ارزیابی مقایسه ای روشهای پهنه بندی خطر زمین لغزه ها در منطقه کودی کانال هند

Abstract

Study area is located in Tamil Nadu state of India and includes most parts of kodaikanal taluk of Dindigul district. The  aims of this study is to quantitativly assess the causative factors responsible for recurring incidence of landslide over this area and give a proper hazard zonation map of it. To achive an higher degree of objectivity and accuracy and examine wether the hazard map make a correct distinction between landslide free and landslide prone area, two methods of Empirical approach (qualatitive map combination) and Bivariate Statistical analysis have been used. The main factors that has been studied and used to provide an ideal model using the weightage of different factors are as follow: soil thickness, weathered zone thickness, lineament density, slope inclination, annual rainfall, rock type, landuse, relative relief, topographic units, drainage density, annual ground water fluctuation