Analyse Spatiale de la Susceptibilité des Versants aux Glissements de Terrains. Comparaison de deux approches spatialisées par SIG

GIS are more and more used to evaluate landslide susceptibility. Among the different methods generally used, bivariate analyses are considered as the more robust techniques, particularly the Weight of Evidence technique. However, one major drawback of this technique is the problem of information redundancy between predictive variables. Conversely, the logistic regression method does not need this assumption. This paper presents a strategy to obtain accurate landslide susceptibility zonation without statistical problem, at the 1:10 000 scale for complex mountainous environments.