Electrical resistance measures the resistance of soils and other materials to an electrical current. Subsurface features with different physical properties have varied levels of resistance to the flow of electricity.
Electrical resistivity is useful in identifying buried walls, rubble, surfaces, structures, roads, geological features, ditches, pits, gullies, drains, metal pipes, and graves. Our electrical resistance results were excellent and far exceeded our expectations. Given that we carried out the survey during the rainy season, we think the moist ground conditions improved the quality of our results.