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- 小杉 賢一朗
- 京都大学大学院農学研究科 (独)科学技術振興機構
書誌事項
- タイトル別名
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- Evaluation of storm events triggering slope failures
- シャメン ホウカイ ノ ユウイン ト ナッタ コウウ ノ ヒョウカ シュホウ
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抄録
This study introduces a new method for evaluating storm events which triggered slope failures, by using antecedent precipitation indices (APIs). The method uses novel one-dimensional and two-dimensional diagrams, which examine excesses of APIs over their past maxima. While each of APIs with various half-life times(HLTs)is examined in the one-dimensional diagram, the two-dimensional diagram evaluates each pair of APIs with various HLTs. The method was applied to 5sediment disasters, and results indicated that the method could detect excesses of APIs over their past maxima at occurrences of slope failures for all disasters except for Maniwa disaster. Especially, the two-dimensional diagram was thought to be effective because it can detect anomaly in rainfall more credibly than the widely-used warning systems which use hourly rainfall, water storages in a tank model, and APIs with HLTs of 72 and 1.5h, as rainfall indices. For Maniwa disaster, some slope failures occurred before excesses of APIs were detected by the proposed method. This indicated increases in slope failure vulnerabilities in the region which suffered from treewindfall disasters.
収録刊行物
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- Journal of the Japan Society of Erosion Control Engineering
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Journal of the Japan Society of Erosion Control Engineering 67 (5), 12-23, 2015
公益社団法人 砂防学会
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詳細情報 詳細情報について
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- CRID
- 1390282680458698880
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- NII論文ID
- 130005172424
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- NII書誌ID
- AN0012035X
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- ISSN
- 21874654
- 02868385
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- NDL書誌ID
- 026052160
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可