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| HEC-RAS× | 归一化植被指数× | |
|---|---|---|
| 领域 | 地球物理学 | 地球物理学 |
| 方法族 | Process / pipeline | Process / pipeline |
| 起源年份≠ | 1995 | 1973 |
| 提出者≠ | US Army Corps of Engineers Hydrologic Engineering Center | Rouse, Haas, Schell, and Deering |
| 类型≠ | 1D/2D river hydraulics and flood inundation modeling | Spectral index for vegetation assessment |
| 开创性文献≠ | Brunner, G. W. (2010). HEC-RAS river analysis system hydraulic reference manual. US Army Corps of Engineers Hydrologic Engineering Center. link ↗ | Rouse, J. W., Haas, R. H., Schell, J. A., & Deering, D. W. (1973). Monitoring vegetation systems in the Great Plains with ERTS. Third Earth Resources Technology Satellite Symposium Proceedings, 1, 309-317. link ↗ |
| 别名 | HEC-RAS | NDVI |
| 相关 | 3 | 3 |
| 摘要≠ | HEC-RAS (Hydrologic Engineering Center River Analysis System) is a hydraulic modeling software developed by the US Army Corps of Engineers that computes water surface elevation and velocity in open channels and floodplains, and depicts inundation extent and depth. Since its introduction in 1995, HEC-RAS has become the de facto standard for floodplain delineation, dam break analysis, and flood risk assessment for regulatory and engineering purposes. | The Normalized Difference Vegetation Index (NDVI) is a spectral index computed from satellite or aerial multispectral imagery that quantifies vegetation greenness and vigor. Introduced by Rouse and colleagues in 1973 using Landsat data, NDVI has become the most widely used remote sensing metric for vegetation monitoring, drought assessment, crop productivity forecasting, and land cover change detection. |
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