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ELECTROMAGNETIC FIELDS DUE TO A THIN RESISTIVE LAYER *
Author(s) -
PASSALACQUA H.
Publication year - 1983
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.1365-2478.1983.tb01099.x
Subject(s) - resistive touchscreen , transverse plane , electric field , layer (electronics) , materials science , excited state , radius , condensed matter physics , boundary layer , dipole , physics , optics , atomic physics , mechanics , composite material , electrical engineering , computer security , structural engineering , quantum mechanics , computer science , engineering
A bstract Using approximate boundary conditions, expressions for electromagnetic fields have been derived for a thin, highly resistive layer lying between two homogeneous layers excited by an electric dipole grounded on the surface of the earth. The variations of the fields with the parameter T/T 1 (ratio of the transverse resistance of the thin layer to the transverse resistance of the first layer) were studied in relation to frequency, time, the normalized separation source—receiver, and the angle between the source and the radius to the observation point. For a value of h 2 /h 1 (ratio of thickness of second layer to the thickness of the first layer) approximately equal to 0.2, the general three‐layer medium case gives the same results as this approach. It was found that the electric fields have a very strong dependence on the parameter T (transverse resistance) which characterizes the thin, highly resistive layer. However, the magnetic fields depend only very weakly on this parameter.