Research and application of flood damage evaluation information system
(1.Department of Surveying Enineering, Liaoning Technical University, Fuxin, 123000, China2.Tongji University, Shanghai 200092, China3.Liaoning Technical University, Fuxin 123000, China)
Abstract: The fast evaluation method of flood damages was explored with the combination of high technologies, such as remote sensing (RS) and geographic information system (GIS), namely the land classification and extraction of flood areas were accomplished in RS image processing software, ENVI, the flood damages information system, digital terrain model and flood damages evaluation information system were developed on GIS platform GeoMedia. The problem of the combination of multi-source data was addressed, furthermore, the problems of how to build the flood damages evaluation model and the inundating elevation model were deeply probed, the calculating formulas were also given. Case study result shows that the evaluation models are correct and data are reliable, we can use it to evaluate real-time flood damages and provide evidences for decision-making of leaders, moreover, it is of great instructive significance to the research of flood damages evaluation theories.
Key words: flood damages； GIS； remote sensing； digital terrain model； evaluation