1999年6月広島土砂災害時における豪雨の特性とレーダー雨量情報の意義

概要

論文の詳細を見る
The main cause of the Hiroshima disaster June 1999 is that the heavy rain due to the cold front continued for 2 or 3 hours at the Masa soil belts. Major disasters occurred at the developed mountain area around Hiroshima city and Kure city. This heavy rain appeared in the band with small width over these areas. A radar rain gauge at Mt. Rakan was effective to know the distribution of rainfall and trace the movement of the heavy rain area. In this study, by using the information of this radar rain gage which resolution is higher than one of ground rain gages, it was made clear that the mountainous geographical features and the wind fields affected the deformation of precipitation distribution and the concentration of heavy rain area. The danger of disaster can be predicted by analyzing the amount of the ground water from precipitation distribution measured by radar rain gage and ground rain gages. The effective usage of radar rain gage information was examined for reducing the sudden disasters.
日本自然災害学会の論文
2003-08-31