Avalanche hazard using Analytical Hierarchy Process (AHP) Model Case Study: Pilerood Watershed, Ardabil Province))

Avalanche is one of the events snowy areas that if science does not deal with it possible dangers and problems caused irreparable. The main objective of this study was to evaluate the effect of 9 effective factor in avalanche slope, aspect, elevation, temperature, rainfall, land use, type Formation, type of soil and road and determine the importance of each of these parameters in falling avalanches and avalanche hazard zonation in each area of work using analytical Hierarchy Process Model (AHP) is. In order to study impact of the factors in the avalanche of software ARCGIS10.1 for mapping parameters of the avalanche and software Expert choice for the weighting factors were used in the avalanche. The results showed that most of the factors that affect the avalanche slope, aspect, elevation. And about 20.8% of the area is in danger of avalanche.