An experiment of spectral induced polarization

B. Balia, G. P. Deidda, A. Godio, G. Ranieri, L. Sambuelli, G. Santarato


A Spectral Induced Polarization (SIP) survey was carried out in a mining test site in Sardinia (Italy). Measurements were developed along a profile by using an axial dipole-dipole array with 10 AB positions and 6 MN positions for cach AB. The amplitude and phase spectra of the apparent resistivity were acquired in the 0.25-4096 Hz frequeney range. The results obtained through the processing and inversion step seem to confirm that, with respect to the classical TD/FD Induced Polarization, SIP allows better discrimination of some important characteristics of mineral deposits such as mineral content and grain size.



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Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN: 2037-416X