What's electric profiling method?

What's electric profiling method?

Electric profiling: it can be divided composite profile method ,symmetrical profiling and other related detection array.All of survey methods reflect geoelectric change in the strata,  under the condition that the power supply electrode and the measurement electrode maintains a certain distance,follow the direction of the selected line measurement.

ρ=KU/I

ρ—Apparent resistivity,(Ω·m)

K—Array coefficient

U—Potential difference,（mV)

I—Current intensity,（mI)