警戒・避難のための雨量指標の改良 : 危険雨量指標R_fの再吟味とR'の提案

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Title ( jpn )
警戒・避難のための雨量指標の改良 : 危険雨量指標R_fの再吟味とR'の提案
Title ( eng )
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
Source Title
広島大学大学院工学研究科研究報告
Graduate School of Engineering, Hiroshima University
Volume 53
Issue 1
Start Page 53
End Page 62
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.
Keywords
Effective Rainfall
Preceding Rainfall
Rainfall Index
Preceding Rainfall
Warning and Evacuation
NDC
Earth sciences. Geology [ 450 ]
Language
jpn
Resource Type departmental bulletin paper
Publisher
広島大学大学院工学研究科
国立情報学研究所
Date of Issued 2004-12
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 1347-7218
[NCID] AA11700032