Application of AHP Model and Fuzzy Logic in Landslide Hazards Zonation Case Study: Frizi Basin, Northern Slope of Binaloud Mountains

Instability of the slopes including the risk of landslides, are major hazards due to the nature of the mountainous regions with great abundance. Of course, if this risk be accompanied with other risks such as earthquakes and floods produce a wider range of severity. Binalood mountainous zone is due to expanded shale and Hyalite formation, sensitive and high intensity land use and other anthropogenic activities have a particular sensitivity of landslide hazards. The Frizzy basin with large area in the context of two different types of litho logy Hyalite and lime has a special situation. In this article we use AHP model and fuzzy logic to landslide risk assessment in the Frizzy basin. Total of 15 criteria associated with the occurrence of major landslide phenomenon was analyzed. Each of these measures as a factor map, separately classifieds and statistical methods were rate. Production of final map for landslide hazard zonation in the basin firstly showed that about 68 percent of the total area of the basin has critical and medium landslide hazard. Secondly, has been determined that the Hyalite variable have high significant (R2=0.835), compared to other formations in the basin and has a stronger correlation with the dependent variable of landslide. The GPS data have been determined a high level of compliance with the used technique based on fuzzy logic. Also the model application demonstrates a good suitability for slopes instability zoning in mountainous basins.