Geophysical Survey Electrical Resistivity Survey

The electrical resistivity method is used to map the subsurface electrical resistivity structure, which is interpreted by the geologist to determine the geological structure of physical properties of the material. The electrical resistivity of a material measured in ohm meter. In the resistivity method, the current is injected into the ground through surface electrode, whereas in electromagnetic method, currents are induced by the application of time-varying magnetic field. There are few procedures of array during the investigation such as Wenner, Schlumberger, dipole-dipole and pole-dipole.

APPLICATIONS

  • Groundwater studies
  • Geotechnical pre-investigation
  • Geological mapping
  • Sub-bottom mapping at sea and lakes
  • Archaeology