New landslides susceptibility mapping method: a case study

Abstract

Many impressive landslides have recently occurred in the world causing serious damages for infrastructure facilities and buildings. A prediction based on the susceptibility mapping will be of such importance in order to reduce their damages. Our work constitutes a first attempt of mapping the landslides susceptibility by a method which a compromise between the two known approaches: The expertise method and the analytical method. Manylandslidesoccured in Lebanon, causing destructive damages to the transportation infrastructure and agricultural territory.A first data on these landslides and their permanent causes are presented based on the existing documents and soil investigations campaigns. Our study is based on the analysis of different causal factors of these landslides, such the geology, slope, hydrogeology, soil, tectonic, pluviometry and vegetation. This study permits to map the critical modalities of different causal factors. The superposition of these maps of different factors will be beneficial to localize the zones presenting high risk of instability.