hazard zonation of Land subsidence using Analytical Hierarchy Process (AHP) case study (city of Buin Zahra)

Subject Areas : Geopolitic

صمد شادفر ¹ , اسماعیل نصیری ² , سکینه چیتگر ³ , علی احمدی ⁴

1 - پژوهشکده حفاظت خاک و آبخیزداری
2 - دانشگاه پیام نور
3 - دانشگاه پیام نور
4 - دانشگاه پیام نور

Received: 2014-11-18 Accepted : 2015-06-06 Published : 2016-01-21

Keywords: Land subsidence, Zoning, AHP, central Bouin Zahra,

Abstract :

Excessive exploitation of groundwater resources in the long term, will lead to considerable damage Especially in terms of economic and by effect of land subsidence phenomenon. Therefore, this study aimed to identify the causes of land subsidence and determining where subsidence has been done in the area of Bouin Zahra. Therefore, the first map of the study area was prepared. The field work to map the distribution of subsidence was done with the help of GPS. At a later stage was used from AHP method to analyze the data. The results show that the indiscriminate harvesting factor by a factor of 0/4882 In the first place, and the lithology 0/2445 coefficient of secondary importance in the creation of subsidence area. The results showed that 55% of the area of relatively high risk zoning is very high.