This method includes injecting electrical present into the bottom by way of two outer electrodes and measuring the ensuing potential distinction between two inside electrodes. The configuration maintains equal spacing between all 4 electrodes, aligned linearly on the soil floor. The measured resistance is then used to calculate the obvious resistivity of the subsurface materials, assuming a homogeneous and isotropic soil construction.
Correct willpower of subsurface resistivity is essential for quite a lot of engineering and geophysical purposes. Purposes span from website investigation for grounding methods and cathodic safety design to geological surveys and groundwater exploration. Historic use of this methodology dates again a number of many years and has developed by way of varied refinements in instrumentation and knowledge processing methods, contributing considerably to understanding {the electrical} properties of the earth.
