期刊名称：International Research Journal of Earth Sciences
电子版ISSN：2321-2527
出版年度：2015
卷号：3
期号：7
页码：23-29
语种：English
出版社：International Science Community Association
摘要：The distribution of landslide in the mountain area can be well understood studying drainage concentration and topographic wetness over the space. In the present study, the saturation of the slope materials were studied with the help of topographic index model (TIM) which incorporate both slope and upslope contributing area. Here nine landslide inducing parameters like slope, amplitude of relief, lithology, drainage density, upslope contributing area, road contributing area, human intervention, presence of thrust, and land use were made to prepare Landslide Susceptibility Zonation Map applying landslide hazard evaluation factor rating approach. The interaction between landslide and different triggering factors were studied separately and ultimately final coordination is made through Landslide Potentiality Index Value (LPIV). To prepare hazard zonation map of the Shivkhola watershed, grid/cell wise weighted index value (WIV) is assigned for each and every classes of individual triggering factors on the basis of landslide potentiality index value. Landslide Susceptibility Index Value (LPIV) is the outcome of the cumulative total of all grid/cell wise assigned Weighted Index Value. Finally, to assess the role of topographic wetness in landslide phenomena of the Shivkhola watershed a relationship was established between landslide susceptibility map and topographic index model.
