Heavy Rain Types for Triggering Shallow Landslides in South Korea

This study aimed to elucidate the differences in the tendency for landslides to occur according to heavy rain types in summer in South Korea. For this, the rainfall intensity-duration (I-D) relationship and the differences in I-D relationship by three representative heavy rain types were analyzed statistically, based on the corresponding hourly rainfall data for 478 shallow landslides occurred through South Korea during 1963-2012. The results of this study should contribute for establishing landslide warning and evacuation systems when considering the characteristics of heavy rain in the future and suggest the necessity to improve rainfall and landslide prediction techniques during localized convective rainstorms and to provide systematic and proactive warning and evacuation systems.