Electric Resistivity Tomography (ERT)

Electric Resistivity Tomography (ERT) is a geophysical method used to create detailed images of the subsurface by measuring how easily electrical current flows through the ground. Electrodes are placed in the soil or water, and small electrical signals are sent between them. Variations in resistivity reveal differences in material composition, moisture content, or voids. By analyzing these measurements with specialized software, scientists can generate 2D or 3D images of underground features, helping in applications like environmental assessments, groundwater studies, and archaeological investigations. ERT provides a non-invasive way to visualize what lies beneath the surface.