Electrical Resistivity Imaging
Electrical Resistivity measurements determine vertical and lateral variations in the resistivity of the subsurface. These measurements have many uses, including locating the depth to the water table, delineating geologic layers, or mapping voids, fractures and other geologic features. Direct-Current Resistivity methods require the emplacement of electrodes at the surface, and are most appropriate for depths of investigation of generally less than 200 feet, although deeper investigations can be performed. ZAPATA has completed resistivity surveys across the USA and internationally.
DC-Resistivity Survey on Easter Island
DC-Resistivity profile over sinkhole
