ID 52164
JaLCDOI
タイトル(別表記)
Debris avalanche occurred in Kitamura area, Kurashiki City, Okayama Prefecture
フルテキストURL
著者
木村 裕貴 岡山大学理学部地球科学科
鈴木 茂之 岡山大学理学部地球科学科
抄録
The debris avalanche occurred in Kitamura area, Kurashiki City, Okayama Prefecture caused by the hard rain of Typhoon 12 of September, 2011. Furthermore, 11 small landslides occurred in the study area. In this area, the altitude of mountainous are not so high (150m to 250m) and the amount of precipitation which producted the debris avalanche was not very serious quantity with 230mm. However the debris avalanche occurred. One private house collapsed, and the first floor part of the Kitamura Elementary School was buried due to the debris flow. The purpose of this study is to examine causes of the debris avalanche disaster occurred in Kitamura area using applied geological technique. The length of the debris avalanche scar is about 250m, and alluvial fan is formed as a debris slope. The ground is composed of weathered granite and the bottom of the valley was filled by soils derived from disintegrated granite. There are three small landslides as head scarps with steep slopes at approximately 30°-35°. The debris avalanche was inferred to have started as a shallow soil slip at the head by rainfall. 3 major causes are inferred which originated the debris avalanche in the study area; steep slope, ground composed of weathered granite, existence of sandy soil which occupied at the bottom of valley.
キーワード
debris avalanche
steep slope
weathered granite
出版物タイトル
Okayama University Earth Science Report
発行日
2013-12-27
20巻
1号
出版者
岡山大学理学部地球科学教室
出版者(別表記)
Department of Earth Sciences, Faculty of Science, Okayama University
開始ページ
1
終了ページ
6
ISSN
1340-7414
NCID
AN10506284
資料タイプ
紀要論文
OAI-PMH Set
岡山大学
言語
Japanese
著作権者
© 2013 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
論文のバージョン
publisher
査読
無し
NAID
Sort Key
3
Eprints Journal Name
esr
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