr.(University of the Philippines)"
] | Volume, p. 35.Yumul, G.P. Jr., Dimalanta, C.B., Tamayo, R.A.Jr. and Bellon, H.,2003b, Silicic arc volcanism in Central Luzon, Philippines: Char-acterization of its space, time and geochemical relationship. TheIsland Arc, 12, 207218.Yumul, G.P.Jr., Dimalanta, C.B., Tamayo, R.A.Jr. and Maury, R.C.,2003c, Collision, subduction and accretion events in the Philip-pines: A synthesis. The Island Arc, 12, 7791. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128311 | oai_dc | Compositional variation of Fe-Ti oxides from the Sokli complex, northeastern Finland | Compositional variation of Fe-Ti oxides from the Sokli complex, northeastern Finland | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Mi Jung Lee(한국해양연구원); Jaques Moutte(GENERIC, Centre SPIN, Ecole des Mines); Jong Ik Lee(한국해양연구원)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001128358 | oai_dc | Evaluation of Hydrogeological Characteristics in Jeju Island, Korea | Evaluation of Hydrogeological Characteristics in Jeju Island, Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jong-Ho Won(한국수자원공사); Ji-Wook Kim(한국수자원공사); Gi-Won Koh(제주도청 광역수자원관리본부); Jin-Yong Lee(지오그린21)"
] | Jeju Island is a volcanic one composed predominantly of permeable basalts. The water resources of the island are dependent almost entirely on groundwater. It is essential to fully understand the hydrogeological conditions of the aquifer systems for proper and sustainable development of groundwater resources. Groundwater characteristics, including water levels and aquifer parameters in the island were evaluated using extensively collected hydrogeologic data. Groundwater levels on the island were located in a range between 26 and 282 m above sea level. Groundwater levels in the northern and southern basins are generally higher than those in the eastern and western basins. Fluctuation patterns of groundwater levels and ECs were classified into three types: sinusoidal fluctuations of both water level and EC, sinusoidal fluctuation of water level only, and no distinct fluctuation pattern. Generally, there were higher groundwater yields in coastal areas than inland areas. The groundwater was most productive in the trachybasalts and basal groundwater areas. This paper is providing a summary of several investigations on the hydrogeological characteristics of the aquifers in the island. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128312 | oai_dc | Time series modeling for evaluation of groundwater discharge rates into an urban subway system | Time series modeling for evaluation of groundwater discharge rates into an urban subway system | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"김성준(삼성엔지니어링); 현윤정(서울대학교); 이강근(서울대학교)"
] | This study investigates the application of time series analysis for evaluating groundwater discharge rates into a subway system in Seoul, Korea. A time series of daily precipitation and groundwater discharge rates observed at three subway stations Gireum, Garibong and Sadang stationin 2001 were used for the time series modeling. Correlation analyses show that groundwater discharge rates are auto-correlated and correlated with precipitation. Based on these correlation analyses, the transfer function noise (TFN) models including the Box-Jenkins (BJ) autoregressive moving average (ARMA) model were applied to evaluate the groundwater discharge rates into a subway tunnel when precipitation data is given. As a result, the TFN model is acceptable at all three stations. Though the analyses are limited to regularly observed time series data and a linear groundwater system, this study provides a practical application of time series models for groundwater discharge management in the subway system. In particular, for the Seoul subway system where the rapid deterioration of water resources occurs, the estimation of groundwater discharge rates is very important for an efficient management of the water resources in the urban environment. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128408 | oai_dc | Application and cross-validation of spatial logistic multiple regression for landslide susceptibility analysis | Application and cross-validation of spatial logistic multiple regression for landslide susceptibility analysis | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"이사로(한국지질자원연구원)"
] | The aim of this study is to apply and cross-validate a spatial logistic multiple-regression model at Boeun, Korea using a Geographic Information System (GIS). For this landslide locations in the Boeun area were identified by interpretation of aerial photographs and field surveys. Maps of the topography, soil type, forest cover, geology and land cover were constructed from a spatial database. The 13 factors that influence landslide occurrence were calculated and extracted from the spatial database. Using the 13 factors, landslide susceptibility was analyzed by logistic multiple-regression methods. For validation and cross-validation, the result of the landslide susceptibility analysis obtained from Boeun area was applied to Yongin area in Korea. The validation and cross-validation results showed 75.0% and 85.3% prediction accuracy between the susceptibility map and the existing landslide locations. The GIS was used to analyze the vast amount of data efficiently and statistical programs were used to maintain specificity and accuracy. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128407 | oai_dc | Competitive adsorption of heavy metals and uranium on soil constituents and microorganism | Competitive adsorption of heavy metals and uranium on soil constituents and microorganism | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"최재영(한국과학기술연구원); 박재우(한양대학교)"
] | Measurements were made of the adsorption of lead, cadmium, zinc, nickel and uranium per unit surface area of microorganisms, two clays (reference smectite, kaolinite), and two soils (untreated Vertisol and treated Vertisol) to quantify the selective affinity. The adsorption of heavy metals and uranium by the samples was influenced by soil constituents, and increased with increasing Pb, Ni, Zn, Cd and U concentrations. Microorganisms were also compared with these abiotic soil constituents for their ability to adsorb these metals. Dead cells adsorbed the largest quantity of all heavy metals than live cells and other soil components. At pH 6.0, the uptake percentage of U(VI) by dead cells was higher than that of any of the other metal ions. On the basis of amounts of adsorption on adsorbents, the selectivity sequences were varied. The most common sequences were U>>Pb>CdZn>Ni. The results verified the importance of geochemical parameters of soils such as type of clay mineral, oxide mineral content, and organic content, for controlling metal uptake. The results also suggest that bacterial membrane cells can be successfully used in the treatment of mixed metal-contaminated wastes. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128313 | oai_dc | Optimal groundwater remediation design of a pump and treat system considering clean-up time | Optimal groundwater remediation design of a pump and treat system considering clean-up time | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"고낙열(서울대학교); 이강근(서울대학교); 현윤정(한국환경정책·평가연구원)"
] | This study presents the optimal groundwater remediation design using a pump and treat method by optimizing the clean-up time, which is a critical factor to determine an optimal remediation design in practical applications. In this study, a simulation-optimization approach was used to determine an optimal remediation design. For a simulation-optimization approach, MODFLOW and MT3D models were used for simulating groundwater flow and mass transport, and the genetic algorithm (GA) was applied for optimizing the number and locations of pumping wells for applications of the pump and treat methods. The optimal remediation design was determined by using two objective functions: minimizing the total pumping rate and total pumping volume with optimizing clean-up time, respectively. Results revealed that major pumping wells were mainly located on the centerline at down-gradient of regional flow regardless of the objective functions. However, the number and locations of optimal pumping wells varied with time and unnecessarily excessive pumping occurred when clean-up time was treated as a fixed constraint. Therefore, it is concluded that clean-up time must be optimized by considering it as a decision variable in order to design the optimal pump and treat system. The sensitivity analysis showed that there is an appropriate range of hydraulic conductivity for the practical and effective pump and treat remediation design. However, this sensitivity analysis is very limited and model-specific. Thus, the sensitivity of a remediation design to other hydraulic parameters, boundary and initial conditions, and contaminant concentrations should be further investigated. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128359 | oai_dc | Influence of Weathering Depth and Fracture Intensity to Cut Slope Movement | Influence of Weathering Depth and Fracture Intensity to Cut Slope Movement | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Uijin Jeong(서울대학교); Woon Sang Yoon(넥스지오); Jai Won Choi(넥스지오); Jeong Hwan Kim(서울대학교)"
] | : Various types of slope failure with different ground conditions were analyzed by detailed field investigation of 373 road-cuts along the national highways of Korea. The ground conditions, which are related to failure types and their triggering factors, are strongly dependent upon the weathering or soil depth and fracture intensity in cut slopes. We propose the soil depth ratio (SR) and block size ratio (BR) to define the ground conditions of the cut slopes and to evaluate their instability. SR, which is related to weathering conditions of the ground, is defined as the ratio of soil depth to that of slope height. When SR is greater than 0.4, sliding failure along discontinuities does not occur. BR is defined as the ratio of the block size index to that of slope height. When BR is less than 0.01, behavior of the rock slope shows characteristics of circular sliding even if SR is less than 0.4. Therefore, the ground conditions in cut slopes can be divided into 4 classes based on SR and BR: jointed rock mass (JRM), highly fractured rock mass (HRM), massive rock mass (MRM) and soil-like mass (SLM). This classification provides useful criteria to assess the instability of cut slope composed of various ground materials, and gives some simple rules about instability modes of the cut slopes. | 지질학 | null | kci_detailed_000236.xml | |||
ART001284397 | oai_dc | Taxonomic Revisions of Upper Cambrian Granatodontus Chen et Gong, 1986 of the Dasytodus Lineage (Conodonta) | Taxonomic Revisions of Upper Cambrian Granatodontus Chen et Gong, 1986 of the Dasytodus Lineage (Conodonta) | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Byung-Su Lee(Chonbuk National University)"
] | The Upper Cambrian conodont taxa of the Dasytodontus Lineage is particularly useful to divide strata near Cambrian-Ordovician boundary. This lineage known only in Korea, China and Australia include many coniform paraconodonts and euconodonts with granulose, spinose or nodose ornaments, comprising Granatodontus Chen et Gong, 1986. The generic and specific concepts of Granatodontus are reviewed herein, with comments on its evolution, paleoecology and geographic distribution. Two new species are erected: Granatodontus asymmetrica sp. nov. and Granatodontus multicorrugata sp. nov. | 지질학 | null | kci_detailed_000236.xml | |||
ART001284406 | oai_dc | A study of preferential flow in heterogeneous media using random walk particle tracking | A study of preferential flow in heterogeneous media using random walk particle tracking | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Chan-Hee Park(Helmholtz Centre for Environmental Research, UFZ); Christof Beyer(Christian Albrechts University of Kiel); Sebastian Bauer(Christian Albrechts University of Kiel); Olaf Kolditz(Helmholtz Centre for Environmental Research, UFZ)"
] | We investigated the onset of preferential flow in heterogeneous porous media using the random walk particle tracking (RWPT) concept. The RWPT model is first used to analyze empirically the required number of particles to achieve accurate concentration distributions in two-dimensional homogeneous media and under uniform flow conditions. The analysis is then extended to randomly heterogeneous systems. By increasing the variance of log-normal hydraulic conductivity fields, the transition between homogeneous and preferential flows is observed. To analyze the degree of preferential flow in the porous media, we provide a diagram that consists of two dimensionless parameters: normalized travel time and distance. All the heterogeneous media synthetically generated show a linear relation in the diagram. The characteristic travel velocity increases with increasing heterogeneity. We found the diagram is a useful tool to analyze preferential flow. | 지질학 | null | kci_detailed_000236.xml | |||
ART001284400 | oai_dc | Sediment transport processes over a sand bank in macrotidal Garolim Bay, west coast of Korea | Sediment transport processes over a sand bank in macrotidal Garolim Bay, west coast of Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"조형래(Andong National University); 이희준(Korea Ocean Research and Development Institute)"
] | A sand bank at the mouth of macrotidal Garolim Bay, west coast of Korea is investigated by means of morphological surveys and current measurements for unraveling sediment transport processes relevant to its formation and maintenance. Bedload transport rates calculated from current data show that mutually evasive tidal currents flowing obliquely to the bank through surrounding channels play a principal role on sediment transport over the sand bank. Flood-oriented bedload transport is dominant on the eastern flank of the bank, whereas ebb-oriented transport dominates the western flank, resulting in bedload convergence towards the crest. Surface bedforms, mostly large dunes, suggest a clockwise sand transport around the sand bank, generally coincident with the pattern revealed by bedload calculations. Although the tidal currents are principal processes responsible for the sand-bank dynamics, the predominance of flood-oriented dunes at the bay mouth is indicative of a significant role of winter waves enhancing flood-oriented transport at the mouth. The sand bank appears to be in a dynamic equilibrium, since it has remained stationary for last 25 years. | 지질학 | null | kci_detailed_000236.xml | |||
ART001284399 | oai_dc | Conodonts from the Hwajeol Formation (Upper Cambrian) in the Seokgaejae area, southeast margin of the Taebaeksan Basin | Conodonts from the Hwajeol Formation (Upper Cambrian) in the Seokgaejae area, southeast margin of the Taebaeksan Basin | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Byung-Su Lee(Chonbuk National University); Kwang-Soo Seo(Kongju National University)"
] | The Cambrian-Ordovician succession crops out well in the Seokgaejae area of the southeastern margin of the Taebaeksan Basin. The Upper Cambrian Hwajeol Formation of the Seokgaejae section was studied to refine the conodont zones previously proposed and to correlate them with other areas. Based on euconodont species, four zones are recognized: a new and unnamed informal lowermost and the Proconodontus, Eoconodontus notchpeakensis and Cambrooistodus minutus zones in ascending order. This zonal framework is basically equivalent to that of southern (Lee and Lee, 1988; Lee, 2001, 2002) and northern (Lee, 1989, 1990, 2004) limbs of Paekunsan syncline. The four zones of Seokgaejae section are correlated with those of other parts of the world, including North China, North America and Australia. The study was unable to refine conodont zonation of the basal and uppermost parts of the formation. This may be related to either sealevel change or structural control on sediment deposition in the section. | 지질학 | null | kci_detailed_000236.xml | |||
ART001284403 | oai_dc | Statistical evaluation of groundwater quality around an uncontrolled landfill: implication for plume migration pathways | Statistical evaluation of groundwater quality around an uncontrolled landfill: implication for plume migration pathways | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Joung-Ku Park(Andong National University); Jin-Yong Lee(Kangwon National University); 김태동(Andong National University)"
] | When leachate emanates from an uncontrolled landfill, it poses a threat to the groundwater resources of the surrounding areas. Thus, regular monitoring is essential to protect the groundwater from contamination. In this study, an evaluation is carried out on the quality of groundwater affected by the leachate deriving from an uncontrolled landfill situated in a valley. A nonparametric trend analysis revealed that alkalinity levels were increasing at most monitoring wells, indicating the continuous increase of biodegradation of organic matter. According to a cluster analysis, similar chemical groups developed in a parallel direction to that of groundwater flow. Each group indicates different redox levels and various degrees of landfill leachate effect. This geographical distribution of groups with similar chemical properties is closely associated with local groundwater flow and land surface permeability. However, an evaluation of the effect of recharge flow from the surrounding mountains and of the vertical component of groundwater in the recharge area is essentially required in order to enhance our understanding of redox zonation or distribution of groundwater quality affected by the landfill leachate. | 지질학 | null | kci_detailed_000236.xml | |||
ART001284407 | oai_dc | Bedform dynamics and sand transport pathways in the Garolim Bay tidal flat, west coast of Korea | Bedform dynamics and sand transport pathways in the Garolim Bay tidal flat, west coast of Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"조형래(Andong National University); 이희준(Korea Ocean Research and Development Institute)"
] | An autonomous instrument was deployed over a period of 17 days on the sand flat in Garolim Bay, west coast of Korea to investigate sand transport and bedform dynamics. Spring tidal currents reaching up to 0.9 m/s in depth-averaged speed generated 3-D, small dunes with average wavelength and height of 2.3 m and 0.15 m, respectively. The dunes migrated back and forth in response to reversing tidal currents with the migration distance less than one wavelength for each of flood and ebb. With a decrease of current speed below ca. 0.6 m/s (depth-averaged) during the spring-neap transition, the dunes were rapidly replaced with 3-D ripples. The ripples, however, did not grow to dunes with increasing current speed in the following spring tide. Bedload transport was estimated quantitatively on the basis of the hydrodynamic data. Over the measurement period, repeated flood- and ebb-oriented transport towards the SSW and the NE, respectively, resulted in residual bedload transport towards the ESE. By synthesizing the present result with the previously known bedload transport in the adjacent subtidal areas, it is inferred that the sands in Garolim Bay circulate through the subtidal channels and sand bodies and the intertidal flat, following two, discrete but interconnected, clockwise pathway | 지질학 | null | kci_detailed_000236.xml | |||
ART001284401 | oai_dc | Estimating apparent thermal diffusivity using temperature time series: A comparison of temperature data measured in KMA boreholes and NGMN wells | Estimating apparent thermal diffusivity using temperature time series: A comparison of temperature data measured in KMA boreholes and NGMN wells | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"구민호(공주대학교); 송윤호(한국지질자원연구원)"
] | Two different time series data sets, shallow ground temperatures of 58 synoptic stations of the Korea Meteorological Administration (KMA) and groundwater temperatures of 67 wells of the National Groundwater Monitoring Network (NGMN), were analyzed to estimate the apparent thermal diffusivity by using the analytical solution of the one-dimensional heat conduction equation. The KMA temperature data measured at 1-5 m depths illustrated values of the phase delay and the amplitude decay coincident with their theoretical relationship, indicating that the conductive heat transport should prevail over the nonconductive processes. On the contrary, some of the estimates from temperatures at a depth of 0.5 m were away from the theoretical values. It is most likely that the deviation would be caused by the effects of latent heat associated with freezing and thawing of the near ground surface. In contrast to KMA data, results obtained from the NGMN data highly deviated from the theoretical ones, and thereafter yielded unacceptably high values of thermal diffusivities as compared to the representative values of soils and rocks. Implication of the discrepancy between two data sets was discussed in conjunction with perturbation of the conductive heat transport by free convection of water and air occurring in large diameter wells as well as the convective heat transport by groundwater flow. | 지질학 | null | kci_detailed_000236.xml | |||
ART001284396 | oai_dc | Tectonic Geomorphology of the North Anatolian Fault Zone in the Lake Sapanca Basin (Eastern Marmara Region, Turkey) | Tectonic Geomorphology of the North Anatolian Fault Zone in the Lake Sapanca Basin (Eastern Marmara Region, Turkey) | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Alper Gürbüz(Ankara University); Ömer Feyzi Gürer(Kocaeli University)"
] | In this study the spatial variations of the Plio-Quaternary tectonic activity and deformation of different fault segments of the North Anatolian Fault Zone (NAFZ) in the eastern Marmara region around Lake Sapanca, are assessed using geomorphic, morphometric and bathymetric approaches. Lake Sapanca is an E-W-trending structure located in the zmit-Sapanca Corridor. This region is bounded to the north and to the south by the series of mountain ranges. Geomorphic and morphometric data provide evidence for variations between the two mountain front faults regarding levels of tectonic activity. These studies suggest a relatively high degree of tectonic activity along the Sapanca front in the south, in contrast with a low degree of tectonic activity along the E me front in the north of the study area. This pattern is also consistent with field evidence and seismic data of the study area. Bathymetric profiles of the lake show that the lake basin consists of different fault segments that slipped in the 1999 Kocaeli earthquake. All these data suggest that the zmit-Sapanca Corridor is an asymmetric pull-apart basin associated with displacement along the NAFZ in the Late Pliocene. Lake Sapanca also occurs as a pull-apart basin created by the cross-basin fault of the asymmetric pull-apart basin in the Middle Pleistocene. | 지질학 | null | kci_detailed_000236.xml | |||
ART001284404 | oai_dc | Analysis of ground subsidence in coal mining area using SAR interferometry | Analysis of ground subsidence in coal mining area using SAR interferometry | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jin Baek(Sejong University); 김상완(Sejong University); 박혁진(Sejong University); 정형섭(Yonsei University); 김기동(Sejong University); Jeong Woo Kim(University of Calgary)"
] | This study presents the application of interferometric synthetic aperture radar (InSAR), small baseline subset (SBAS) algorithm and GIS for subsidence analysis in a mining area located at Gangwon-do, Korea. Several mining areas at the Samchuk coalfield had operating coalmines until 2002–2003. Ground deformation has occurred as a form of subsidence due to the continuous mining activity or the collapse of residual cavities. Twenty-three scenes from a JERS-1 satellite acquired from 1992 to 1998 are used to detect the ground movement by means of the differential InSAR process. Distinctive phase variations induced by subsidence were observed in several interferograms. The SBAS algorithm was applied for a detailed analysis. As a result, it was confirmed that deformation was occurring between September 21, 1992 and September 30, 1998 and attained 22 cm at the most significantly subsiding site. The mean and standard deviation of RMS error were 2.0 cm and 0.78 cm, respectively, showing the level of the error due to the used digital elevation model, unwrapping and atmospheric effect. The SBAS-derived cumulative subsidence map was validated with the underground workings and geological maps in order to find the spatial relations and subsiding mechanism. From the spatial comparison with these data, it was shown that the subsidence has taken place above excavations and fault lines. | 지질학 | null | kci_detailed_000236.xml | |||
ART001284395 | oai_dc | Spatio-temporal variation of pH and ionic concentrations in precipitation: interaction between two contrasting stationary sources affecting air quality | Spatio-temporal variation of pH and ionic concentrations in precipitation: interaction between two contrasting stationary sources affecting air quality | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"최병영(Korea University); 윤성택(고려대학교); Gyu-Il Yeom(Dansung Middle School); 김기현(Sejong University); 김경호(Korea University); Yong-Kwon Koh(Korea Atomic Energy Research Institute)"
] | Meteorological and geological factors affecting the pH and ionic concentrations of precipitation were investigated from Jecheon City, Korea. The air quality of the study area is affected by two contrasting stationary sources: 1) a coal-fired power plant to the east-northeast and 2) limestone quarries and cement-manufacturing factories to the east to south-southeast of Jecheon. The temporal change of rainwater chemistry is affected by the interaction between acidic gases and alkaline substances from the above two sources. Accordingly, rainwater pH at a city center widely varies from 4.9 to 8.3. Acidic gases from the power plant are likely to acidify the rainwater pH. As the prevailing wind direction during rainfall events shifted to ENE–SSE, rainwater pH at the city center rapidly increased to >6.5 (up to 7.8). Concomitantly, ionic concentrations (esp., Ca, K, and Na) increased sharply, especially when winds are brown from SE, probably due to major influences of particles coming from limestone quarries. The enrichment factor analyses of acidity and cations also indicate that the acidic components in precipitation are mostly neutralized by limestone particles. In addition, rainwater chemistry showed a spatial variation as a function of the direction and distance from the above two sources. Our results demonstrate a good example of competing roles between the anthropogenic acidic source and the geologic alkaline source. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128597 | oai_dc | Vegetation and climate changes during the Late Pleistocene to Holocene inferred from pollen record in Jinju area, South Korea | Vegetation and climate changes during the Late Pleistocene to Holocene inferred from pollen record in Jinju area, South Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"정철환(전남대학교); 임현수(한국해양과학기술원); 윤호일(한국해양과학기술원 부설 극지연구소)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001041633 | oai_dc | Seismicity and GPS constraints on crustal deformation in the southern part of the Korean peninsula | Seismicity and GPS constraints on crustal deformation in the southern part of the Korean peninsula | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Shuanggen Jin(Korea Astronomy and Space Science Institute); Z.C. Li(National Geomatics Center of China); Pil-Ho Park(Korea Astronomy and Space Science Institute)"
] | Thre years of continuous observations at 45 GPSsites in South Korea show horizontal deformation velocities areless than 3 mm/yr with respect to the stable South Korea block.These velocities and the associated horizontal strain rate revealthat South Korea is dominated by both ENE-WSW compres-rate in South Korea derived from recently recorded earth-quake data (Mw > 4.0, 1936-2004), the principal horizontal axesof both strain rate tensors are nearly consistent, indicating thatthe seismicity can be used to improve GPS-derived deformationstyle and orientation. In addition, it also reflects that the occur-rence of shallow earthquakes in South Korea is closely relatedwith the horizontal strain. | 지질학 | null | kci_detailed_000236.xml | |||
ART001043587 | oai_dc | Conceptual problems and recent progress in fluvial sequence stratigraphy | Conceptual problems and recent progress in fluvial sequence stratigraphy | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"이철우(충북대학교)"
] | Although sequence stratigraphic analysis on marinesuccessions have revolutionized interpretation of sedimentary recordssince the 80’s, those on inland fluvial sucesions have been ham-pered due to complex responses of a fluvial system to allogenic andautogenic controls. Such a complexity combined with the vaguedefinition of accommodation in an inland fluvial setting, makes itdifficult to divide the fluvial successions into genetic packagesor regressive surfaces. It means that the application of sequencestratigraphic concept to fluvial successions requires quite differentapproach to the definition and recognition of fluvial sequence.Curent fluvial sequence stratigraphy models emphasizing the roleof base-level in accommodation change are not the cases. Theyoversimplify the relationship between accommodation and alluvialarchitecture, without considering the difference in organizationand nature of stratigraphic records between the marine and theinland fluvial system. The models do not provide a standard pro-ies on the key surfaces and thus do not predict the nature ofstratigraphic records of an inland fluvial system. In this article,recent reports and different perspectives on the spatial and tem-poral variation of fluvial successions are reviewed in order to shedlight on the efforts toward the establishment of new fluvial sequencestratigraphy model which should be conceptually sound andmethodologically objective, enabling the fluvial sucesions to beinterpreted in the more flexible and predictable way even in sub-surface data. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128649 | oai_dc | Q-values for P and S waves in the southern Korean Peninsula based on the coda-normalization method | Q-values for P and S waves in the southern Korean Peninsula based on the coda-normalization method | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Sung Kyun Kim(Chonnam National University); Jae Yol Yang(Chonnam National University); Jinyong Oh(Kongju National University)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001043586 | oai_dc | Tectonic implications of quartzite-shale and phyllite beds in the Seochangri Formation (Okcheon Group), Bonghwajae section, mid-Korea | Tectonic implications of quartzite-shale and phyllite beds in the Seochangri Formation (Okcheon Group), Bonghwajae section, mid-Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Sung Kwun Chough(서울대학교); 김현철(서울대학교); Jusun Woo(서울대학교); Hyun Suk Lee(서울대학교)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001041465 | oai_dc | Damage process of intact granite under uniaxial compression: microscopic observations and contact stress analysis of grains | Damage process of intact granite under uniaxial compression: microscopic observations and contact stress analysis of grains | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Sang-Eun Lee(Sambo Eng. Corporation Ltd.); Man-Il Kim(Korea Inst. of Geoscience and Mineral Resources); Jae-Hyeon Park(Inje University); Chang-Kun Park(Kwandong University); 강미아(Andong National University); 정교철(Andong National University)"
] | Understanding the damage mechanism in materialsis one of the very important subjects in the science and engineer-ing field. The microstructural change, microcracking, which causesmaterial strength deterioration, is usually termed as damage. Wegrained granite specimen under uniaxial compressive stress to bet-ter understand the fundamental problems of the true damage pro-cess at a micro to macro scale. With the use of an experimentalsystem, the continuous observation of the damage process alsoenabled us to clarify micro-damage in great detail. The results indi-cate that the mechanisms of micro-damage initiation in a granitespecimen under uniaxial compressive stres may be separated intotwo cases; the first in which two grains, such as quartz and feld-and the second in which a biotite grain inclined to the axial stressdirection is contained within a feldspar grain. The damage isstrongly localized for both cases and some shear zones are foundin the specimens. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128650 | oai_dc | Computational estimation of compaction band permeability in sandstone | Computational estimation of compaction band permeability in sandstone | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"김영석(공주대학교); Kurt Sternlof(MIT); Tapan Mukerji(Stanford University)"
] | Permeability measurements are difficult to obtainwhen sample availability is restricted, dimensions limited, or mate-rials poorly consolidated. With subsurface cores of sandstone con-taining thin, tabular compaction bands (CBs), all three challengescan arise. Computational methods for estimating permeabilityfrom thin section provide an alternative. We evaluate a new phys-are conducted on stochastic realizations of 3D pore structure gen-erated from thin-section images. Applied to the Aztec sandstone ofsoutheastern Nevada, an exhumed analog for CB-rich sandstoneaquifers and reservoirs, the estimates agree wel with availabledataa few millidarcys (CB) to a few Darcys (matrix)capturingthe range of both matrix and CB permeability from a single, rep-resentative thin-section. The technique also gives us a tool for esti-mating permeability anisotropy due to bed types in sandstone. Fora subsurface with Aztec equivalent, this result can be invaluable,since pervasive arrays of compaction bands in sandstone havebeen shown capable of exerting substantial fluid flow effects atscales relevant to aquifer and reservoir management. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128551 | oai_dc | Early evolution of the Duwibong Unit of the lower Paleozoic Joseon Supergroup, Korea: A new view | Early evolution of the Duwibong Unit of the lower Paleozoic Joseon Supergroup, Korea: A new view | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Yongin Kim(서울대학교); Yong Il Lee(서울대학교)"
] | This study proposes the revised stratigraphy of thelower part of the Duwibong Unit of the lower Paleozoic JoseonSupergroup that the Myobong Formation is the lowermost stra-tum. The Jangsan Formation, which has long been regarded as thelowermost stratum of the Unit, is likely to be of late Proterozoic inage. It is also proposed that the Myeonsan and Myobong forma-in the early stage is interpreted to be the local proximal facieswhich was overlain by the Myobong Formation in the late stage.This new interpretation is based on the presence of the unconfor-mity between the Jangsan and Myobong formations observed intwo areas (Dongjeom area, Taebaek City and Deogam area,Imgye-Myeon, Jeongseon-Gun). Sandstone facies in the topmostpart of the Myeonsan Formation is gradually overlain by siltstoneto mudstone facies of the Myobong Formation. In addition, Myo-bong mudstone is geochemically similar to Myeonsan mudstone.The similarity in lithologies among Jangsan sandstone, quartza-renite gravelly clasts in the Myeonsan Formation and the newlydefined late Proterozoic stratum (Kim and Lee, 2003a) immedi-ately underlying the Myeonsan Formation provides additional evi-dence that the Jangsan Formation is not the lowermost stratum ofthe Duwibong Unit but the source rocks of quartzarenite gravellyclasts of the Myeonsan Formation. | 지질학 | null | kci_detailed_000236.xml | |||
ART001128598 | oai_dc | Accumulation history of anthropogenic heavy metals (Cu, Zn, and Pb) in Masan Bay sediments, southeastern Korea: A role of chemical front in the water column | Accumulation history of anthropogenic heavy metals (Cu, Zn, and Pb) in Masan Bay sediments, southeastern Korea: A role of chemical front in the water column | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"정갑식(한국해양과학기술원); J.H. Cho(Korea Ocean Research and Development Institute); J.H. Lee(Korea Ocean Research and Development Institute); K.H. Kim(Chungnam National University)"
] | In Masan Bay, the drainage basin for the wastewa-ter of heavily-industrialized cities and harbors in the southeasternKorea, a composite analysis of sediment cores reveals that accu-mulation history and behaviors of heavy metals are distinctivedepending on anthropogenic activities and dissolved oxygen inwater column. In the inner bay, Cu, Zn, and Pb have been enriched,associated with organic and sulfide matter, over background levelssince the mid-1940s. It seems to result from the deposition ofstream-disposed sewage under a poor water circulation beforemost of sewage collected in Masan City has been treated and dis-posed through an outfall into the outer bay since the late 1993. Theoutfall disposal contaminated the topmost sediments of the outerbay with the three metals, 2.2 to 3.2 times as much as the back-ground. The three metals are strongly associated with Mn in thebay mouth, probably resulting from their oxidative precipitationand mixing of anoxic bay bottom water with oxygenated coastalwater. The bay sediments seem to act as a mobile pool in that Mnand the pollutant metals are often remobilized to the anoxic bot-tom water in summer. | 지질학 | null | kci_detailed_000236.xml | |||
ART001041472 | oai_dc | Sequence stratigraphy of Pyeongan Supergroup (Carboniferous-Permian), Taebaek area, mideast Korea | Sequence stratigraphy of Pyeongan Supergroup (Carboniferous-Permian), Taebaek area, mideast Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Hyun Suk Lee(서울대학교); Sung Kwun Chough(서울대학교)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001043591 | oai_dc | Deep geoelectrical structure in and around the southern Korean Peninsula by GDS study | Deep geoelectrical structure in and around the southern Korean Peninsula by GDS study | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Seokhoon Oh(Kangwon Nat’l Univ.); Jun-Mo Yang(서울대학교); Duk Kee Lee(METRI/KMA); Byung-Doo Kwon(서울대학교); Seung-Hwan Chung(Korea Institute of Geoscience and Mineral Resources); Yoonho Song(Korea Institute of Geoscience and Mineral Resources); Kyung Duck Min(Yonsei University); Masao Nakada(Kyushu University); Toru Mogi... | 지질학 | null | kci_detailed_000236.xml | ||||
ART001067432 | oai_dc | Influence of accumulated leachate on settlement and in-situ geotechnical properties of a landfill site | Influence of accumulated leachate on settlement and in-situ geotechnical properties of a landfill site | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Yeon-Soo Jang(Dongguk University); Yong-In Kim(Dongguk University)"
] | In this study, geotechnical properties of the subsurface clay stratum obtained from the in-situ tests are compared with those of the relative laboratory tests. The influence of accumulated leachate on the settlement of the landfill and the geotechnical properties of underlying clayey soil are analyzed using the in-situ measured settlement data. The consolidation data is then back-calculated from the settlement data and compared with the laboratory scale consolidation data. It was found that the settlement was retarded by the accumulated leachate and the consolidation properties obtained from the field measurement were 1.5 times higher than the laboratory obtained data, which proves the importance of field measurement of geotechnical data during the operation period. | 지질학 | null | kci_detailed_000236.xml | |||
ART001067435 | oai_dc | Permeable reactive barrier using atomized slag material for treatment of contaminants from landfills | Permeable reactive barrier using atomized slag material for treatment of contaminants from landfills | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Ha Ik Chung(Korea Institute of Construction Technology); Sang Keun Kim(Korea Institute of Construction Technology); Yong Soo Lee(Korea Institute of Construction Technology); Jun Yu(Korea Institute of Construction Technology)"
] | This paper presented a permeable reactive barrier using atomized slag material for the treatment of landfill leachate and contaminated ground water. This study investigated the feasibility of using atomized slag and modified byproducts from iron and steel making industries as new reactive material for leachate treatment. Batch and column tests, and field pilot tests were performed as model systems to explore the effect of atomized slag as an alternative reactive material. From the evaluation of various atomized slag based PRB systems, a combination of an atomized slag and sand system was found to have a substantial reaction capacity for leachate and organics, thus it has the potential to be used in the permeable reactive barriers for a subsurface remediation. The test results showed that the adsorption capacity is high in the order of pH 7 > pH 5 > pH 9, the heavy metal removal rate is high in the order of Cd > Pb > Cr > Cu, and organic removal rate is high in the order of T-P > COD > T-N. | 지질학 | null | kci_detailed_000236.xml | |||
ART001195940 | oai_dc | Laboratory study on the dielectric properties of contaminated soil using CPT deployed probe | Laboratory study on the dielectric properties of contaminated soil using CPT deployed probe | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"김용성(서울대학교); 오명학(한국해양과학기술원); 박준범(서울대학교)"
] | Over the past decade, direct-push geotechnical sensors or penetration probes have earned widespread acceptance in the geoenvironmental fields of study as a more viable and cost-effective solution for the assessment of soil and groundwater contamination. Of these, resistance cone penetrometer (RCPT) devices equipped with electrical sensors have been successful in qualitatively locating contaminated areas. While the RCPT method has proved to be successful for delineating inorganic contaminants in the saturated zone, its applicability in the vadose zone and soils contaminated by hydrocarbon compounds have been doubtful. The objective of this research is therefore focused on verifying the applicability of capacitance measurements on an existing RCPT module to provide information on the moisture content and presence of various kinds of contaminants. Laboratory experiments were performed on carefully prepared soil layers to investigate the sensitivity of the measured capacitance on the soil moisture content and different types of contaminants. Results confirmed that the measured capacitance of soils reflected the volumetric amount of water present in both un-contaminated and contaminated soils. In addition, capacitance measurement showed potentials for applicability in detecting plumes of non-aqueous phase contaminants above the groundwater table. Consequently, recommendations were made on the basis to which capacitance measurements can support interpretations of the electrical resistivity data. | 지질학 | null | kci_detailed_000236.xml | |||
ART001065864 | oai_dc | Hydrochemistry and isotope geochemistry of Song Stream, a headwater tributary of the South Han River, South Korea | Hydrochemistry and isotope geochemistry of Song Stream, a headwater tributary of the South Han River, South Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"류종식(Korea Basic Science Institute); Kwang-Sik Lee(Korea Basic Science Institute); Ho-Wan Chang(서울대학교)"
] | To investigate the geochemical and isotopic characteristics of a headwater tributary of the South Han River, we analyzed major elements, stable isotopes of oxygen, hydrogen, carbon, and sulfur, and strontium (Sr) isotopes of stream and groundwater samples collected from the Song Stream watershed in summer 2003. The stream water samples of the study area were divided into three water types, among which dissolved ion concentrations differed considerably. Our results strongly indicate that the chemical composition of Song Stream is controlled by silicate and carbonate weathering, as well as anthropogenic contamination, and variations in major dissolved ions and Sr isotopic ratios are mainly correlated to lithological variations in the watershed. The dissolved loads of the main channel of Song Stream are largely controlled by carbonate dissolution. Thus, the water chemistry of the main channel is probably dominated by the chemical weathering of carbonates, even where carbonates comprise only a minor proportion of the bedrock geology. The Sr isotopes and Mg/Ca molar ratios indicate that a dolomite end-member may exist in the study area, which would be compatible with the cationic characteristics of Song Stream. All groundwater samples from the study area, except for one, had significantly high nitrate concentrations (0.75–2.42 mmol/L) that exceeded the drinking-water standard and possibly resulted from both sewage and agricultural inputs. | 지질학 | null | kci_detailed_000236.xml | |||
ART001067645 | oai_dc | Estimation of site-dependent spectral decay parameter from earthquake ground motions in southern Korea | Estimation of site-dependent spectral decay parameter from earthquake ground motions in southern Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Namdae Jo(서울대학교); Chang-Eob Baag(서울대학교)"
] | For the simulation of ground motions, various seismic parameters are to be estimated in the region where the motions are applicable. One of the most important parameters is the spectral decay parameter . The spectral decay parameter in conventional sense is for a regional area rather than for a local site. For the site-specific simulation of ground motions, however, a site-dependent spectral decay parameter should be estimated at an observation site. It is difficult to deduce the characteristics of each observation site using the conventional procedure. In order to obtain the site-dependent spectral decay parameter , we should estimate site-independent q and site-specific s successively. A procedure is to use the coda normalization method for the computation of q value as the first step followed by the next step, the computation of s for each site using the given q evaluated at the first step. For the application of the method, we used a total of 754 accelerograms from small earthquakes occurring in southern Korea from January 1999 to April 2003. After inversion process for q, we obtained the q value of 0.0001382 sec/km in southern Korea. The s values are distributed from -0.15 to 0.35 second at 29 observation sites. The values of s are relatively large at the eastern and southern part of southern Korea. In addition, we also estimated the value of 0, distance independent term of at regional area, as 0.007 second using all acceleration spectra in southern Korea. | 지질학 | null | kci_detailed_000236.xml | |||
ART001067430 | oai_dc | The occurrence time estimation of oil contaminated source considering hydro-geological features | The occurrence time estimation of oil contaminated source considering hydro-geological features | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Yang-Kyoo Lee(Daelim College); Hee-Wook Ryu(Soongsil University); 이재영(서울시립대학교); 한중근(중앙대학교); Kyong-Ho Chang(Chung-Ang University); Jae-Ho Lee(Chung-Ang University)"
] | As industrial activities increase, the risk of geological contamination in Korea is becoming higher. The possibility of contamination is especially rising due to the increase of oil leakage and the corrosion of oil storage facilities. In this study, which was based on oil leakage cases in Korea, the occurrence time of oil contamination trace and source was hydro-geologically, such as groundwater flow considered soil composition, physical properties of soil and level of soil layers etc, estimated by examining the cause and ranges of an oil contamination event. It has been verified that the contamination history of potential contamination sources as well as the ranges and features of contamination sources were analyzed based on the test results of well, soil, and groundwater contamination status. The influential range of contaminated grounds and the occurrence time of oil leakage, considering hydro-geological features in the sites, can also be estimated. The occurrence time of oil leakage was estimated as 430 days when the mean void velocity was 0.52 m/day. The distance of pollutant migration was also estimated using the same method at 225 m | 지질학 | null | kci_detailed_000236.xml | |||
ART001067429 | oai_dc | Remediation of groundwater and soil environments: an emerging field of research in Korea | Remediation of groundwater and soil environments: an emerging field of research in Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"이강근(서울대학교); Prabhakar Clement(Auburn University)"
] | This special issue contains selected papers from the International Symposium on “Soil and Groundwater Environment” held to celebrate the 10th Anniversary of the Korean Society of Soil and Groundwater Environment (KOSSGE) in Seoul from 27-29 October, 2005. KOSSGE is one of the major societies comprising the Association of Korean Geoscience Societies that publish the Geosciences Journal.
Over the past two year period, the number of papers submitted to the KOSSGE’s Geosciences Journal has rapidly increased. Currently, at least one or two papers in each issue of Geosciences Journal covers various issues related to geology and earth sciences. The increased submission obviously reflects the increase in academic research activity in this field of research.
This special issue contains articles that focus on research problems related to subsurface characterization and remediation. Environmental problems are inherently multi-disciplinary in nature and hence it is strongly recommended that, we the geologists, hydrologists, engineers and earth scientist, should work as a team to develop a fundamental understanding of the various environmental systems of our planet Earth. The international symposium covered relatively broad topics related to groundwater and soil environments, and only a selected number of the articles are included in this issue. | 지질학 | null | kci_detailed_000236.xml | |||
ART001067431 | oai_dc | Treatment of abandoned coal mine discharged waters using lime wastes | Treatment of abandoned coal mine discharged waters using lime wastes | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"양재의(강원대학교); Hee Joung Kim(Kangwon National University); 옥용식(강원대학교); 이재영(서울시립대학교); 박준홍(연세대학교)"
] | We evaluated the feasibility using waste lime for reclaiming abandoned coal mines. For this evaluation, lime wastes were reused in neutralizing coal wastes in a field experiment. In runoff and leachate, pH and heavy metals were monitored for approximately 4 months to evaluate ecotoxicity at the remediation site. When the amount of added lime cake was equivalent to the 100% lime requirement for neutralization, stable neutralization was obtained during the entire experimental period. Because of pH neutralization, ecotoxic heavy metals were efficiently contained in the coal waste pile. When smaller amounts of lime cake were applied, although heavy metal releases did not increase, the pH in runoff/leachate fluctuated depending on the amount of precipitation and the history of field treatment. This suggests that field specific environmental factors have to be considered in determining the amount of lime cake required for stable neutralization. These findings from the field study demostrated the potential use of lime waste from soda ash production for reclaming abandoned coal mines. | 지질학 | null | kci_detailed_000236.xml | |||
ART001195939 | oai_dc | Remediation of chromite ore processing residue using ferrous sulfate and calcium polysulfide | Remediation of chromite ore processing residue using ferrous sulfate and calcium polysulfide | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Mahmoud Wazne(Stevens Institute of Technology); Deok Hyun Moon(Stevens Institute of Technology); Santhi Chandra Jagupilla(Stevens Institute of Technology); Sarath Chandra Jagupilla(Stevens Institute of Technology); Christos Christodoulatos(Stevens Institute of Technology); Dimitris Dermatas(Stevens Institute of Te... | Batch tests were conducted to assess the potential use of ferrous sulfate and calcium polysulfide for the remediation of chromite ore processing residue (COPR). The remediation process entails addition of ferrous sulfate or calcium polysulfide to chemically reduce hexavalent chromium [Cr(VI)] to trivalent chromium [Cr(III)] in slurry form and pH adjustment to precipitate Cr(III) as chromium hydroxide. The present study investigates the effects of COPR particle size, treatment pH, and chemical dosage on the performance of the treatment. Smaller particle size resulted in increases in alkaline digestion and Toxicity Characteristic Leaching Procedure (TCLP) Cr(VI) concentrations for the untreated samples. The chemical reduction of Cr(VI) with ferrous iron and sulfides was non-stoichiometric. Four times the stoichiometric amount of ferrous iron or two times the stoichiometric amount of polysulfide were needed to meet both the New Jersey Department of Environmental Protection (NJDEP) regulatory limit of 240 mg/kg for Cr(VI) and EPA TCLP regulatory limit of 5 mg/L for chromium [Cr]. pH adjustment was necessary to prevent the formation of ettringite, a swell causing mineral, upon the introduction of sulfate to the COPR material via ferrous sulfate or calcium polysulfide. The slow hydration of some COPR minerals caused the pH of the treated COPR to creep upward during the curing period. However, when sufficient acid was added, the pH value was controlled at less than 9.27 for a curing period of 1.5 years, which prevented the formation of ettringite. | 지질학 | null | kci_detailed_000236.xml | |||
ART001067647 | oai_dc | Effect of mining and geology on the chemistry of stream water and sediment in a small watershed | Effect of mining and geology on the chemistry of stream water and sediment in a small watershed | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jae Gon Kim(Korea Institute of Geoscience and Mineral Resources); Kyung-Seok Ko(Korea Institute of Geoscience and Mineral Resources); Tack Hyun Kim(Mine Reclamation Corporation); Gyoo Ho Lee(Korea Gas Corporation); 송윤구(Yonsei University); 전철민(Korea Institute of Geoscience and Mineral Resources); Jin-Soo Lee(Korea ... | Chemical characteristics of the stream water and sediment in the small watershed with two distinctive mineralization zones (Cu and Pb-Zn), 7 abandoned mines and an active quarry were investigated to examine the effects of mining activity and regional geology on the chemistry. The stream water affected by the abandoned mines had Ca-SO4 type but the other had Ca-HCO3 type. The mine affected stream water and sediment showed relatively high concentrations of metals (Cu, Pb, Zn, Cd, Co, Ni, Mn, Al and Fe). The concentrations of Al, Mn, Fe and Cu of the stream water collected near an abandoned mine (Guryong) exceeded the EPA surface water quality standards (Al: 5.52 mg L-1, Mn: 1.58 mg L-1, Fe: 1.49 mg L-1, Cu: 0.63 mg L-1). The effect of mining activity on the stream water chemistry was attenuated in a relatively short distance from the source (< 200 m) along the watercourse but the signature in the sediment showed a longer lasting effect (about 2 km) than that in the stream water. The residual and reducible forms were the dominant fractions of the heavy metals in the stream sediment. The particulate transportation was the major cause of the dispersion of heavy metals in the watershed. There was a contrasting spatial distribution of background metal concentration in the stream sediment: a relatively higher concentration of Cu in the Cu mineralization zone and a relatively higher concentration of Pb, Zn and Mn in the Pb-Zn mineralization zone. | 지질학 | null | kci_detailed_000236.xml | |||
ART001067644 | oai_dc | Vegetation response to climate change on Jeju Island, South Korea, during the last deglaciation based on pollen record | Vegetation response to climate change on Jeju Island, South Korea, during the last deglaciation based on pollen record | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Chull-Hwan Chung(Chonnam National University)"
] | A pollen record (ca. 21,800 to 9,900 cal. yr BP) from a maar reveals a detailed history of vegetation and climate changes during the last deglaciation on Jeju Island, South Korea. During the LGM (ca. 21,800 to 14,400 cal. yr BP) Artemisia-dominated grassland with patches of cool temperate deciduous broadleaved forest developed under cold dry conditions. From ca. 14,400 to 11,800 cal. yr BP a vegetation transition from glacial type to interglacial is indicated by the expansion of temperate deciduous broadleaved forest and the retreat of grassland vegetation. The appearance of warm temperate evergreen and deciduous broadleaved forests with a fern understory after ca. 11,800 cal. yr BP suggests warm humid conditions, similar to modern climate of Jeju Island. Prominent fluctuations in Artemisia and Polypodiaceae indicate variability in humidity during the Late Pleistocene to Holocene transition. The pollen record reflects a vegetation response not only to the last deglacial warming but also to the influence of geographical change resulted from sea-level rise. | 지질학 | null | kci_detailed_000236.xml | |||
ART001195941 | oai_dc | Feasibility study of the bio-barrier with biologically-active tire rubbers for treating chlorinated hydrocarbons | Feasibility study of the bio-barrier with biologically-active tire rubbers for treating chlorinated hydrocarbons | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"이재영(서울시립대학교); Chul-Hwan Moon(University of Seoul); Jung-Hoon Kim(University of Seoul); Byung-Taek Oh(Hallym University)"
] | The leachate from landfill released into the subsurface environment can result in serious environmental problems such as soil and groundwater contaminations because there is no landfill liner system in the unsanitary landfill. The authors developed the multi-permeable reactive barriers (M-PRBs) to treat mixed contaminants in leachate and to get over the limitation of a single reactive barrier. The M-PRBs consist of two reactive barriers using the abandoned materials such as waste steel scrap mixed with converter slag acting as an iron-based barrier and biologically active tire acting as a bio-barrier. In this study, the efficiency of tire rubbers as a sorption media and a biologically active media were evaluated. Tire rubbers extensively adsorbed amounts of chlorinated compounds and the biologically active tire media removed chlorinated organic compounds (93% of TCE and 77% of PCE) as well as organic matters (80%) for 10 days. Overall, this work suggests that biologically active tire media followed by an iron-based barrier in the M-PRBs can effectively treat mixed contaminants in landfill leachates through bioaugmentation | 지질학 | null | kci_detailed_000236.xml | |||
ART001218037 | oai_dc | Depositional processes and sequence stratigraphy of the Jigunsan Formation (Middle Ordovician), Taebaeksan Basin, mideast Korea: implications for basin geometry and sequence development | Depositional processes and sequence stratigraphy of the Jigunsan Formation (Middle Ordovician), Taebaeksan Basin, mideast Korea: implications for basin geometry and sequence development | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jusun Woo(서울대학교); Sung Kwun Chough(서울대학교)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001221558 | oai_dc | Classification of springs of Jeju Island using cluster analysis of annual fluctuations in discharge variables: investigation of the regional groundwater system | Classification of springs of Jeju Island using cluster analysis of annual fluctuations in discharge variables: investigation of the regional groundwater system | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Taehee Kim(Korea Institute of Geoscience and Mineral Resources); Deok-Cheol Moon(Jeju Provincial Water Resources Management Office); Won-Bae Park(Jeju Development Institute); Ki-Hwa Park(Korea Institute of Geoscience and Mineral Resources); Gi-Won Ko(Jeju Provincial Water Resources Management Office)"
] | 지질학 | null | kci_detailed_000236.xml | ||||
ART001218038 | oai_dc | Sulfur and oxygen isotopic compositions of the dissolved sulphate in the meteoric water in Chuncheon, Korea | Sulfur and oxygen isotopic compositions of the dissolved sulphate in the meteoric water in Chuncheon, Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jae-Young Yu(Kangwon National University); 박영윤(Kangwon National University); Randall E. Mielke(Jet Propulsion Laboratory); Max L. Coleman(Jet Propulsion Laboratory)"
] | : The meteoric water deposited in the Chuncheon area was collected from July 2002 to May 2004 and its chemical and isotopic compositions were analyzed to examine if the isotopic data can help trace the sources of the sulfur pollutant and understand the details of acid formation processes in the air. The chemical compositions of the meteoric water indicate that the sulfate mostly comes from anthropogenic sources. The sulfur isotopic compositions of the dissolved sulfate in the meteoric water (34SSO4) vary from 2.6 to 7.5 with little seasonal differences, which are significantly different from those of the sulfur in the coal being locally consumed (4.5 to 0.7). This difference indicates that the local coal consumption gives insignificant contribution to the pollutant sulfur in the acid deposition of the area. The relationship between 34SSO4 and the concentration of sulfate suggests that the sources of pollutant sulfur are variable and inhomogeneous.The oxygen isotopic compositions of the dissolved sulfate in the meteoric water (18OSO4) range from 9.0 to 17.2, which are generally lower in winter than in spring. Comparison between the measured and calculated values of 18OSO4 suggests that the oxygen isotopic exchange between sulfite and water occurs before its oxidation to sulfate. The extent of isotopic exchange seems to be not controlled by equilibrium but by kinetic fractionation. The poor correlation between 18OSO4 and the oxygen isotopic composition of the meteoric water confirms the disequilibrium nature of the isotopic exchange. | 지질학 | null | kci_detailed_000236.xml | |||
ART001218034 | oai_dc | Laterally contiguous, concave-up basal shear surfaces of submarine landslide deposits (Miocene), southern Cyprus: differential movement of subblocks within a single submarine landslide lobe | Laterally contiguous, concave-up basal shear surfaces of submarine landslide deposits (Miocene), southern Cyprus: differential movement of subblocks within a single submarine landslide lobe | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Sang Hoon Lee(Korea Ocean Research and Development Institute); Dorrik A. V. Stow(University of Southampton)"
] | Detailed analysis of submarine landslide deposits from extensive outcrops of a Miocene slope succession (southern Cyprus) reveals significant information on basal shear surfaces of the slides. The deposits, 325 m thick, occur as lobate beds in transverse section at two stratigraphic horizons. Each slide lobe shows a series of adjacent concave-up basal shear surfaces, 30150 m wide, which nearly intersect or overlap with their neighbors. The upward curved or stepped margins of basal shear surfaces, here called shear wings, exhibit variable length (ca. 530 m long) and inclination. The basal shear surfaces were probably initiated along a bedding-parallel weak horizon, but propagated upward at some point where downslope driving stresses decreased or resisting forces increased. Considering the dimension (ca. 530 m long) of the shear wings, the multiple, adjacent concave-up basal shear surfaces can be seen as a single basal shear plane in most high-resolution subbottom and seismic images because of the limit of acoustic resolution. The multiple contiguous, concave-up basal shear surfaces in each lobe suggest that a submarine landslide lobe probably moved downslope as several sub-blocks in transverse section, rather than as a single unified one. The boundary of the sub-blocks where concave-up basal shear surfaces nearly intersect or overlap with their neighbors marks a zone of differential movement between the sub-blocks, each probably showing very subtle differences in magnitude or speed of downslope movement. This subtly differential movement would create intense sediment deformation at the boundary between the sub-blocks, and may lead to longitudinal shear ridges on the upper surface. | 지질학 | null | kci_detailed_000237.xml | |||
ART001218040 | oai_dc | Optimal groundwater remediation design considering effects of natural attenuation processes: pumping strategy with enhanced-natural-attenuation | Optimal groundwater remediation design considering effects of natural attenuation processes: pumping strategy with enhanced-natural-attenuation | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"박동규(서울대학교); 고낙열(서울대학교); 이강근(서울대학교)"
] | : A simulation-optimization model is proposed to investigate the effect of natural attenuation processes on pump-and-treat and to enhance the application efficiency of the remediation method. Numerical experiments under varying retardation and attenuation conditions demonstrate that the efficacy and the feasibility of pump-and treat are considerably sensitive to the retardation factor and the attenuation rates. The severe retarded condition and attenuation are, the more remediation costs are required and even success of the remediation can not be guaranteed. For these conditions, long pumping strategy or enhancement of biodegradability can be cost-effective and safe. These results indicate that optimal remediations with or without considering natural attenuation processes result in quite different pumping schedules and well locations, and this should be noticed in real practices of groundwater remediation design. The enhanced-natural-attenuation (ENA) optimization process developed to overcome some limitations of the pump-and-treat method determines the locations injecting oxygen to attenuate residual contaminants remained in the aquifer after applying the pump-and-treat. The performances of the ENA model with the cost and the contaminant removal are evaluated for three scenarios. Among these scenarios, second scenario designed for each 0.5 years was most suitable to efficiently remove a low concentration of contaminants remained in the aquifer. This optimization model will be helpful to improve the efficiency in contaminated sites applying the pump-and-treat system. | 지질학 | null | kci_detailed_000237.xml | |||
ART001218031 | oai_dc | Middle Cambrian trilobites and biostratigraphy of the Daegi Formation (Taebaek Group) in the Seokgaejae section, Taebaeksan Basin, Korea | Middle Cambrian trilobites and biostratigraphy of the Daegi Formation (Taebaek Group) in the Seokgaejae section, Taebaeksan Basin, Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Imseong Kang(서울대학교); Duck K. Choi(서울대학교)"
] | The Daegi Formation in the Taebaeksan Basin of Korea is composed of shallow marine carbonate facies and has been known to yield relatively diverse invertebrate fossils of middle Cambrian age. This paper describes seventeen trilobite species belonging to fifteen genera from the Daegi Formation exposed in the Seokgaejae section, located at southeastern corner of the Taebaeksan Basin. They comprise two agnostoid species (Ammagnostus laiwuensis and Ammagnostus sp.) and fifteen polymerid taxa (Dorypyge richthofeni, Amphoton deois, Blackwelderia sp., Teinistion? sp., Palaeadotes? sp., Anomocarella temenus, ptychopariid gen. and sp. indeterminate., Changqingia deprati, Crepicephalina damia, Cyclolorenzella rotundata, Cyclolorenzella sp., Proasaphiscus sp., Manchuriella macar, Ignotogregatus manholi, and Metanomocarella tumida). The stratigraphic distribution of these trilobites provides a basis for establishment of new trilobite zones within the formation: i.e., the Crepicephalina, Amphoton, and Cyclolorenzella zones in ascending order. The Crepicephalina Zone is dominated by Crepicephalina damia, Manchuriella macar, Ignotogregatus sp. cf. I. manholi, and Ammagnostus laiwuensis. The Amphoton Zone is recognized by the restricted occurrence of Amphoton deois and dominance of Dorypyge richthofeni. The Cyclolorenzella Zone is characterized by the occurrence of Cyclolorenzella rotundata and some damesellid trilobites. These three biozones belong to middle to upper middle Cambrian in age and are closely correlated with the Crepicephalina, Amphoton, and DamesellaYabeia zones of North China, respectively. | 지질학 | null | kci_detailed_000237.xml | |||
ART001218041 | oai_dc | Hydraulic conductivity and mechanical stiffness tensors for variably saturated true anisotropic intact rock matrices, joints, joint sets, and jointed rock masses | Hydraulic conductivity and mechanical stiffness tensors for variably saturated true anisotropic intact rock matrices, joints, joint sets, and jointed rock masses | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jun-Mo Kim(서울대학교)"
] | : A series of global hydraulic conductivity and mechanical stiffness tensors for variably saturated true anisotropic intact rock matrices, joints, joint sets, and jointed rock masses is formulated to expand the fully coupled poroelastic governing equations presented by Kim (2004) for groundwater flow and solid skeleton deformation in porous geologic media to those for fractured and fractured porous geologic media. The global hydraulic conductivity tensors are derived from the local hydraulic conductivity tensors using coordinate transformation on the basis of the generalized Darcys law. The global mechanical stiffness tensors are then derived from the local or global mechanical compliance tensors using coordinate transformation on the basis of the generalized Hookes law. | 지질학 | null | kci_detailed_000237.xml | |||
ART001218039 | oai_dc | Estimating polar marine free-air gravity anomalies from dense radar altimeter data | Estimating polar marine free-air gravity anomalies from dense radar altimeter data | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jeong Woo Kim(Sejong University); Bang Yong Lee(Korea Ocean Research and Development Institute)"
] | : Geological free-air gravity anomalies of the polar marine areas were estimated from dense ERS1 radar altimeter data. Data processing techniques were developed to deal with data gaps from the seasonal ice coverage, directional variations of the ascending and descending orbital data tracks, and other high-latitude mapping problems. To reduce along-track data distortions, the ERS1 168 altimetry data were geodetically co-phased and spectral correlation filtered. Geoid undulations were first estimated and converted to the free-air gravity anomalies by Bruns formula and the fundamental equation of geodesy. The results in the open waters of the Barents and Kara Seas of the Russian Arctic show good coherence with global model and shipborne data, whereas along the coastline, strong ocean currents, possible tidal model inaccuracies, and poor data coverage limit the coherence. The approach uses local satellite altimetry to update reference gravity models in the polar regions. It thus has considerable utility for resolving details of the polar marine gravity field as global warming removes the ice cover and the cross-track distance of altimeter missions decreases. | 지질학 | null | kci_detailed_000237.xml | |||
ART001219204 | oai_dc | Metal reduction and biomineralization by an alkaliphilic metal-reducing bacterium, Alkaliphilus metalliredigens (QYMF) | Metal reduction and biomineralization by an alkaliphilic metal-reducing bacterium, Alkaliphilus metalliredigens (QYMF) | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"노열(전남대학교); 전철민(Korea Institute of Geoscience and Mineral Resources); 문지원(Oak Ridge National Laboratory)"
] | : Microbial metal reduction has the potential for immobilizing toxic metals and radionuclides in diverse environments. Little is known about metal reduction and immobilization under extreme conditions, and only recently bacterial reduction of metals has been demonstrated under extremely alkaline conditions. The objective of this study was to examine metal reduction and mineral formation using an alkaliphilic bacterium, Alkaliphilus metalliredigens (QYMF), isolated from a leachate-pond containing high levels of salt (Na concentration=44012,100 mg/L) and boron (2,0003,000 mg/L) at pH 9.0-10.0. The bacterium was able to use lactate, acetate, and hydrogen as alternative electron donors and Fe(III)-citrate, Fe(III)- ethylenediaminetetraacetate (EDTA), selenate (SeO42-), chromate (CrO42-), and Co(III)-EDTA as electron acceptors at medium pH=9.5. The reduction of Fe(III)-citrate and Fe(III)-EDTA in the presence of K2HPO4 and boron resulted in the precipitation of vivianite [Fe3(PO4)28H2O]. Formation of sparingly soluble iron phosphates, mediated by the alkaliphilic Fe(III)-reducing bacterium, sequestered iron, phosphate, and other metals into more stable and less toxic forms. These results suggest that bioremediation of metal-contaminated alkaline environments may be feasible, and that the process of metal-reduction may occur in alkaline habitats. | 지질학 | null | kci_detailed_000237.xml | |||
ART001218035 | oai_dc | Seasonal and spatial variability of sediment oxygen fluxes in the Beobsan intertidal flat of Taean Bay, mid-western Korean Peninsula | Seasonal and spatial variability of sediment oxygen fluxes in the Beobsan intertidal flat of Taean Bay, mid-western Korean Peninsula | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Kyung Hee Kim(Korea Ocean Research and Development Institute); Dongseon Kim(Korea Ocean Research and Development Institute)"
] | Core incubation and oxygen microelectrode measurements were performed at two stations in the Beobsan intertidal flat of Taean Bay on the mid-western Korean Peninsula. Total and diffusive fluxes were determined for four different seasons (August and October 2006 and February and May 2007). Diffusive oxygen fluxes ranged from 7.62 to 11.4 mmol m-2 d-1 at station S1 and 8.85 to 14.3 mmol m-2 d-1 at station S2. Total oxygen fluxes varied from 20.2 to 27.6 mmol m-2 d-1 at station S1 and from 18.7 to 31.7 mmol m-2 d-1 at station S2. Total oxygen fluxes were 2~3 times higher than diffusive oxygen fluxes, a result that agrees well with previous studies of the coastal and continental shelf area. The difference between the total and diffusive fluxes is caused by the bio-irrigation activities of macrofauna living in the sediments, which enhance the ventilation of the sediment and introduce oxygenated water to the deeper, anoxic sediment layer. The total oxygen flux at station S1 exhibited small seasonal variation while that at station 2 showed large seasonal variation. Organic carbon contents in the surface sediments correlated well with total oxygen flux, suggesting that the input flux of organic matter is a major factor controlling the seasonal variation in total oxygen flux. Annual benthic aerobic respiration rates were determined to be 8.8 and 9.1 mol C m-2 yr-1 at stations S1 and S2, respectively; these values are very similar to estimations for Aarhus Bay, Denmark and the southwestern lagoon of New Caledonia. | 지질학 | null | kci_detailed_000237.xml | |||
ART001218033 | oai_dc | Furongian trilobites from the Asioptychaspis and Quadraticephalus zones of the Hwajeol Formation, Taebaeksan Basin, Korea | Furongian trilobites from the Asioptychaspis and Quadraticephalus zones of the Hwajeol Formation, Taebaeksan Basin, Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jang Won Sohn(서울대학교); Duck K. Choi(서울대학교)"
] | This paper describes the upper Furongian trilobites from the Hwajeol Formation and, based on these trilobite faunal assemblages, proposes formally two trilobite biozones, the Asioptychaspis and Quadraticephalus zones. A total of 14 species belonging to ten genera are described: i.e., Micragnostus sp., Pseudagnostus planulatus, Koldinioidia sp., Hamashania pulchera, Hamashania sp. cf. H. busiris, Asioptychaspis subglobosa, Changia sp., Quadraticephalus elongatus, ptychaspidid genus and species indeterminate, Lophosaukia orientalis, Lophosaukia? sp., Tsinania canens, Tsinania sp., and Haniwa sosanensis. The Asioptychaspis Zone is characterized by predominance of Asioptychaspis subglobosa, while the succeeding Quadraticephalus Zone is dominated by Quadraticephalus elongatus, Lophosaukia orientalis, Haniwa sosanensis, and Micragnostus sp. The Asioptychaspis and Quadraticephalus zones are well correlated with the Ptychaspis-Tsinania and Changia (or Quadraticephalus) zones of North China, respectively. These two trilobite assemblages of the Hwajeol Formation support a strong paleogeographical link between the Taebaeksan Basin and North China Platform during the late Furongian. | 지질학 | null | kci_detailed_000237.xml | |||
ART001218030 | oai_dc | Hf isotopic evidence for Paleoarchean (> 3.5 Ga) crustal components in the Korean Peninsula | Hf isotopic evidence for Paleoarchean (> 3.5 Ga) crustal components in the Korean Peninsula | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"이승렬(한국지질자원연구원); 조등룡(한국지질자원연구원); Moonsup Cho(서울대학교); Fu-Yuan Wu(Institute of Geology and Geophysics); 김현철(Korea Institute of Geoscience and Mineral Resources); Heejin Jeon(서울대학교)"
] | We report in-situ Hf isotopic data on five inherited zircon components, dated at >3.0Ga from previous Sensitive High Resolution Ion Microprobe (SHRIMP) U-Pb analyses. These data are useful for constraining the timing and nature of very pristine crustal materials in South Korea. 176Hf/177Hf isotope ratios, measured using a laser ablation Multi-collector Induced Coupled Plasma Mass Spectrometer (MC-ICP MS), range from 0.28044 to 0.28075, corresponding to the present-day Hf(0) of 70 to 81. They yield two-stage Hf model ages of ca. 4.1 to 3.5 Ga at the time of zircon crystallization from a magma, depending on tenable crustal evolution models. Our results provide the first Hf isotopic evidence for existence of Paleoarchean (>3.5 Ga) crustal components in the Korean Peninsula. | 지질학 | null | kci_detailed_000237.xml | |||
ART001047197 | oai_dc | Removal of Ringing Noise in GPR data by Signal Processing | Removal of Ringing Noise in GPR data by Signal Processing | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jung-Ho Kim(Korea Institute of Geoscience and Mineral Resources); Seong-Jun Cho(Korea Institute of Geoscience and Mineral Resources); 이명종(Korea Institute of Geoscience and Mineral Resources)"
] | Ringing is a common type of coherent noise inground penetrating radar (GPR) data. When this kind of coherentnoise is strong and is not properly removed, deeper structure maybe completely masked. Ringing appears as nearly horizontal andperiodic events, which are the most important features enabling usto remove the noise by signal processing. In this study, we haveto remove the ringing noise and compared their performancesusing field GPR data contaminated by severe ringing noise. Thereviewed methods include background removal, f-k filtering, pre-dictive deconvolution with filtering in wavenumber domain, andfiltering by radon transform. Furthermore, it is shown that ring-ing can be sucesfully removed by the eigenimage filteringmethod, where GPR image is decomposed into eigenimages by sin-gular value decomposition. This comparative analysis shows thatthe refined techniques are definitely more effective than the simplemethods for the ringing noise removal with less distortion of GPRtions. Moreover, preservation of the horizontally linear eventsfrom geological targets can be possible only through a kind ofselective or local filtering such as the eigenimage filtering method. | 지질학 | null | kci_detailed_000237.xml | |||
ART001047195 | oai_dc | The 20 January 2007, Mw 4.48, Odaesan, Korea, earthquake | The 20 January 2007, Mw 4.48, Odaesan, Korea, earthquake | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Namdae Jo(서울대학교); Chang-Eob Baag(서울대학교)"
] | Jo, N.-D. and Baag, C.-E., 203, Estimation of spectrum decayparameter κ and stochastic prediction of strong ground motionsin southeastern Korea. Journal of the Earthquake EngineeringSociety of Korea, 7, 5970. (in Korean with English abstract)Junn, J.-G., Jo, N.-D. and Baag, C.-E., 2002, Stochastic prediction ofground motions in southern Korea. Geosciences Journal, 5, 1726.Kang, T.-S. and Baag, C.-E., 2004, The 29 May 2004, Mw=5.1, off-shore Uljin earthquake, Korea. Geosciences Journal, 8, 115123.KIGAM, 2007, http://quake.kigam.re.kr.Kim, W., Kim, S. K. and Baag, C.-E., 206, Optimum design foraccelerograph network and instrumental intensity in South Korea.Technical Report to Korea Meteorological Administration, Pre-pared by Earthquake Engineering Society of Korea, 107 p. (in Korean)Kim, W., 2007, Earthquakes in Stable Continental Region, 1-dayworkshop for seismic observation and analysis Earthquakes in | 지질학 | null | kci_detailed_000237.xml | |||
ART001047193 | oai_dc | Graptolite biostratigraphy and its correlation of the Mungok and Yeonghung formations at Yeongwol area, Korea | Graptolite biostratigraphy and its correlation of the Mungok and Yeonghung formations at Yeongwol area, Korea | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Hyun Su Cho(Korea National University of Education); Jeong Yul Kim(Korea National University of Education)"
] | Based on graptolites from the Mungok and Yeong-hung formations at Yeongwol, Korea and recent taxonomy ongraptolites, the previous three graptolite zones are refined as theAnisograptus matanensis, Adelograptus cf. tenellus, Callograptusspp. zones, and two zones are firstly proposed for the Tremadocianrocks in the area: the Paradelograptus antiquus and Aorograptusvictoriae zones, in ascending order. The Anisograptus matanensisZone yields Anisograptus matanensis indicating an early Tremadocage. The Adelograptus cf. tenellus Zone is erected by the occurrenceof Adelograptus cf. tenellus and Psigraptus jacksoni which repre-sent lowermost Late Tremadocian in age. The Callograptus spp.Zone yielding plenty of dendroids including Callograptus and Den-drograptus, is tentative but useful to correlate with other rocks inthe Sino-Korean Block. The Paradelograptus antiqus Zone is rec-ognized by the occurrence of Paradelograptus antiquus and Clonograp-tus aureus and is correlated with the middle Late Tremadoc ofYukon, Canada. The Aorograptus victoriae Zone consists mainly ofAorograptus victoriae and subordinately of Kiaerograptus and Clonograp-tus and corresponds to the eponymous zones elsewhere. The bound-ary between the Mungok and the Yeonghung formations consistsof ribbon rock and grainstone to packstone facies of the MungokFormation and laminated dolomite, argillaceous limestone, and wack-estone to grainstone facies of the Yeonghung Formation and is drawnwithin the Aorograptus victoriae Zone which indicates middle LateTremadocian. | 지질학 | null | kci_detailed_000237.xml | |||
ART001047194 | oai_dc | Determination of hypocentral parameters of local earthquakes using weighting factor based on take-off angle | Determination of hypocentral parameters of local earthquakes using weighting factor based on take-off angle | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"In Kyeong Hahm(Center for Atmospheric Sciences and Earthquake Research); 김우한(경상대학교); 이정모(경북대학교); Jeong Soo Jeon(Korea Institute of Geoscience and Mineral Resources)"
] | This paper introduces an improved method of deter-mining hypocentral parameters of local earthquakes by applyinga weighting factor based on take-off angle at a source. The hypo-central parameters determined by the existing methods containerors if the true velocity structure is not used, and they are notidentical depending on the velocity models used. Variation in thetraveltime caused by a focal depth may indicate the degree of focaltion wil decrease rapidly as the epicentral distance increases. Thetake-off angle at the source is related to the epicentral distance.Therefore, a weighting factor representing the degree of focal depthinformation could be described in terms of the take-off angle at thesource. The accuracy of hypocentral parameters, especially thefocal depth and the origin time, is improved by applying the take-off angle as the weighting factor and two-point ray tracing to theexisting methods. Synthetic traveltime data both with noise andwithout noise are generated using the two-point ray tracing tech-nique with a model in which velocity structure and hypocentralparameters are known. The effect of the weighting factor is exam-ined by comparing the estimated hypocentral parameters with thetrue, known values. The computational results show that the focaldepth and the origin time estimated by the improved method(MHYPO) in this work are more accurate than those estimated byother existing methods. | 지질학 | null | kci_detailed_000237.xml | |||
ART001047198 | oai_dc | Application of TOUGHREACT to Performance Evaluations of Geothermal Heat Pump Systems | Application of TOUGHREACT to Performance Evaluations of Geothermal Heat Pump Systems | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Yongkoo Seol(Lawrence Berkeley National Laboratory Berkeley); 이강근(서울대학교)"
] | Numerical simulations were performed with a non-isothermal multi-phase reactive geochemical transport code, TOUGH-REACT for predicting changes in temperature, permeability, porosity,and injectivity resulting from a long term operation of a geothermalheat-pump (GHP) system. A one-dimensional model was developedwith down-hole water temperature of 200°C. The GHP systemwas developed for (1) an open-loop system with a set of extractionand injection wels 600 meter apart, and (2) a closed-loop systemwith a heat exchanger. The same ground water was either injectedinto the ground through the injection wel of the open-loop systemor placed in the heat exchanger in the closed-loop system. Injectingwater temperature (65°C or 35°C), pressure (+2MPa or +5MPa),chemical composition, and well casing (stainless steel or PVC) forpermeability and porosity resulting from mineral dissolution orprecipitation on liquid injectivity and heat extractability wereevaluated. The results showed that the impacts of the mineral pre-cipitation on liquid injectivity and heat extractability were moresignificant in the open-loop system than in the closed-loop system.This study also showed the injecting water temperature and welcasing material would not be significant to improve the perfor-mance of a closed-loop GHP system. For the comprehensive eval-uation of a GHP system performance, a system-level modelingconsidering economic and technical aspects was suggested. | 지질학 | null | kci_detailed_000237.xml | |||
ART001047196 | oai_dc | Monitoring of Urban Land Surface Subsidence using PSInSAR | Monitoring of Urban Land Surface Subsidence using PSInSAR | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Jun-su Kim(서울대학교); 김덕진(University of Michigan); 김상완(세종대학교); 원중선(Yonsei University); 문우일(Univ. of Manitoba)"
] | Florence, Mar. 17-20, p. 541544.Sneed, M., Ikehara, M., Balloway, D.L. and Amelung, F., 201, Detec-tion and measurement of land subsidence using global position-ing system and interferometric synthetic aperture radar, CoachelaValey, California 196-1998, Water-Resources InvestigationsReport, 01-4193, US Geological Survey.Tesauro, M., Bererdino, P., Sansosti, E., Fomaro, G. and Fransescheti, G.,2000, Urban subsidence inside the city of Napoli (Italy) observed bysatellite radar interferometry, Geophysical Research Leters, 27,19611964.Wiliams, S., Bock, Y. and Fang, P., 198, Integrated satellite inter-Monitoring of urban land surface subsidence using PSInSAR 73ferometry: Tropospheric noise, GPS estimates and implicationsfor interferometric synthetic aperture radar products, Journal ofGeophysical Research, 103, 2705127067.Write, P. and Stow, R., 19, Detecting mining subsidence form | 지질학 | null | kci_detailed_000237.xml | |||
ART001046979 | oai_dc | Geological age of the Jeongseon Formation, Joseon Supergroup (lower Paleozoic): A perspective from carbon isotope stratigraphy | Geological age of the Jeongseon Formation, Joseon Supergroup (lower Paleozoic): A perspective from carbon isotope stratigraphy | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"홍성경(서울대학교); Yong Il Lee(서울대학교)"
] | Due to the lack of index fossils and extensive alter-ation, the geological age of the Jeongseon Formation, JeongseonUnit of the Joseon Supergroup (lower Paleozoic) is yet clearlydefined by any chronostratigraphic mean. In this study, we presentJeongseon Formation. The carbon isotopic values of the JeongseonFormation fluctuate between -3‰ and +1‰, which are within therange of those of Middle Ordovician carbonate. Also, the δ13Ccurve of the upper part of the Jeongseon Formation is well cor-related with that of the uppermost Midle-lowermost UpperOrdovician Copenhagen Formation in the Great Basin, U.S.A.(Saltzman and Young, 2005). Considering general biostratigraphyand carbon isotope stratigraphy together, the age of the upperpart of the Jeongseon Formation can be assigned to late Middle to | 지질학 | null | kci_detailed_000237.xml | |||
ART001046980 | oai_dc | Diatom evidence for Holocene paleoclimatic change in the South Scotia Sea, West Antarctica | Diatom evidence for Holocene paleoclimatic change in the South Scotia Sea, West Antarctica | {
"journal_name": "한국지질과학협의회",
"publisher": null,
"pub_year": null,
"pub_month": null,
"volume": null,
"issue": null
} | [
"Young-Suk Bak(Chonbuk National University); Kyu-Cheul Yoo(Korea Polar Research Institute); Ho Il Yoon(Korea Polar Research Institute); Jong-Deock Lee(Chonbuk National University); Hyesu Yun(Chungnam National University)"
] | 지질학 | null | kci_detailed_000237.xml |
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