Datasets:
Upload README.md with huggingface_hub
Browse files
README.md
ADDED
|
@@ -0,0 +1,43 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
---
|
| 2 |
+
license: cc-by-4.0
|
| 3 |
+
task_categories:
|
| 4 |
+
- image-to-image
|
| 5 |
+
tags:
|
| 6 |
+
- oceanography
|
| 7 |
+
- wave-spectrum
|
| 8 |
+
- wind-sea-swell
|
| 9 |
+
- wave-age
|
| 10 |
+
- directional-spectrum
|
| 11 |
+
---
|
| 12 |
+
|
| 13 |
+
# ATLAS-WDS-v2: Wave Directional Spectrum + Wind Field Dataset
|
| 14 |
+
|
| 15 |
+
海浪方向谱 + 风场融合数据集. 每条样本同时含 **MEM / Fourier 两种重建方向谱**、
|
| 16 |
+
**真实 UTC 时间**、**同站同时刻风场 (u10, wdir)**、**逐点波龄判据 W(f,θ)**。
|
| 17 |
+
|
| 18 |
+
## 字段
|
| 19 |
+
- `energy_mem`, `energy_fourier`: 展平的 47×72 方向谱 (固定均匀频率网格 0.02–0.5 Hz)
|
| 20 |
+
- `freqs_real`: 该样本的真实非均匀频率轴 (47,), 用于波龄判据相速计算
|
| 21 |
+
- `timestamp_utc`, `station`, `lat`, `lon`
|
| 22 |
+
- `has_wind`: 是否成功匹配到风场
|
| 23 |
+
- `u10` (m/s), `wdir` (deg true, FROM): 风速/风向 (has_wind=False 时为 NaN)
|
| 24 |
+
- `wave_age_map`: 展平的 W(f,θ)=1.2·(u10/c_p)·cos(θ−ψ), c_p=g/(2πf) (无风场为 NaN)
|
| 25 |
+
- `windsea_mask`: W>1 风浪区掩码
|
| 26 |
+
- `Hs`, `Tp`, `Dp`, `total_energy`: 由 MEM 谱积分得到
|
| 27 |
+
- `source`: ndbc_text / dods / cdip
|
| 28 |
+
|
| 29 |
+
## 加载
|
| 30 |
+
```python
|
| 31 |
+
from datasets import load_dataset
|
| 32 |
+
import numpy as np
|
| 33 |
+
ds = load_dataset("wuff-mann/ATLAS-WDS-v2", split="train")
|
| 34 |
+
s = ds[0]
|
| 35 |
+
E = np.array(s["energy_mem"], np.float32).reshape(s["n_freqs"], s["n_dirs"])
|
| 36 |
+
W = np.array(s["wave_age_map"], np.float32).reshape(s["n_freqs"], s["n_dirs"])
|
| 37 |
+
# 纯谱版: 用全量; 风场版: ds.filter(lambda x: x["has_wind"])
|
| 38 |
+
```
|
| 39 |
+
|
| 40 |
+
## 对照实验设计
|
| 41 |
+
- 纯谱基线: 全量, 忽略风场列
|
| 42 |
+
- 风场版: `has_wind=True` 子集, 用 `wave_age_map` 做强监督正则
|
| 43 |
+
- MEM vs Fourier: 同一批样本两种方向谱, 比较分割效果
|