著者

塩月 善晴 大原 資生 山本 哲朗

出版者

公益社団法人 土木学会

雑誌

土木学会論文集

巻号頁・発行日

vol.1987, no.381, pp.83-90, 1987

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Ochi (1973) proposed the heavy rain classes according to their damages by use of the maximum 3 hour and 1 hour rainfall amounts in the rainfall. This means that the parameters of maximum rainfall intensity curve (<i>R_T</i> curve) can determine the class in which the present rain is. In this paper the parameters <i>a</i>, <i>b</i> of Talbot type <i>R_T</i> curve determined by the six 10min rainfall data within an hour are used to make diagnosis how the present rain ranks in the rain classes and if it will be a heavy rain. Analytical results in two heavy rain cases (Nagasaki, 1982 and Yamaguchi, 1985) show the heavy rain can be detected several ten minutes before its real beginning.