Landslide susceptibility assessment of Yom River Basin, Phrae Province, Northern Thailand

摘要

A landslide susceptibility assessment was conducted for the Yom River catchment, North Thailand A map was produced, which groups the basin into different areas of susceptibility regarding landslides.An integrated approach was tested that allows more detailed treatment of combined factors ,which are inherently responsible for the occurrence of landslide events.All working steps and decision rules used for the analysis are based on robust statistical threshold criteria.The final susceptibility map describes the spatial hazard after applying a quantitative classification.The main landslide-controlling factors, chiefly based on remotely sensed data, were considered The final map provides a suitable and reliable starting point for further detailed mass movement analysis in the Yom River Basin.This region was hit by a disastrous landslide on May 4, 2001.The map can further be used to support strategic spatial planning measures at a regional scale and to identify priority areas for more detailed investigations at larger scales.