Proposed Korea rainfall thresholds for landslides over bedrock

Moonhyun Hong, Sangseom Jeong, Junghwan Kim, Yongchai Chang

Research output: Contribution to conferencePaperpeer-review

Abstract

The rainfall threshold (ID curve) triggering landslides were investigated by considering the effects of antecedent rainfnall in South Korea. The time and location data of landslides occurred in South Korea from 1999 to 2016 were collected. 231 landslide histories from 1999 to 2013 were used to suggest rainfall thresholds. Each of Threshold curves was inferred by using a Bayesian statistical technique. For metropolitan area, the effect of geological characteristics on rainfall thresholds was also investigated. Based on this study, it is shown that the slope of rainfall threshold for metamorphic rock is slightly higher than that of igneous rock. It is also found that applying the longer IETD implies the effect of antecedent rainfall lasts longer, and it can be predicted that landslides may occur even at lower rainfall intensity for long duration rainfall.

Original languageEnglish
Pages2155-2157
Number of pages3
Publication statusPublished - 2017
Event19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017 - Seoul, Korea, Republic of
Duration: 2017 Sep 172017 Sep 22

Other

Other19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017
CountryKorea, Republic of
CitySeoul
Period17/9/1717/9/22

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2011-0030040).

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

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