Summary
Further calculations for the mode characteristics for an idealized model of the earth crust waveguide have been carried out. Specifically, we consider a homogeneous waveguide region bounded below by a homogeneous transition layer whose conductivity is intermediate between that of the main waveguide region and the bottom conductive region. It is shown that the presence of the transition layer usually increases the attenuation rate of the dominant modes although there are some interesting exceptions.
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References
J. G. Heacock (editor).The structure and physical properties of the earth's crust, Geophys. Mono. Series14, (American Geophysical Union, Washington, D.C., 1971).
B. J. Mitchell andM. Landisman,Electrical and seismic properties of the earth's crust in the southwestern Great Plains of the U.S.A., Geophys.36 No. 2, 363–381, 1971.
K. P. Spies andJ. R. Wait,Attenuation calculations for a two-layer earth-crust waveguide for sub-surface electromagnetic propagation, in ONR Technical Report No. 2, available from the National Technical Information Service, U.S. Department of Commerce, Springfield, Virginia 22151, AD 726 754 (1971).
J. R. Wait andK. P. Spies,Electromagnetic propagation in an idealized earch crust waveguide, Part I (1972).
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Wait, J.R., Spies, K.P. Electromagnetic propagation in an idealized earth crust waveguide, part II. PAGEOPH 101, 188–193 (1972). https://doi.org/10.1007/BF00876782
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DOI: https://doi.org/10.1007/BF00876782