| چکیده انگلیسی مقاله |
One of the slope instability forms is land sliding which causes human loss and economic damages. In the basins of northern Iran, a combination of natural and human factors have intensified this phenomenon and resulted in numerous damages One of the main solutions for decreasing the landslide hazards is keeping distance from higher danger areas. For this purpose, it is necessary to prepare the landslide susceptibility map. In this research, after field studies in the Vasetan basin, nine factors including slope gradient, aspect, elevation, precipitation, distance from road, distance from fault, distance from drainage, land use and lithology as effective factors in landslides occurrence have been studied . After preparing the information of these nine factors in GIS environment using Arc View software, every layer has been crossed with the landslide layer to find the role of corresponding layer in the formation of landslide. Then susceptibility mapping was performed with five methods including information value, valuing area accumulation, Analytical Hierarchy Process (AHP), Kopta-Joshi proposed method and multiple regression. Finally, in order to evaluate the verification of the susceptibility mapping, the obtained weights from the Vasetan basin using the above five methods were used for the adjacent basin (Varakee basin), which has similar characteristics to the Vasetan basin. Results showed that Multiple Regression gives better results for landslide susceptibility mapping of the area. |