---
license: cc-by-4.0
task_categories:
  - other
language:
  - en
tags:
  - seismic
  - structural-engineering
  - ground-motion
  - hdf5
  - time-series
pretty_name: KNET Seismic Ground Motion & Building Response Dataset (MDOF)
size_categories:
  - 10M<n<100M
---

# KNET Seismic Ground Motion & Building Response Dataset (MDOF)

Ground motion records from the K-NET strong-motion network (Japan), paired with numerically simulated floor acceleration responses for 250 multi-degree-of-freedom (MDOF) shear-building configurations. Used to train and evaluate Fourier Neural Operator (FNO) models for seismic structural response prediction.

## Dataset Summary

| Property | Value |
|----------|-------|
| Ground motion records | 3,474 (K-NET) |
| Amplitude scale factors per GM | 57 |
| Building configurations | 250 MDOF shear buildings |
| Signal length | 3,000 time steps (60 s @ 50 Hz) |
| GM file format | HDF5 (`.h5`) |
| Building response format | HDF5 (`.h5`), one file per building |

## File Structure

```
MDOF/
├── All_GMs/
│   └── GMs_knet_3474_AF_57.h5        # Ground motion inputs
└── knet-250/
    └── Data/
        └── fno/
            ├── Blg_F6_18m_IM7_st0.h5.h5       # Floor acc. response
```

### Ground Motion File (`GMs_knet_3474_AF_57.h5`)

Each entry stores the scaled acceleration time series for one GM × scale-factor combination.

| HDF5 Key pattern | Shape | Description |
|-----------------|-------|-------------|
| `gm_{i}/af_{j}/data` | `(3000,)` | Scaled acceleration (m/s²), 50 Hz |
| `gm_{i}/af_{j}/pga` | scalar | Peak ground acceleration (m/s²) |
| `gm_{i}/metadata` | attrs | Station, event, magnitude, etc. |

### Building Response Files (`Blg_F6_18m_IM7_st0.h5.h5`)

Each file stores the simulated structural response for all GM × scale combinations for one building.

| HDF5 Key | Shape | Description |
|----------|-------|-------------|
| `response/gm_{i}/af_{j}/floor_acc` | `(n_floors, 3000)` | Floor acceleration (m/s²) |
| `building/attributes` | attrs | Number of floors, periods, damping, etc. |
| `building/damage_state/gm_{i}/af_{j}` | scalar int | HAZUS damage state (0–4) |

## Loading

Refer to github repo and codes.

## License

[Creative Commons Attribution 4.0 (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/)