強雨の時間変動の統計的構造に関する研究 -地点・毎10分記録の雨量配分率・連解析-

Abstract

An investigation of statistical or stochastic structures of behaviors of heavy rainfalls would beimportant in the meaning that the knowledge about them could be scientific criterions in planningor execution of preventive measures against disasters to be caused by heavy rainfalls.This study is a part of such an investigation, and takes up the structures of 10-minutely vari-ation of intensities of heavy rainfalls, aiming at their application to problems about mud-debrisflow or abrupt landslide. Two kinds of analyses, I.e., the distribution-rate analysis and the runanalysis were adopted to the data obtained for about 20 years at the four points in the ShikokuDistrict, classified into two groups at each point by the meteorological causes (typhoon and theothers), and also considering levels of rainfall intensities.The differences in the structural properties of them, between mountain and lowland, betweentyphoon and the other causes, and between high and low intensities, were nearly grasped.