Relationship of the landslide to faulting in the Shiretoko Peninsula, East Hokkaido, Japan

Abstract

In the Shiretoko Peninsula, East Hokkaido, large landslides, such as the Aidimari Collapse, Kamoiunbe Debris Avalanche, Kuzurehama Debris Avalanche, Minamidake Debris Avalanche, Onnebetsudake Northwest Collapse and Onnebetsudake Southeast Slump/Slide, are identified along the faults that displaced Quaternary lava flows and lava domes. These large landslides are geologically influenced by the active faults, as well as caprock structures and instability of stratovolcanoes. Moreover, the earthquakes and volcanic activity, accompanying faulting, are possibly immediate causes of large landsliding.