期刊
GEOSCIENCES
卷 8, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/geosciences8120450
关键词
coastal flooding; wave overtopping; infrastructure; overland flow; compound flooding; multi-pathway flooding
资金
- US Army Corps of Engineers [W912HZ-14-2-0025]
- California Department of Parks and Recreation, Division of Boating and Waterways Oceanography Program [C1670006]
Coastal flooding is a significant and increasing hazard. There are multiple drivers including rising coastal water levels, more intense hydrologic inputs, shoaling groundwater and urbanization. Accurate coastal flood event prediction poses numerous challenges: representing boundary conditions, depicting terrain and hydraulic infrastructure, integrating spatially and temporally variable overtopping flows, routing overland flows and incorporating hydrologic signals. Tremendous advances in geospatial data quality, numerical modeling and overtopping estimation have significantly improved flood prediction; however, risk assessments do not typically consider the co-occurrence of multiple flooding pathways. Compound flooding refers to the combined effects of marine and hydrologic processes. Alternatively, multiple flooding source-receptor pathways (e.g., groundwater-surface water, overtopping-overflow, surface-sewer flow) may simultaneously amplify coastal hazard and vulnerability. Currently, there is no integrated framework considering compound and multi-pathway flooding processes in a unified approach. State-of-the-art urban coastal flood modeling methods and research directions critical to developing an integrated framework for explicitly resolving multiple flooding pathways are presented.
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