STUDY ON LANDSLIDE DAMS AND DEBRIS FLOWS INDUCED BY EARTHQUAKES

Abstract

In the Iwate-Miyagi Nairiku Earthquake in 2008, landslide dams and debris flows were reported. However both landslide dams and debris flows are typical disasters in case of inland earthquakes, the number of case histories on them are little in the past earthquakes in Japan. So the landslide dams and debris flows in the above Earthquake are very important to study them for the future. In this paper, the fundamental properties both on 14 landslide dams in the above Earthquake including 11 ones in the past earthquakes in Japan and 2 debris flows in the above Earthquake were discussed. As a result, several lessons on the properties of landslide dams and debris flows can be obtained.