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ID 17776
file
title alternative
Improvement of Rainfall Index for Warning and Evacuation against Sediment-Related Disaster : Reexamination of the Rainfall Index R_f, and the Proposal of R'
creator
Nakai, Shinji
Sasaki, Yasushi
Moriwaki, Takeo
subject
Effective Rainfall
Preceding Rainfall
Rainfall Index
Preceding Rainfall
Warning and Evacuation
NDC
Earth sciences. Geology
abstract
Proper warning and evacuation are considered to be essential for mitigating sediment-related disaster during a heavy rainfall. For this purpose, scientific and rational rainfall index should be established in accord with the regional geology and topography. A new Rainfall Index, named R', is proposed through the revision of Rainfall Index R_f. Effect of preceding rainfall prior to a sediment-related disaster is taken into account for this newly proposed Rainfall Index R' by utilizing the concept of the effective rainfall. Rainfall records during the serious disaster happened to take place on 29 June, 1999 and 15 September, 1999 in Hiroshima district were taken as the cases to verify the effectiveness of this newly proposed Rainfall Index. As a result of the comparison between R_f and R', it was shown that R' is superior to judge the danger of sediment disaster for identifying an area and time from on-going rainfall.
journal title
Graduate School of Engineering, Hiroshima University
volume
Volume 53
issue
Issue 1
start page
53
end page
62
date of issued
2004-12
publisher
広島大学大学院工学研究科
国立情報学研究所
issn
1347-7218
ncid
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Engineering
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