Near surface geophysical surveys with a high frequency mutual impedance measuring system |
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| Authors: | Grzegorz Beziuk |
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| Institution: | (1) Department of Electronics and Communication Engineering, National Institute of Technology, Durgapur, India |
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| Abstract: | Relationships for the mutual impedance of horizontal coplanar, vertical coplanar, perpendicular and vertical coaxial loop
antenna arrays operating at a high frequency, located over a layered conducting medium, have been derived. The relationships
take into account the occurrence of displacement currents in both the free space and the conducting medium. The relations
can be used for calculating the earth parameters in geophysical prospecting. The use of high frequency antenna array makes
it possible to determine distributions of apparent resistivity as well as apparent electrical permittivity. The potential
application of the measurements of mutual impedance of loop antennas operating at a high frequency to the geophysical examinations
is presented. The measuring system developed for this purpose is described. A simple method of interpreting the mutual impedance
measurements to obtain the traces of apparent resistivity and apparent permittivity of the investigated earth is given. |
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