Landslides are one of the common natural as well as man-made hazards in mountainous terrain which causes huge damage to human beings and property. In this paper mapping of landslide hazardous zones based on fuzzy logic approach using GIS techniques. In this regard various landslide parameters were generated which related to landslide occurrences in Coonoor and Kothagiri taluks. The fuzzy membership value is assigned on individual parameters such as active–passive slope, concave-plain-convex slope, drainage density, dissected-un dissected slope, geology, geomorphology, lineament density, lineament frequency, lineament intersection density, landuse/land cover, rainfall, degree of weathering /regolith cover, shallow-moderate-steep slope, soil, and water level. An attempt is made to integrate these parameters on different fuzzy operators and produce landslide hazard zonation map and its divides the study area into three zones viz., high, moderate and low. 95% of the existing landslides have been observed in high hazard class. The final map is validated using area under curve method for calculating prediction accuracy.
Modeling Earth Systems and Environment – Springer Journals
Published: Mar 31, 2018
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