Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Tytuł artykułu

Impedances for induction soundings of the Earth's mantle

Warianty tytułu
Języki publikacji
Determination of impedances is necessary in order to eliminate some shortcoming of our knowledge about structures of the exciting source fields and their fickleness. The experimental impedances for induction soundings result from the impedance boundary conditions or heuristic models. The simplified models give just a rough idea of their domain of applicability. Impedances can depend on many factors, including the exciting field structures of several source types which are present in the period range of the mantle soundings (10&sup4;-4×10&sup8; s). The problem in the mantle investigations arises if impedances measured by different methods have to be jointly inverted in order to essentially prolongate the analyzed period range and hence to increase the reliability and depth of induction soundings on land. The subject of our work is an analysis of the known magnetotelluric and magnetovariation impedances to suggest a physically substantiated approach for their joint inversions.
Opis fizyczny
Bibliogr. 56 poz.
  • Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland,
  • Aboul-Atta, O.A., and W.M. Boerner (1975), Vectoral impedance identity for the natural dependence of harmonic fields on closed boundaries, Can. J. Phys. 53, 15, 1404-1407
  • Bahr, K., N. Olsen, and T.J. Shankland (1993), On the combination of the magnetotelluric and the geomagnetic depth sounding method for resolving an electric al conductivity increase at 400 km depth, Geophys. Res. Lett. 20, 24, 2937-2940
  • Banks, R.J. (1969), Geomagnetic variations and the electrical conductivity of the upper mantle, Geophys. J. Roy. Astron. Soc. 17, 5, 457-487.
  • Bates, R.H.T., W.M. Boerner, and G.R. Dunlop (1976), An extended Rytov approximation and its significance for remote sensing and inverse scattering, Opt. Commun. 18, 4, 421-423.
  • Becken, M., and L.B. Pedersen (2003), Transformation of VLF anomaly maps into apparent resistivity and phase, Geophysics 68, 2, 497-505.
  • Becken, M., O. Ritter, and H. Burkhardt (2008), Mode separation of magnetotelluric responses in three-dimensional environments, Geophys. J. Int. 172, 1, 67-86.
  • Berdichevsky, M.N., and M.S. Zhdanov (1984), Advanced Theory of Deep Geomagnetic Sounding, Elsevier, Amsterdam, 408 pp.
  • Berdichevsky, M.N., L.L. Vanjan, and E.B. Fainberg (1969), Frequency sounding of the Earth by spherical analysis of electromagnetic variations, Geomagn. Aeron. 9, 372-374 (in Russian).
  • Berdichevsky, M.N., V.I. Dmitriev, D.B. Novikov, and V.V. Pustucan (1997), Analysis and Interpretation of Magnetotelluric Data, Dialog, Moscow State University, Moscow, 161 pp. (in Russian).
  • Berdichevsky, M.N., V.I. Dmitriev, P. Pushkarev, N. Golubtsova, and V. Kuznetsov (2006), A defence of the magnetovariational method, Proc. 18-th IAGA Workshop on “Electromagnetic Induction in the Earth”, El Vendrell, Spain, September, Extended Abstract 17-23.
  • Boerner, W.M., and H.P.S. Ahluwalia (1972), On a set of continuous wave electromagnetic inverse scattering boundary conditions, Can. J. Phys. 50, 23, 3023-3061.
  • Dmitriev, V.I., and M.N. Berdichevsky (2002), A generalized impedance model, Izvestiya, Physics Solid Earth 38, 10, 897-903.
  • Egbert, G.D., and J.R. Booker (1992), Very long period magnetotellurics at Tucson observatory: Implications for mantle conductivity, J. Geophys. Res. 97, B11, 15099-15112.
  • Fujii, I., and A. Schultz (2002), The 3D electromagnetic response of the Earth to ring current and auroral oval excitation, Geophys. J. Int. 151, 3, 689-709.
  • Guglielmi, A.V. (1984), Fore-history of the method of the magnetotelluric sounding, Fizika Zemli 30, 3, 95-96 (in Russian).
  • Guglielmi, A.V. (2009), On the Leontovich boundary condition in geoelectromagnetism, Izvestiya, Physics Solid Earth 45, 9, 740-743.
  • Guglielmi, A.V., and M.B. Gokhberg (1987), On magnetotelluric sounding in seismically active regions, Fizika Zemli 33, 11, 122-123 (in Russian).
  • Harrington, R.F. (1961), Time Harmonic Electromagnetic Fields, McGraw-Hill, New York, 480 pp.
  • Kartashov, Yu.A., G.V. Parantaev, and Yu.L. Yachno (1985), On the approximate boundary conditions on the quasi-flat conductive layer in the geomagnetic and geoelectrical tasks, Fizika Zemli 31, 9, 55-60 (in Russian).
  • Kopeikin, V. (1998), Description of the dispersive refraction effect by space-time Ray method, Wave Motion 27, 4, 307-319.
  • Kuckes, A.F. (1973), Relations between electrical conductivity of a mantle and fluctuating magnetic fields, Geophys. J. Roy. Astron. Soc. 32, 1, 119-130.
  • Kuckes, A.F., A.G. Nekut, and B.G. Thompson (1985), A geomagnetic scattering theory for evaluation of earth structure, Geophys. J. Roy. Astron. Soc. 83, 2, 319-330.
  • Kuvshinov, A., H. Utada, D. Avdeev, and T. Koyama (2005), 3D modelling and analysis of Dst C-responses in the North Pacific Ocean region, revisited, Geophys. J. Int. 160, 2, 505-526.
  • Landau, L.D., and E.M. Lifshitz (1960), Electrodynamics of Continuous Media, Pergamon Press, Oxford.
  • Leontovich, М.А. (1948), On approximate boundary conditions for an electromagnetic field on the surface of highly conductive bodies. In: “Issledovaniya porasprostraneniyu radiovoln”, USSR Acad. Sci., Moscow, 5-12 (in Russian).
  • Olsen, N. (1998), The electrical conductivity of the mantle beneath Europe derived from C-responses from 3 to 720 hr, Geophys. J. Int. 133, 2, 298-308.
  • Olsen, N., and A. Kuvshinov (2004), Modeling the ocean effect of geomagnetic storms, Earth Planet Space 56, 525-530.
  • Pek, J. (2002), Spectral magnetotelluric impedances for an anisotropic layered conductor, Acta Geophys. Pol. 50, 4, 619-643.
  • Pek, J., and F.A.M. Santos (2002), Magnetotelluric impedances and parametric sensitivities for 1-D anisotropic layered media, Computers & Geosciences 28, 8, 939-950.
  • Prichepiy, T.I. (2006), Modeling of the impedance parameters of the electromagnetic fields, Geophys. J., Kiev 28, 1, 121-129 (in Russian).
  • Prichepiy, T.I. (2007), Vector identity of impedance type and ellipses of polarization of harmonic electromagnetic field, Geophys. J., Kiev 29, 5, 124-142 (in Russian).
  • Rytov, S.M. (1940), Skin-effect calculations by the disturbance method, J. Exp. Theor. Phys. 10, 2, 180-189 (in Russian).
  • Schmucker, U. (1970), Anomalies of geomagnetic variations in the southwestern United States, Bull. Scripnogrs. Inst. Ocean. 13, 1-165.
  • Schmucker, U. (2003), Horizontal spatial gradient sounding and geomagnetic depth sounding in the period range of daily variation. In: Protokoll über das Kolloquium elektromagnetische Tiefenforschung, Kolloquium: Konigstein, 29.09–3.10, 2003, 228-237.
  • Schultz, A., R.D. Kurtz, A.D. Chave, and A.G. Jones (1993), Conductivity discontinuities in the upper mantle beneath a stable craton, Geophys. Res. Lett. 20, 24, 2941-2944.
  • Semenov, V.Yu. (1998), Regional conductivity structures of the Earth’s mantle, Publs. Inst. Geophys. Pol. Acad. Sc. C-65, 302, 122 pp.
  • Semenov, V.Yu. (2000), On the apparent resistivity in magnetotelluric sounding, Izvestiya, Physics Solid Earth 36, 1, 99-100.
  • Semenov, V.Yu., J. Vozar, and V.N. Shuman (2007), A new approach to gradient geomagnetic sounding, Izvestiya, Physics Solid Earth 43, 7, 592-596.
  • Semenov, V.Yu., J. Pek, A. Ádám, W. Jóźwiak, B. Ladanyvskyy, I.M. Logvinov, P. Pushkarev, and J. Vozar (2008), Electrical structure of the upper mantle beneath Central Europe: Results of the CEMES project, Acta Geophys. 56, 4, 957-981.
  • Senior, T.B.A. (1981), Approximate boundary conditions, IEEE Trans. Antenn. Propag. AP-29, 5, September.
  • Senior, T.B.A., and J.L. Volakis (1995), Approximate Boundary Conditions in Electromagnetics, IEE Press, London, 353 pp.
  • Shuman, V.N. (1999), Scalar local impedance conditions and the impedance tensor in processing and interpretation of a magnetotelluric experiment, Geophys. J., Kiev 19, 361-385 (in Russian).
  • Shuman, V. (2003), The general theory of geoelectromagnetic sounding systems accounting the electrodynamics of spherical sources, 3D EMIII Workshop, Adelaide.
  • Shuman, V.N. (2007), Imaginary surface vectors in multidimensional inverse problems of geoelectrics, Izvestiya, Physics Solid Earth 43, 3, 205-210.
  • Shuman, V., and S. Kulik (2002), The fundamental relations of impedance type in general theories of the electromagnetic induction studies, Acta Geophys. Pol. 50, 4, 607-618.
  • Sokolova, E.Yu., and I.M. Varentsov, and BEAR Working Group (2007), Deep array electromagnetic sounding on the Baltic Shield: External excitation model and implications for upper mantle conductivity studies, Tectonophysics 445, 1-2, 3-25.
  • Utada, H., A. Yoneda, H. Shimizu, K. Baba, and N.A. Palshin (2008), Effect of Sq variations on the electromagnetic response functions in the period range between 3 hours and 1 day. Proc. 19th IAGA Workshop on “Electromagnetic Induction in the Earth”, Beijing, China, October 23-29, p. 848.
  • Vanyan, L.L, V.A. Kuznetsov, T.V. Lyubetskaya, N.A. Palshin, T. Korja, I. Lahti, and the BEAR Working Group (2002), Electrical conductivity of the crust beneath Central Lapland, Izvestiya, Physics Solid Earth 38, 10, 798-815.
  • Velimský, J., and Z. Martinec (2005), Time-domain, spherical harmonic-finite element approach to transient three-dimensional geomagnetic induction in spherical heterogeneous Earth, Geophys. J. Int. 161, 1, 81-101.
  • Vozar, J., V.Yu. Semenov, A.V. Kuvshinov, and C. Manoj (2006), Updating the map of Earth’s surface conductance, Eos Trans. AGU 87, 33.
  • Vozar, J., and V.Yu. Semenov (2010), Compatibility of induction methods for mantle soundings, J. Geophys. Res., DOI: 10.1029/2009JB006390 (in press).
  • Wait, J.R. (1954), On the relation between telluric currents and the Earth’s magnetic field, Geophysics 19, 281-289.
  • Weckmann, U., O. Ritter, and V. Haak (2003), Images of the magnetotelluric apparent resistivity tensor, Geophys. J. Int. 155, 2, 456-468.
  • Woods, D.V., and F.E.M. Lilley (1979), Geomagnetic induction in Central Australia, J. Geomag. Geoelectr. 31, 449-458.
  • Yin Ch. (2003), Inherent nonuniqueness in magnetotelluric inversion for 1D anisotropic models, Geophysics 68, 1, 138-146.
  • Zhdanov, M.S. (1980), Taking into account of the influence of the oceans on the variable geomagnetic field by the spherical finite layer, Geomagn. Aeron. 20, 3, 523-529 (in Russian).
Typ dokumentu
Identyfikator YADDA
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.