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THE ROTATING CURRENT DIPOLE METHOD ‐ A FIELD TEST *
Author(s) -
HALL S. H.,
DAVIS J.
Publication year - 1977
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1977.tb01171.x
Subject(s) - amplitude , dipole , current (fluid) , depth sounding , phase (matter) , magnetic field , geology , magnetic dipole , transmitter , optics , physics , geophysics , electrical engineering , channel (broadcasting) , oceanography , engineering , quantum mechanics
A bstract The outputs and neutral of a three phase generator are converted to six amplitude variable phases in a 3.5 kW 400 Hz transmitter. These outputs are applied to six groundimplanted electrodes, producing a horizontally rotating current dipole in the subsurface. An investigation of the radiation pattern in the vertical magnetic field indicates, in symmetry and closure control, considerable advantages in this form of galvanic energization. These include optimization of inductive anomalies and the ability to interpret phase observations on a spatial basis in depth sounding and orebody location.