GIS based landslide susceptibility mapping using a fuzzy logic approach: A case study from Ghurmi-Dhad Khola area, Eastern Nepal

摘要: Landslides cause extensive loss of life and property in the Nepal Himalaya. Since late 1980s, different mathematical models have been developed applied for landslide susceptibility mapping hazard assessment Nepal. The main goal this paper is to apply fuzzy logic Ghurmi-Dhad Khola area, Eastern Seven causative factors are considered: slope angle, aspect, distance from drainage, land use, geology, faults folds, soil rock type. Likelihood ratios obtained each class by comparison with past occurrences. normalized between zero one obtain membership values. Further, operators generate maps. Comparison inventory map reveals that gamma operator a γ-value 0.60 yields best prediction accuracy. Consequently, used produce final zonation map.