بررسي خطر زمين لغزش با استفاده از منطق فازي (مطالعه موردي منطقه رودبار)

Landslide Hazard Zonation using Fuzzy Logic, Case Study Rudbar Area

Rudbar area due to variety in lithological features and environmental conditions such as slope, precipitation rate, earthquake, and etc. is susceptible to land sliding. To evaluate landslide susceptibility in the area, landslide controlling factors were identified through analysis of existing maps, data and field survey. The landslide controlling factors were prepared as several thematic layers in a GIS environment. The thematic layers were analyzed and integrated using fuzzy logic system. The results were presented as landslide susceptibility maps in Auto CAD system. The results indicate that 68.30 percent of the landslides are located in moderate to high hazard class. Moreover, landslide density in high hazard class is significantly more than low hazard class. The main characteristic of the method is application of the expertʹs knowledge as rules for preparation of hazard map.