Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR020917 |
Validation of a 30 m resolution flood hazard model of the conterminous United States | |
Wing, Oliver E. J.1,2; Bates, Paul D.1,2; Sampson, Christopher C.1,2; Smith, Andrew M.1,2; Johnson, Kris A.3; Erickson, Tyler A.4 | |
2017-09-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | England; USA |
英文摘要 | This paper reports the development of a similar to 30 m resolution two-dimensional hydrodynamic model of the conterminous U.S. using only publicly available data. The model employs a highly efficient numerical solution of the local inertial form of the shallow water equations which simulates fluvial flooding in catchments down to 50 km(2) and pluvial flooding in all catchments. Importantly, we use the U.S. Geological Survey (USGS) National Elevation Dataset to determine topography; the U.S. Army Corps of Engineers National Levee Dataset to explicitly represent known flood defenses; and global regionalized flood frequency analysis to characterize return period flows and rainfalls. We validate these simulations against the complete catalogue of Federal Emergency Management Agency (FEMA) Special Flood Hazard Area (SFHA) maps and detailed local hydraulic models developed by the USGS. Where the FEMA SFHAs are based on high-quality local models, the continental-scale model attains a hit rate of 86%. This correspondence improves in temperate areas and for basins above 400 km(2). Against the higher quality USGS data, the average hit rate reaches 92% for the 1 in 100 year flood, and 90% for all flood return periods. Given typical hydraulic modeling uncertainties in the FEMA maps and USGS model outputs (e.g., errors in estimating return period flows), it is probable that the continental-scale model can replicate both to within error. The results show that continental-scale models may now offer sufficient rigor to inform some decision-making needs with dramatically lower cost and greater coverage than approaches based on a patchwork of local studies. |
英文关键词 | flooding USA validation large-scale modeling hydraulic |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413484200027 |
WOS关键词 | SHALLOW-WATER EQUATIONS ; ANISOTROPIC POROSITY ; SURFACE-WATER ; GLOBAL-SCALE ; FRAMEWORK ; RADAR ; HAND |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21495 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Bristol, Sch Geog Sci, Bristol, Avon, England; 2.Stn Approach, Fathom, Engine Shed, Bristol, Avon, England; 3.Nature Conservancy, Minneapolis, MN USA; 4.Google Inc, Mountain View, CA USA |
推荐引用方式 GB/T 7714 | Wing, Oliver E. J.,Bates, Paul D.,Sampson, Christopher C.,et al. Validation of a 30 m resolution flood hazard model of the conterminous United States[J]. WATER RESOURCES RESEARCH,2017,53(9). |
APA | Wing, Oliver E. J.,Bates, Paul D.,Sampson, Christopher C.,Smith, Andrew M.,Johnson, Kris A.,&Erickson, Tyler A..(2017).Validation of a 30 m resolution flood hazard model of the conterminous United States.WATER RESOURCES RESEARCH,53(9). |
MLA | Wing, Oliver E. J.,et al."Validation of a 30 m resolution flood hazard model of the conterminous United States".WATER RESOURCES RESEARCH 53.9(2017). |
条目包含的文件 | 条目无相关文件。 |
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