Landslide Susceptibility Mapping: A Case Study of Cauvery Basin and East Flowing Rivers South of Cauvery Basin, India

Abstract

Landslide is a geological phenomenon which is directly and indirectly creates effects on life.

It causes human property damages, roads breaking, building collapsing, other construction

devastation and also huge loss of life. To manage such kind of hazard there is a need to

identify landslide prone zones. This paper addressed a GIS based spatial data analysis for

landslide susceptibility mapping in Cauvery and East Flowing Rivers South of Cauvery Basin,

India. Seven important causative factors for landslide were selected and thematic data layers

were prepared in GIS and Remote Sensing environment. Ranks and numerical weights for all

the thematic data layers and their classes have been given by using two methods namely

Expertise Weights Method (EWM) and Factor’s Probability Weights (FPW) and then

integrated in GIS platform and prepared landslide susceptibility map of the area. The

landslide susceptibility map classifies the area into four classes of landslide susceptibility

zones such as; Very Low, Low, Moderate and High. The maximum area is occupied by Very

Low and Low Landslide Susceptibility Zone. An attempt has been made for landslide

susceptibility map validation with Geological Survey of India (GSI) published landslide zone

map and found satisfactory result.

Keywords: Landslide, GIS, remote sensing, EWM, FPW

Cite this Article

Debabrata Ghorai, Somnath Maiti, Ashis Kumar Paul., Landslide Susceptibility Mapping: A Case Study of Cauvery Basin and East Flowing Rivers South of Cauvery Basin, India. Journal of Remote Sensing & GIS. 2015; 6(1): 24–36p.