![]() Based on hydrological inundation mechanism and topographic information, the coarse-resolution flood map derived from water fraction values was then downscaled to a high spatial resolution of 10 m. Water fraction values were calculated to create a 15 km flood map from multiple channels of the Advanced Technology Microwave Sound dataset. In this study, a combined Digital Elevation Model (DEM) based water fraction (DWF) method was implemented to simulate coastal floods during Hurricane Harvey on the South Texas coast. A quick and accurate estimation of coastal flood extent is urgently required for disaster rescue and emergency response. Hurricane-induced coastal floods are often the biggest threat to life and the coastal environment. Tropical cyclones are incredibly destructive and deadly, inflicting immense losses to coastal properties and infrastructure.
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