2 Induced Polarization Methods in Geophysics
Induced Polarization (IP) applies the same basic operation and array configuration as resistivity method that If you apply the current into the ground via current electrodes , the voltage can be measured at potential electrodes which are non - polarizable in IP method. The Earth accumulates the charges of applied current at some time, but when the applied current is switched off, the overvoltage will tend to decay slightly (slowly) from its peak value to zero after a certain time interval. This is the capacitive property of the Earth's ground. You can measure the IP effect by using either chargeability or apparent resistivity. Let's see through this post how these two (2) measurements can be deployed to describe IP effect. ip measurement methods What are the two (2) commonly applied methods in IP measurements? Here below are two (2) common IP measurement methods, i/ Time domain (pulse transient) ii/ Frequency domain 1: time domain ip measurement It measures overvoltage ...