Correlation of the IP Effect with the Depth of Polarised Layers in Transient EM Sounding

M-22 CORRELATION OF THE IP EFFECT WITH THE DEPTH OF POLARISED LAYERS IN TRANSIENT EM SOUNDING F. KAMENETSKY Ludwig-Maximalian University Munich Institute of General and Applied Geophysics Dieselstrasse 1 80993 Munich Germany 1 Introduction The influence of induced polarisation (IP) on electromagnetic (EM) data has been considered by different authors in particular in connection with the phenomenon of so-called high-resolution electromagnetics (HRE) or in other words with the unusually high vertical resolving power of transient sounding (TS) curves experimentally observed while exploring sedimentary formations mainly for oil and gas. The resolution is sometimes comparable to that of seismics. The mechanism