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Rainfall Intensity-Duration Thresholds for the Initiation of a Shallow Landslide in South Korea  

Kim, Suk-Woo (Department of Forest Resources, Kangwon National University)
Chun, Kun-Woo (Department of Forest Resources, Kangwon National University)
Kim, Min-Seok (National Forestry Cooperative Federation Engineering)
Kim, Min-Sik (Korean Association of Soil and Water Conservation)
Kim, Jin-Hak (Department of Forest Resources, Kangwon National University)
Lee, Dong-Kyun (Department of Forest Resources, Kangwon National University)
Publication Information
Journal of Korean Society of Forest Science / v.102, no.3, 2013 , pp. 463-466 More about this Journal
Abstract
We examined relationship between rainfall and triggering of shallow landslides in South Korea, based on hourly rainfall data for 478 shallow landslides during 1963-2012. Rainfall intensity(I) and duration(D) relationship was analyzed to obtain the I-D threshold for the initiation of a shallow landslide using the quantile regression analysis. The I-D threshold equation from in this study is: $I=9.64D^{-0.27}$($4{\leq}D{\leq}76$), where I and D are expressed in millimeters per hour and hours, respectively. In addition, rainfall criteria were proposed to predict the potential to cause landslides, based on values of I-D and cumulative rainfall derived from quantile regression analysis. Our findings may provide essential data and important evidences for the improvement of landslide warning and evacuation system.
Keywords
shallow landslides; South Korea; I-D threshold; quantile regression;
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Times Cited By KSCI : 2  (Citation Analysis)
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