ELIMINATE METHOD FOR DISTORTED STAGE OF TRANSIENT ELECTROMAGNETIC SOUNDING CURVE IN NEAR-ZONE

The article will discuss about the method of using P. Raab and F. Frischknechts expression of the transient decay voltage for a central loop system, abopting the methodology of making program to counl the all-time apparent resistivity ρ_τ. The apparent resistivity curve have overcomed the disadvantage of distorted at the left of curves, which occurred by used the latetime apparent resistivity formula for any models.