Identification and zoning of areas prone to the occurrence of landslides using the Aras multi-criteria analysis method (Study area: Qaranqoochay watershed in the southeast of East Azarbaijan province)

Document Type : Research Paper

Authors

1 professor of Geomorphology, Faculty of Social Sciences, University of Mohaghegh Ardabili, Ardabil, Iran

2 PhD in Geomorphology, Faculty of Social Sciences, University of Mohaghegh Ardabili, Ardabil, Iran

Abstract

According to the geological, physiographic, lithological, climatic, and human conditions, the QaranqooChay basin has been affected by the risk of landslides for a long time. Based on this, the current research seeks to assess and zonate the risk of landslides at the level of this basin. In this regard, first, a distribution map of landslides and influencing variables was provided. In the next step, the degree of membership of the parameters was determined using the fuzzy membership function, and the weighted values of the criteria were determined using the CRITIC method. Finally, the landslide susceptibility map was extracted using the ARAS multi-criteria decision-making method. According to the obtained results, slope, lithology, and land use respectively; With values of 0.162, 0.152, and 0.147, they assigned the most weight among the factors affecting the occurrence of landslides. Also, the results of the research showed, respectively; 12.86% and 25.42% of the area of the basin are in the high-risk and high-risk classes. Mainly, very dangerous and high-risk areas are located in the northern, southern, and central parts of the basin, and these areas should be prioritized in terms of management works and the implementation of protection projects. Also, due to the use of the rock curve method and sub-curve level (0.89), the accuracy of the ARAS method in identifying and zoning areas prone to the occurrence of landslides in the QaranqooChay Basin is at an excellent level.

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Articles in Press, Accepted Manuscript
Available Online from 25 May 2024
  • Receive Date: 14 March 2024
  • Revise Date: 13 May 2024
  • Accept Date: 25 May 2024