Abstract
A quasistatic analytical approach is applied to the magnetotelluric responses of an idealized two-dimensional (2-D) horizontally nonhomogeneous model consisting of any number of segments with electrical anisotropic conductivity underlain by a perfect conductor basement. For this model, the magnetic field vector is everywhere parallel to the vertical contacts and to the Earth’s surface. The solution to the magnetotelluric responses of the model are derived, and detailed expressions for the electric and magnetic fields for a specialized case are presented. The resulting quasianalytical solution is then given for use in validation of numerical algorithms.
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Acknowledgements
Dr. J. T. Weaver is deeply acknowledged for making his computer code 2DANALB publicly available. The authors gratefully acknowledge Dr. Michael Commer (Editor), Dr. Colin Farquharson (reviewer), and another anonymous reviewer for their thorough reading of the manuscript and their insightful questions and constructive comments, which certainly improved the quality of this paper. Q.L. would like to thank the National Natural Science Foundation of China (grant no. 41776079) and the Scientific Research Fund of the Second Institute of Oceanography, SOA (grant no. JG1705) for funding. Y.C. greatly acknowledges the National Natural Science Foundation of China (grant nos. 40774035 and 41474054) for funding.
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Qin, L., Yang, C. Magnetotelluric Responses of a Horizontally Nonhomogeneous Model of the Earth with Anisotropic Conductivity Structures. Pure Appl. Geophys. 176, 1691–1700 (2019). https://doi.org/10.1007/s00024-018-2040-5
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DOI: https://doi.org/10.1007/s00024-018-2040-5