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《Geography and Geo-Information Science》 2005-03
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An Algorithm for Inundated Depth Calculation of Flood Based on Remotely Sensed Data

YI Yong-hong,CHEN Xiu-wan,WU Huan(Institute of Remote Sensing and GIS,Peking University,Beijing 100871,China)  
The paper puts forward an algorithm to calculate the depth distribution within the inundated region extracted from the satellite imagery,which can be applied in the flood monitoring and loss evaluation.The algorithm combines the flood region with DEM and acquires a smooth elevation distribution in the flood borderlines after efficient error control due to inadequate precision in the satellite imagery processing and DEM itself.After assuming floodwater in the flood area to be an inclining plane,the depth distribution within the boundaries can be computed using a bilinear interpolation algorithm.The result in the test site shows the algorithm can meet the requirement of the flood loss estimation both in precision and computing speed.
【Fund】: 中意国际合作资助项目"洪水风险规划、监测和实时预报集成系统"
【CateGory Index】: P331.1
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