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Analysis on Characteristics of Sediment Produce by Landslide in a Basin 2. Rainfall Event-based Analysis  

Yoo, Chul-Sang (고려대학교 공과대학 건축.사회환경공학과)
Kim, Kee-Wook (아팔라치안 주립대학 지질학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.10, no.3, 2010 , pp. 147-154 More about this Journal
Abstract
This study analyzed the characteristics of sediment produce by landslide triggered by rainfall. One-dimensional unsaturated groundwater model and infinite slope stability analysis were used to estimate the behavior of soil moisture and slope stability according to rainfall, respectively. Slope stability analysis was performed considering on soil depth and characteristics of trees. The results of the analysis on characteristics of sediment produce according to rainfall events showed that the sediment produce by landslide was mainly contributed to rainfall intensity and its temporal clustering. The results of the analysis on characteristics of sediment produce by extreme events showed that remaining rainfall amount of typhoon 'Rusa' was much more than that of the other extreme events, and thus this remaining rainfall was to contribute to sediment transportation. Additionally, only a small number of extreme events were found to cause most amount of sediment produce in a basin.
Keywords
landslide; characteristics of sediment produce; one-dimensional unsaturated groundwater modeling; slope stability analysis; extreme rainfall;
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Times Cited By KSCI : 2  (Citation Analysis)
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