Delineation of fresh and saline aquifers using multi electrode electrical resistivity scanning in a coastal area near Vaippar of Thoothukudi District, Tamil Nadu

Abstract

<span style="font-size:11.0pt;font-family: " times="" new="" roman","serif";mso-fareast-font-family:"times="" roman";mso-bidi-font-family:="" mangal;mso-ansi-language:en-gb;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-GB">To locate fresh water aquifers m<span style="font-size: 11.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:"times="" roman";="" mso-bidi-font-family:mangal;mso-ansi-language:en-gb;mso-fareast-language:en-in;="" mso-bidi-language:hi"="" lang="EN-GB">ulti electrode <span style="font-size: 11.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:"times="" roman";="" mso-bidi-font-family:mangal;mso-ansi-language:en-gb;mso-fareast-language:en-us;="" mso-bidi-language:hi"="" lang="EN-GB">electrical resistivity scanning was carried out at Kalaignanapuram, Subramaniapuram, Sippikulam and Mettur villages using SSR-MP-AT-ME model multi electrode resistivity meter. In Subramaniapuram, the resistivity varied from 47 to 590 ohm m. From the resistivity difference, it is decided that the location must be a possible zone of the fresh water aquifer.. Geochemical parameters showed very high to moderate concentration in the three locations which similitude to saline water. In Subramaniapuram, chemical parameters concentration is within the desirable limit for drinking of WHO and hence the location is identified as a fresh water aquifer zone. Thus, very low resistivity and higher value of chemical parameters are due to presence of saline water.</span></span></span>