SEGJ Technical Conference


A demonstration experiment of the SIP method in a waste disposal site - Part 2: EM coupling and 3D analysis


Abstract
The SIP method is one of the IP methods using the alternating current of several frequencies. Since this method measures complex resistivity (resistivity and phase difference) for every frequency, it can acquire many information on subsurface electric properties as compared with the conventional IP method. In order to verify the effectiveness of the SIP method, a demonstration experiment of the SIP method was carried out in a waste disposal site. We examined the acquired complex resistivity data and evaluated the influence of electromagnetic (EM) coupling which is one of the greatest problems in the SIP method. The influences were notably observed to the phase of higher frequency. We calculated the EM response and tried to compensate the complex resistivity data. The resistivity and phase structures were obtained for every frequency by applying the 3D analysis to the observed and compensated data.