Utilization and application of AHP method in landslide susceptibility mapping production (sinop and its surroundings) [AHP yöntemi’nin heyelan duyarlılık haritalarının üretilmesinde kullanımı ve uygulaması (sinop ve yakın çevresi)]

Abstract

Computer-aided mapping technologies and developments used in improvement of these methods have led to the production of higher performing landslide susceptibility maps. In this study, a thorough review of the literature about the production of landslide susceptibility maps by using AHP (Analytic Hierarchy Process) was made and, also, landslide susceptibility evaluation of Sinop and its surroundings was analyzed by AHP. In the evaluation of landslide susceptibility factors such as aspect, lithology, land use, curvature, slope, elevation and proximity to the main road, river and structural elements are considered to be controlling factors in the landslide process. These factors are turned into grid maps according to their weighted values and by handling the values in comparison matrices in different manners, and variety of landslide susceptibility maps produced. Analysis of results showed that main controlling factors of landslides are the proximity to main road, aspect and lithology. As a result, in terms of landslide susceptibility, very low landslide susceptibility is determined in the 10.77%, low landslide susceptibility determined in the 10.59%, moderate landslide susceptibility is determined in the 52.64%, high landslide susceptibility determined in the 25.66%, very high landslide susceptibility determined in the 0.34%, of Sinop and its proximity area. This study reveal that AHP, which has been used increasingly in the last years, provides high performance in the study area. © 2015, TMMOB - Jeoloji Muhendisleri Odasi. All rights reserved.