Geohydrological investigation using Schlumberger sounding in part of hard rock and alluvial area of Ahraura region, Mirzapur district, Uttar Pradesh, India

摘要

The study area is located in the part of hard rock and alluvial area of Ahraura region, Mirzapur district, Uttar Pradesh, India. Twenty-two vertical electrical soundings (VES) were conducted using Schlumberger configuration at suitable locations in study area for geohydrological or groundwater investigation. The VES data were interpreted using both techniques: curve matching technique and automatic iterative method. Geoelectrical cross section along the five profiles was conducted based on the results of vertical electrical soundings using Schlumberger configuration. A priori information, detailed survey, and appropriate locations of vertical electrical sounding were done using satellite imagery and integrated geophysical methods. The different types of hydro-resistivity maps are prepared based on the results of VES such as contour map of total transverse resistance and total longitudinal conductance, 3-D surface map of total transverse resistance and total longitudinal conductance, contour map of substratum, and one-grid vector resistant substratum map, giving the information about lithological changes and subsurface geology.