Electricomagnetic (EM) survey uses the response of the ground to the propagation of electromagnetic field. EM methods are sensitive to variations in conductivity values of subsurface materials and can identify anomalous areas due to the presence of void, fluids, metals and other variations. Unlike electrical resistivity method, no ground contact is required for EM survey. Therefore, it eliminates direct electrode coupling problems and allows a rapid data acquisition.
Detection of geological and artificial cavities
Land contamination mapping
Detection of buried storage tank and waste drums