CBS tabanlı AHP yöntemi kullanılarak Bitlis İlinin Heyelan Duyarlılık Haritalaması

Abstract

This study presents the landslide susceptibility assessment of the region by considering the landslide-susceptible hazard factors such as slope, precipitation, soil, lithology, distance to the river, land use, elevation, aspect, and distance to active faults as well as historical landslide events and population throughout the province of Bitlis. For this purpose, a GIS-based Analytical Hierarchy Process (AHP) was used as an effective method in multiple decision-making methods. The results showed that approximately 25% of the study area has moderate to high landslide susceptibility. Accordingly, the landslide susceptibility of the study area is high, especially in the southwest and southeast parts of the study area which have mountainous and deep river valleys, and the partially mountainous regions in the north. Compared with previous landslide records and similar susceptibility maps in the literature, the results were found to be quite successful in determining landslide susceptibility of the study area. However, risk assessment wasn’t made within the scope of the study.

Snow Avalanche Risk Assessment using GIS-Based AHP for Bitlis Province

“…Five decision criteria, such as elevation, slope, aspect, vegetation density, and land use, were taken into account in the study, but some other important criteria affecting avalanche events, such as seismicity, lithology, population, precipitation/snowfall, temperature, and soil, were not considered. Flood [11], landslide [12], and rockfall [13] risk analyses were also performed for the same region using a GIS-based AHP.…”