Sediment supply processes from large-scale landslides
Project/Area Number |
24780141
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Forest science
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Research Institution | Shizuoka University |
Principal Investigator |
IMAIZUMI Fumitoshi 静岡大学, (連合)農学研究科(研究院), 准教授 (80378918)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | 大規模崩壊地 / 土砂生産 / 凍結融解 / 崩壊 / レーザー測量 / 砂泥互層 / 大規模崩壊 / 地形計測 / 付加体 |
Outline of Final Research Achievements |
Large scale landslides continuously supply sediment after their initial failure. In this study, we investigated timing and volume of sediment supply by field surveys and GIS (Geographic Information System) analyses. Sediment supply from hillslopes were composed of multiple sediment supply processes, including chronic weathering of the bedrock and episodic slope failure expanding the landslide. Spatial activities of these processes were highly affected by the geological structure in the landslide. We successfully explained sediment supply processes by "parallel retreat model" and "slope stability model for the slopes with multi-layer geoligical structure."
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Report
(4 results)
Research Products
(30 results)
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[Journal Article] Influence of past landslides and resulting sedimentation in a sediment disaster at Shao-ling village, Taiwan, during Typhoon Morakot, 20092013
Author(s)
Hotta, N., Kubo, T., Imaizumi, F., Miyamoto, K., Lee, S.P., Tsai, Y.L.,Shieh, C.L.
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Journal Title
Proceedings of 4th International Workshop on Multimodal Sediment Disasters
Volume: 1
Pages: 117-124
Related Report
Peer Reviewed
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[Presentation] Interactions between accumulation conditions of sediment storage and debris flow characteristics in a debris-flow initiation zone in Ohya landslide, Japan2015
Author(s)
Imaizumi, F., Hayakawa, Y.S., Hotta, N., Tsunetaka, H., Tsuchiya, S., Ohsaka, O.
Organizer
EGU General Assembly 2015
Place of Presentation
Austria Center Vienna(Vienna, Austria)
Year and Date
2015-04-12 – 2015-04-17
Related Report
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[Presentation] Interaction between riverbed condition and characteristics of debris flow in Ichino-sawa subwatershed of Ohya-kuzure landslide, Japan2015
Author(s)
Tsunetaka, H., Hotta, N., Imaizumi, F., Hayakawa, Y. S., Yumen, N.
Organizer
EGU General Assembly 2015
Place of Presentation
Austria Center Vienna(Vienna, Austria)
Year and Date
2015-04-12 – 2015-04-17
Related Report
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[Presentation] LiDAR monitoring of retrogressive processes on the steep rockslope of a large landslide in the Japanese Alps2012
Author(s)
Nishii, R., Imaizumi, F., Murakami, W., Daimaru, H., Miyamae, T., Ogawa, Y.
Organizer
EGU General Assembly 2012
Place of Presentation
Austria Center Vienna (Vienna)
Related Report
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