Landslide Susceptibility Assessments in Indonesia: Applications of Statistical and Heuristic Methods for Landslide Susceptibility Assessments, a Case Study in Wadas Lintang Sub District

Landslides are the common hazard during the rainy season in tropical countries such as Indonesia. Wadas Lintang sub district was chosen as the study area because this area had many occurrences of landslides. One of the basic activities in landslide mitigation is to generate a landslide susceptibility map which is the main objective of this research. Using appropriate method becomes the key to determine the areas prone to landslide. There are three applied methods for assessing the landslide susceptibility in Wadas Lintang sub district such as bivariate statistical analysis, multivariate statistical analysis (logistic regression) and combination between bivariate and pair wise comparison method. Two types of landslides were identified in study area; rotational and translational slides. The comparison between three methods for assessing landslide susceptibility proofs that logistic regression gives the best estimation for the location of future rotational slides as well as translational slides. The susceptible areas to landslide are determined by a combination of several factors which depend on the landslide types.