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Geophysical subsurface probing with radio-frequency interferometry (1974)

Kong, J. A. ; Tsang, L. ; Simmons, G.

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Publication Date: 2019-06-27

Description: The radio-frequency interferometry method can be used to probe interiors of celestial bodies and terrestrial areas with low conductivity. In order to interpret the interference patterns, a theoretical study is made of the electromagnetic fields due to a dipole antenna on the surface of a horizontally stratified n-layered medium. Three approaches are used to calculate the interference patterns: direct numerical integration, asymptotic evaluation by the saddle point method, and a residue series approach. The asymptotic approach leads to the geometrical-optics interpretation. The residue approach leads to modal analysis. The validity of the formulation is checked by comparisons with analog model tank experiments and actual field data obtained from glaciers.

Keywords: INSTRUMENTATION AND PHOTOGRAPHY

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