Qualitative Assessment of the Coastal Plain of Talesh using the Modified DRASTIC Vulnerability Method

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Mahmoudpour H.; JANATROSTAMI S.; ASHRAFZADEH A.

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Journal: Journal of Water and Soil Science Year:2020 | Volume:24 | Issue:3 Page(s): 97-118

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Title

Qualitative Assessment of the Coastal Plain of Talesh using the Modified DRASTIC Vulnerability Method

Author(s)

Mahmoudpour H. | JANATROSTAMI S. | ASHRAFZADEH A. | Issue Writer Certificate

Keywords

Sensitivity analysisQ2

GroundwaterQ1

Land useQ2

ValidationQ1

Abstract

Given the fact that the DRASTIC index is ineffective in addressing the saltwater uprising issue in coastal plains, in the present study, three factors including Land use, distance to shoreline, and differences between Groundwater and sea level were added to the DRASTIC index. The proposed modification to DRASTIC was validated using the measured electrical conductivity (EC) data gathered from Groundwater monitoring wells throughout the Talesh Plain. The results showed that the coefficient of correlation between the map of EC over the region and the modified DRASTIC was 0. 52, while for the original DRASTIC, the coefficient was 0. 45, thereby implying a stronger relationship between EC and the modified DRASTIC in the Talesh Plain. Sensitivity analysis also showed that DRASTIC and the modified DRASTIC were the most sensitive to, respectively, depth to Groundwater (D) and Land use (Lu). According to the single-parameter Sensitivity analysis results, depth to water table and net recharge were the most effective parameters in DRASTIC, whereas the modified DRASTIC was the most sensitive to Land use and depth to Groundwater. It could be concluded that modifying the DRASTIC index would result in decreasing the area of very high and high vulnerable classes, and the area classified as low and moderate vulnerable could be increased...

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APA: Copy

Mahmoudpour, H., JANATROSTAMI, S., & ASHRAFZADEH, A.. (2020). Qualitative Assessment of the Coastal Plain of Talesh using the Modified DRASTIC Vulnerability Method. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 24(3 ), 97-118. SID. https://sid.ir/paper/392997/en

Vancouver: Copy

Mahmoudpour H., JANATROSTAMI S., ASHRAFZADEH A.. Qualitative Assessment of the Coastal Plain of Talesh using the Modified DRASTIC Vulnerability Method. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2020;24(3 ):97-118. Available from: https://sid.ir/paper/392997/en

IEEE: Copy

H. Mahmoudpour, S. JANATROSTAMI, and A. ASHRAFZADEH, “Qualitative Assessment of the Coastal Plain of Talesh using the Modified DRASTIC Vulnerability Method,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 24, no. 3 , pp. 97–118, 2020, [Online]. Available: https://sid.ir/paper/392997/en

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