Downward continuation of (Vs)L profile in 1P (time-domain) with linear excitation using point electrodes. A short notet1

It is seen that the apparent chargeability (M_a)_L anomaly over a 2D graphite body splits into two distinct (V_s)_L anomalies which closely follow the apparent resistivity profile. This suggests that the electric field amplitude is distorted due to a superficial inhomogeneity creating a (V_s)_L anomaly, which bears no relation to the polarized body. The target depth obtained by continuation of such a profile is therefore, not acceptable.