Document Type : پژوهشی
Authors
1
university of Mohaghgh Ardabili
2
University of Mohaghegh Ardabili
3
Ph.D student in Geomorphology, Faculty of Social Sciences, University of Mohaghegh Ardabili,
10.22034/hyd.2025.65991.1779
Abstract
Landslides are active processes that contribute to landscape transformation and, if not paid attention to and unprepared, cause irreparable damage in all dimensions. The Onarchay watershed of Meshkinshahr has been continuously affected by landslides due to its specific geological, climatic, and geomorphological characteristics. Therefore, the present study was conducted with the aim of zoning the landslide risk in this basin. The method used was based on the MABAC multi-criteria decision-making model and in EXCEL and GIS software environments. In order to zoning the Onarchay landslide, 12 important variables affecting the occurrence of landslides were used: geology, soil, lithology, distance from fault, vegetation cover, slope, slope direction, elevation classes, precipitation, distance from rivers, land use, and distance from road. The weighting of the criteria examined in MABAC was done using the CRITIC method. Finally, the thematic layers affecting the landslide event were combined with each other in the GIS software environment using the weighting combination method, and the final landslide hazard zoning map was obtained. According to the output obtained from the application of the MABAC method, the slope, land use, lithology and geology factors were ranked first to fourth with higher scores. Other factors including: elevation classes, vegetation, soil, precipitation, distance from roads, distance from rivers,
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