Appreciation of spherically symmetric models of electrical conductivity |
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Authors: | J. Pěčová Z. Martinec K. Pěč |
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Affiliation: | (1) Geophysical Institute, Czechosl. Acad. Sci., Boní II, 141 31 Prague 4;(2) Department of Geophysics and Meteorology, Faculty of Mathematics and Physics, Charles University, V Holeovikách 2, 180 00 Prague 8 |
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Abstract: | A procedure is suggested of a more effective and faster computation of the impedance, the transfer function and amplitudes of the induced field in a spherically symmetric model of the electrical conductivity. The existing induction data have been supplemented by about 80 new values derived from the analysis of daily means. The fit of the existing 1-D models of the electrical conductivity of the mantle to the set of induction data is investigated. The characteristic equation for the free electromagnetic oscillations of a radially inhomogeneous Earth is derived and its possible importance in solving the inverse problem of electric conductivity is pointed out. |
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Keywords: | Electrical conductivity Earth's models electromagnetic induction free electromagnetic oscillations |
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