Electrical Resistivity Tomography (ERT) method used to determine the subsurface's resistivity distribution by making measurements on the ground surface. The eletrical current is injected into the earth through a pair of current eletrodes, and the potenial difference is measured between a pair of potential eletrodes.

Applications

• Determine the underground water resource
• Detects weak zones under rock surface (not detected by seismic refraction)
• Delineation of small features like cavity, contamination plumes, weak zones in structures like dams etc.
• Bedrock quality and depth measurements
• Mineral prospecting, Dam structure analysis, Landfill