期刊
NATURAL HAZARDS
卷 112, 期 3, 页码 2385-2401出版社
SPRINGER
DOI: 10.1007/s11069-022-05270-6
关键词
Inundation mapping; Floods; DEM; Flood recurrence
New methods allow direct computation of flood inundation maps from lidar data without the need for discharge estimates, hydraulic analysis, or defined cross sections. These maps facilitate data-based planning due to their conceptual simplicity and realism.
New methods allow the direct computation of flood inundation maps from lidar data, independently of discharge estimates, hydraulic analysis, or defined cross sections. One method projects the interpolated profile of measured flood levels onto surrounding topography, creating a smooth inundation surface that is entirely based on data and geometrical relationships. A second method computes inundation maps for any simple function that relates the water surface to the elevation of the channel bottom, exploiting their known, sub-parallel character. A final method theoretically combines the elevation of the channel bottom and the upstream catchment area for points along the thalweg, all defined by lidar data. Historical data from stream gauges can be incorporated to generate inundation maps for floods having different return periods. The conceptual simplicity and realism of these maps facilitate data-based planning.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据