2-D Resistivity Imaging in Taiping, Perak, Malaysia

Abstract

Geoelectrical resistivity imaging is increasingly being applied in environmental, engineering and hydrological investigations on top of geothermal and mineral prospecting, where thorough knowledge of the subsurface is required. A survey at Taiping, Perak was conducted using Wenner-Schlumberger configuration. For field measurement, a set of ABEM Terrameter SAS 4000, switcher unit, electrodes and multicore-cable were used in this study. A resistivity line with length 400 meter and electrodes spacing 5 meter was proposed. Software RES2DINV was used to interpret and analyze resistivity data. The maximum depth in this study is 84.7m and the resistivity value obtained range from 1 to 370 ?m. The result of resistivity value in range of 10 – 800 ?m referring to a figure, it can be justified that the study area was under alluvium material. The aquifer identified had shown the resistivity value was range from 200?m to 370?m.