Identification and zoning of prone areas to flood risk in Hashtrood city using MARCOS multi-criteria decision-making method
Subject Areas :
sayyad Asghari Saraskanrood
1
,
Elnaz Piroozi
2
1 - Professor, Department of physical geography, Faculty of Humanities, University of Mohaghegh Ardabili, Iran
2 - PhD in Geomorphology, Faculty of Social Sciences, University of Mohaghegh Ardabili, Iran
Keywords: Risk, MCDM, Flood, Geographic Information System, Hashtrood city,
Abstract :
The current research seeks to zoning Hashtrood city against flood risk. In this study, the effective factors for causing flood risk in the region were first identified through field investigations, study of sources and survey of experts' opinions. Then, the information layers were prepared by the geographic information system, and the evaluation and standardization of benchmark maps were done together using the fuzzy method. In the next step, the investigated factors were examined in the form of CRITIC weighting, and finally, the final analysis and modeling was done using the MARCOS method as one of the multi-criteria decision-making analysis methods. The results of the present research showed that the factors of altitude, slope, geology and precipitation respectively; With a weighting factor of 0.150, 0.143, 0.139 and 0.133, they are the most important causes of floods in Hashtrood city. In addition, 514.06 and 150.95 square kilometers, respectively, of the area of the area, are in the very high risk class, which indicates the potential of this city for floods. According to the validation results, the area under the ROC curve was calculated as 0.89 for the Marcus method, and therefore, the accuracy of this method is excellent. The map of vulnerable areas resulting from the current research can be effective as a valuable input for decision makers in the process of implementing emergency plans as well as long-term flood reduction management options.