A Case Study of the Relationship between Real Time Drawing of Rainfall Index R’ Calculated Using AMeDAS Data and Sediment-Related Disasters Occurred in July 2018 in SW Japans

Yoshidomi Kenichi

広島大学大学院人間社会科学研究科紀要. 教育学研究

Bulletin of the Graduate School of Humanities and Social Sciences, Hiroshima University. Studies in education

[ISSN] 2436-0333

[NCID] AA12909086

In order to predict the site at risk for the occurrence of sediment-related disaster, the author has developed a system in which the value of rainfall index R’ can automatically be calculated and the calculated results are represented as a contour map with interpolated information between AMeDAS stations. Verifying whether the R’ value that calculated in real time using only AMeDAS data has a correlation with the timing and the place of sediment-related disasters occurred caused by the heavy rainfall in July, 2018, it was shown that the contour map of R’ value is sufficiently effective for the prediction of“ time” and“ place” where sediment-related disasters would occur. Under existing circumstances, however, from the viewpoint of the guideline of evacuation, it should be emphasized that we have only a few minutes to judge the danger of landslide disaster on the basis of R’ value alone..

Rainfall Index R’

Real time

Contour Map

AMeDAS

July 2018

eng

広島大学大学院人間社会科学研究科

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[ISSN] 2436-0333

[NCID] AA12909086