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Research on critical precipitation amount computation method of mountain torrential flood disaster

CHEN Gui-ya YUAN Ya-ming(Hydrology Bureau of Changjiang Water Resources Commission,Wuhan 430010,China)  
When the precipitation amount in a time interval in a basin or region reaches a certain amount order or intensity,flood disasters,such as mountain torrent,mud-rock flow,landslide etc.,will occur,and the precipitation amount or intensity at this time is known as the critical precipitation amount(intensity) in the basin and region.The critical precipitation amount(intensity) is an index which is of significance for the prevention and treatment of disaster caused by torrential floods.An analysis and calculation method for critical precipitation amount is put forward by using precipitation data from existing hydrological observation network,with precipitation data from meteorological observation network serving as supplementary data.An estimation method for critical precipitation amount in regions with less or no precipitation data is also given.The provided methods have been proved to be feasible through analyzing case histories in typical regions
【Fund】: 全国山洪灾害防治规划专题研究项目“典型区域引发山洪灾害的临界雨强分析”
【CateGory Index】: P426.616
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Chinese Journal Full-text Database 4 Hits
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