Visualization and Damage Assessment for Flooded Area地球空间信息科学学报：英文版论文
【题名】：Visualization and Damage Assessment for Flooded Area地球空间信息科学学报：英文版论文(Visualization and Damage Assessment for Flooded AreaDiQiuKongJianXinXiKeXueXueBao：YingWenBanLunWen) 【关键词】：水灾地区 灾害评估 “seed spread algorithm” 种子传播算法 GIS 地球信息系统 自运行程序 【keywords】：ShuiZaiDiQu ZaiHaiPingGu “seed spread algorithm” ZhongZiChuanBoSuanFa GIS DiQiuXinXiXiTong ZiYunXingChengXu 【作者】：SUGuozhong,YANLi,LIUNan,LIURenyi,      【来源】： 知识词典 【期刊名称】：地球空间信息科学学报：英文版(DiQiuKongJianXinXiKeXueXueBao：YingWenBan) 【国际标准刊号】：1009-5020        【国内统一刊号】：42-1610/P 【作者单位】：[1]SchoolofRemoteSensingandInformationEngineering,WuhanUniversity,129LuoyuRoad,Wuhan430079,China [2]不详([1]SchoolofRemoteSensingandInformationEngineering,WuhanUniversity,129LuoyuRoad,Wuhan430079,China [2]BuXiang) 【分类号】：X4 P208      【页码】：-180-186      【出版年】：2004.3         A practical method for visualizing flood area and evaluating damage is presented, which consists of two technical approaches: self-programming and adapting commercial GIS platforms. The low-cost and easy-to-use GIS-Based model developed by self-programming can meet current requirements of most local authorities, especially in developing countries. In this model, two cases, non-source flood and source flood, are distinguished and the Seed-spread algorithm suitable for source-flood is discussed; The flood damage is assessed by overlaying the flood area range with thematic maps and other related social and economic data. and all the-matic maps are converted to raster format before overlay analysis. Two measures are taken to improve the operation efficiency of speed seed-spread algorithm. The accuracy of the model mainly depends on the resolution and precision of the DEM data, and the accuracy of registering all raster layers and the quality of attribute data.
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