Passive geophysical prospection system based upon the detection of the vertical electric field component of telluric currents and method therefor

摘要

An improved passive telluric current system for geophysical prospecting having a sensor responsive to the electric field component of the telluric current for producing a capacitive charge, a tuner for deconvoluting the sensed electric field telluric signal, and a cross-over circuit for generating a stereo audio output containing the telluric information into a low band audio signal and into a high band audio signal in order to enhance the frequency transitions contained in the telluric signal in the ears of the operator.