Landslide hazard zonation using bivariate statistical (AHP) model in Golestan Province

Introduction: Landslide is one of the natural hazards around the country that cause casualties and financial losses each year. This disaster destroyed roads, meadows, mountains, erosion, and sedimentation in the watershed basins. Method: In this study, the risk of landslides in Golestan province is examined via weighted (using AHP) bivariate statistical model. First, all the landslides (number & area) were listed by field study based on local data, and then the distribution map was prepared for each city. Findings: According to the results, relative risk map was prepared with six classes. The highest and lowest number of landslides occurred in Maraveh Tappeh and Aq Qala respectively. The most area of landslides was in Aliabad. In addition, Ali Abad and Kalaleh Kordkuy county and also Gonbad, Ramian, Bandar Torkaman, Gomishan had the most and the least hazard rate. Conclusion: The analysis of effective factors for landslide showed that landslide factors have different importance.

Keywords:

landslide , hazard zonation , AHP method , زمین لغزش , پهنه بندی خطر , روش AHP