Evaluating earthquake-induced widespread slope failure hazards using an AHP-GIS combination

Abstract Landslides and slope failures are often caused by earthquakes. This study proposes a method to map earthquake-induced failure hazards that uses the analytic hierarchy process (AHP) geographic information system (GIS) for four districts where many were induced earthquakes (the 2018 Hokkaido Eastern Iburi, 2016 Kumamoto, 2008 Iwate-Miyagi Nairiku, 2004 Mid Niigata Prefecture earthquakes). The assessment system, which was based on National Research Institute Earth Science Disaster Resilience landslide distribution maps, analyzed using methods of previously published. We considered relationships between distributions hazard factors (elevation, angle, type, catchment degree, geology, vegetation). These utilized pairwise comparisons in AHP analysis. degree exerted highest effects districts. highly consistent with rank. results provide practical evaluating slope-failure hazards.