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
広島大学大学院工学研究科研究報告 Volume 53 Issue 1
Page 53-62
published_at 2004-12
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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
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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'
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Creator |
Nakai Shinji
Sasaki Yasushi
Moriwaki Takeo
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Source Title |
広島大学大学院工学研究科研究報告
Graduate School of Engineering, Hiroshima University
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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.
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Keywords |
Effective Rainfall
Preceding Rainfall
Rainfall Index
Preceding Rainfall
Warning and Evacuation
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NDC |
Earth sciences. Geology [ 450 ]
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Language |
jpn
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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
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Date of Issued | 2004-12 |
Publish Type | Version of Record |
Access Rights | open access |
Source Identifier |
[ISSN] 1347-7218
[NCID] AA11700032
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