ABSTRACT
To facilitate broader application of the comprehensive landslide risk assessment under climate change, this study introduces the hierarchical territorial risk assessment method for compound water/soil geo-disasters, which consists of two types of risk assessment methods: the territorial-scale “Japanese Early Warning System (JEWS)”, and the Finite Element Method (FEM)-based integrated framework for catchment-scale slope stability analysis and local-scale soil runout analysis. In this study, the applicability and effectiveness of the newly proposed risk assessment method were examined through two case studies of torrential rainfall induced geo-disasters occurred in Hokkaido, the north island of Japan. As the result, this study advanced the mechanistic understanding of rainfall-induced landslides and offered valuable insights for improving landslide hazard assessment and prevention/mitigation strategies un-der increasingly complex climatic conditions.
