ERT (Electrical Resistivity Tomography)

Electrical Resistivity Tomography (ERT) is a method used to create detailed images of what's beneath the Earth's surface by measuring how easily electrical current passes through underground materials. Electrodes are placed in the ground, and a small electrical current is sent through the area. The resistance to this current, called resistivity, varies depending on the type of material—like water, clay, or rock. By collecting many measurements from different locations, ERT software reconstructs a 2D or 3D image showing the subsurface's composition and structure, aiding in applications such as groundwater detection, environmental assessment, and geotechnical investigations.