Modification of DRASTIC Model to Assess Groundwater Vulnerability by Applying two Approaches: Single Parameter Sensitivity Analysis (SPSA) and Analytical Hierarchy Process (AHP)

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Ebrahimi Seyedeh Hamideh; Neshat Aminreza; Javadi Saman; Aghmohamadi Hossein

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Journal: IRANIAN JOURNAL OF ECOHYDROLOGY Year:2019 | Volume:5 | Issue:4 Page(s): 1191-1202

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Title

Modification of DRASTIC Model to Assess Groundwater Vulnerability by Applying two Approaches: Single Parameter Sensitivity Analysis (SPSA) and Analytical Hierarchy Process (AHP)

Author(s)

Ebrahimi Seyedeh Hamideh | Neshat Aminreza | Javadi Saman | Aghmohamadi Hossein | Issue Writer Certificate

Keywords

Groundwater VulnerabilityQ1

Analytical Hierarchy Process (AHP)Q2

Single Parameter Sensitivity Analysis (SPSA)Q2

GISQ2

Yasuj plainQ2

Abstract

Groundwater Vulnerability assessment plays a key role in the conservation and proper usage of these strategic resources. Various methods have been proposed to assess the vulnerability and the most common is the DRASTIC model. The DRASTIC model consists of seven hydrogeologic factors to compute for the vulnerability index. The main problem with this method is fixed rates and weights related to each parameters in this model. So the main purpose of this research is to modify primary DRASTIC model by Single Parameter Sensitivity Analysis (SPSA) and Analytical Hierarchy Process (AHP) and finally to produce vulnerability map in GIS environmental software. Yasuj plain located in southwest of Iran is chosen as a study area. Nitrate concentration related to 24 wells are used to compare which method make better prediction based on real pollution in study area. Finally SPSA method has shown the best correlation with sample Nitrate, by specifying more suitable weight for DRASTIC parameters in each polygon. Also AHP method has assigned new weights to each parameters based on the importance and better result was achieved compare with basic DRASTIC. These results can be used to map groundwater susceptibility to pollution.

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APA: Copy

Ebrahimi, Seyedeh Hamideh, Neshat, Aminreza, Javadi, Saman, & Aghmohamadi, Hossein. (2019). Modification of DRASTIC Model to Assess Groundwater Vulnerability by Applying two Approaches: Single Parameter Sensitivity Analysis (SPSA) and Analytical Hierarchy Process (AHP). IRANIAN JOURNAL OF ECOHYDROLOGY, 5(4 ), 1191-1202. SID. https://sid.ir/paper/254111/en

Vancouver: Copy

Ebrahimi Seyedeh Hamideh, Neshat Aminreza, Javadi Saman, Aghmohamadi Hossein. Modification of DRASTIC Model to Assess Groundwater Vulnerability by Applying two Approaches: Single Parameter Sensitivity Analysis (SPSA) and Analytical Hierarchy Process (AHP). IRANIAN JOURNAL OF ECOHYDROLOGY[Internet]. 2019;5(4 ):1191-1202. Available from: https://sid.ir/paper/254111/en

IEEE: Copy

Seyedeh Hamideh Ebrahimi, Aminreza Neshat, Saman Javadi, and Hossein Aghmohamadi, “Modification of DRASTIC Model to Assess Groundwater Vulnerability by Applying two Approaches: Single Parameter Sensitivity Analysis (SPSA) and Analytical Hierarchy Process (AHP),” IRANIAN JOURNAL OF ECOHYDROLOGY, vol. 5, no. 4 , pp. 1191–1202, 2019, [Online]. Available: https://sid.ir/paper/254111/en

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