Concentrations of natural telluric currents and their relation to the basement structure of the eromanga basin, Southwest Queensland

Abstract

This paper concerns the use of a natural-source, electromagnetic (EM) technique for investigating the electrical conductivity structure of the earth, known as geomagnetic depth sounding. The method is similar to the more familiar magnetotelluric method in that both use natural fluctuations of the earth's magnetic field as their EM source fields.