Detection of submarine groundwater discharge to coastal zone study using 2d electrical resistivity imaging study at Manapad, Tuticorin, India

Abstract

Submarine Groundwater Discharge (SGD), is identified at Manapad headland using 2D Electrical Resistivity Imaging study. The study area is covered with the calcareous marine sediments and shells materials formed by the tectonic upliftment. Measured apparent resistivity values are inverted into inversion resistivity pseudosection by using RES2DINV 3.56 software and iterated to calculate resistivity model. Resistivity zones with a range of values from 31 to 174 Ohmm act as permeable pathway for freshwater discharge to the down stream side towards sea.