レーダ雨量を用いたＤＡＤ解析と集中豪雨の発生頻度分析

抄録

Recently flooding damages in floodplain occur frequency by heavy rain. The feature of heavy rain is to occur anywhere and anytime. There make possible to arise heavy rain above designated one, such as occurring heavy rain in other basin. In this study, larder precipitation, which can obtain space-time distribution of rain fall area, had been used in order to sample precipitation in defined area. We estimated frequency analysis of heavy rain fall with hydrological statistics. Precipitation as return period 100- 200years is accordance with maximum precipitation that are picked up in area. Moreover we supposed measure of flood risk management for excess flood.