Study on developing process of water channel by landslide dam overtopping erosion
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- YOSHINO Kosuke
- Asia Air Survey Co., Ltd.
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- UCHIDA Taro
- National Institute for Land and Infrastructure Management, Ministry of Land, Infrastructure and Transport and Tourism
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- ISHIZUKA Tadanori
- Public Works Research Institute.
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- MIZUYAMA Takahisa
- Graduate School of Agriculture, Kyoto University
Bibliographic Information
- Other Title
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- 天然ダム越流侵食時に形成される水みちの発達過程に関する研究
- テンネン ダムエツリュウ シンショクジ ニ ケイセイ サレル ミズミチ ノ ハッタツ カテイ ニ カンスル ケンキュウ
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Description
Earthquakes and heavy rainfall result in the formation of landslide dams following a massive collapse or landslide. Clarifying geomorphic changes to landslide dams following overtopping is important for mitigation of future disasters. However, past modeling experiments have not provided adequate information about geomorphic changes at landslide dams in actual scale. Recently, detailed geomorphic data before and after the landslide dam overtopping erosion by LiDAR was acquired, and it came to be able to understand the detailed shape of the water channel that has been caused along with the erosion. Therefore, we used aerial photographs, and LiDAR data sets to analyze the geomorphic changes of some landslide dams formed during the 2004 Chuetsu earthquake, the 2008 Iwate and Miyagi inland earthquake and so on. In this study, we also presented new method for describing geomorphic change of water channel. We used slope stability analysis for slope collapse at side slope of water channel. Then, we verified this method with the LiDAR data sets.
Journal
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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 66 (2), 3-9, 2013
Japan Society of Erosion Control Engineering
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Details 詳細情報について
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- CRID
- 1390001205480004992
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- NII Article ID
- 10031188193
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- NII Book ID
- AN0012035X
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- ISSN
- 21874654
- 02868385
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- NDL BIB ID
- 024805549
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
- Crossref
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- Abstract License Flag
- Disallowed