Published Paper Details:

Geoelectrical methods are most commonly considered to be the fundamental methods in groundwater research, but in case of deeper aquifers the electrical resistivity tomography [ERT] / 1D VES cannot achieve deeper targets and the electrical sounding cannot ensure a complete and dense space coverage. In such a case the use of the magneto telluric [MT] method can provide for great depths of research, as well as a good space sampling. As huge amount has to be incurred for very deep drilling, utmost care has to be taken. Considering this view it is planned to go for integrated aquifer mapping. This study pertains to an integrated geophysical investigations combining one dimensional vertical electrical sounding [1D VES], a geoelectric method and two dimensional audio magneto telluric imaging [2D AMT], an electromagnetic technique to prospect the very deep potential hard crystalline rock aquifers for an individual farmer with 25 acres of land at Pukkulam, Tiruppur district, Tamilnadu, India which being a acute drought prone area. Before going for selection of new potential point, a correlative and confirmative study has been taken by this integrated approach near the existing very deep bore well drilled to a depth of 394m with a high yield of 130 lpm. As both geoelectric and AMT studies revealed good correlation and good coincidence of potential targets, the method proved to be a good approach. By this integrated approach one deep bore well has been drilled in the study area to a depth of 207m with a good discharge of 130 lpm. With this same methodology one more very deep borewell point has been recommended to drill up to a depth of 400m. Since this integrated approach gives a good encouraging result it may be followed to minimize the failure rate so as to relieve the agriculturist from mental agony.