Vol.6-2
 

豪雨の集中度に関する研究
-昭和57年7月豪雨の1時間雨量の面的集中度特性について-
Study on Concentration of Heavy Rainfall
-Areal Concentration of One-hour-rainfall in Case of the Heavy Rainfall on July l982-

松田 誠祐*
Seisuke MATSUDA*

 

Abstract
 In this study author defined centrl concentration of hravy rainfall by utilizing the DA-curve formula which describes the characteristics of areal concentration of heavy rainfall and studied some charateristics of concentration of one-hour-rainfall of the Heavy Rainfall on July 1982. K, central concectration factor of areal distribution of the rainfall is given by K≒Iog(P0/Pm). Parameter n which represents concentration around the center of the rainfall is celculated by
  n=(log[1-{log(P/Pm)}/K])/log(A/Am)
where, P, P0 and average rainfall amount on the area A and at the peak point and on the typical area Am respectively(0.1≦A/Am≦0.7).

【キーワード】:集中豪雨, 集中度, DA解析


*高知大学農学部
Faculty of Agriculture, Kochi Univ.


日本自然災害学会