Details de l’article

Landslides pose a significant threat to human settlements and infrastructure in parts of Ventura County, southern California. Quantifying landslide hazard exposure is crucial for risk reduction and mitigation planning. This research aims to develop a GIS-based landslide hazard exposure model for parts of Ventura County, focusing on the spatial distribution of hazard risk to human-built environments. A proximity-based hazard exposure index (PBHEI) was developed using GIS, incorporating landslide hazard zones, building parcel locations, and terrain morphometric dynamics. Historical landslide events and geologic evidence were analyzed to validate the model. The PBHEI model revealed varying levels of landslide hazard exposure across southern California, with high-risk areas identified in proximity to landslide hazard zones. The results were visualized using a building parcel hazard exposure map, categorizing parcels into low, moderate, and high hazard exposure zones. This research demonstrates the effectiveness of a GIS-based PBHEI model in quantifying landslide hazard exposure in southern California. The results provide valuable insights for local authorities, planners, and emergency responders to develop targeted risk reduction strategies, including siting roads, public facilities, and residential areas away from hazardous landscapes. Key Words: Landslides, Hazard Exposure, GIS, Risk Reduction, Building parcels.