Preliminary results of deep magnetotelluric sounding on geophysical base of moscow university in Kaluga region
About authors
- 1 — post-graduate student Moscow State University
- 2 — Ph.D. associate professor Moscow State University
- 3 — research assistant Moscow State University
Abstract
Since May 2011 we have collected long-period magnetotelluric (MT) data in non-magnetic pavilion on geophysical base of Moscow University in Kaluga region. Three sets of electrical lines with different types of electrodes were installed. Different groups of authors have made processing of MT records, calculation of apparent resistivity curves. These curves were compared with apparent resistivity curve obtained on magnetovariational data of Moscow observatory. The 1D inverse problem was solved for the deep part of the generalized curve (T > 30 s). In particular we succeeded in finding preliminary conductivity values on the depth of crust, upper and middle mantle.
Область исследования:
(Archived) Application of the modern electric exploratory technologies in prospecting of mineral deposits
Keywords:
magnetotelluriсs
magnetovariational sounding
East European craton
asthenosphere
mid-mantle layer
References
- Constable S.C., Parker R.L., Constable C.G. Occam's inversion; a practical algorithm for the inversion of electromagnetic data // Geophysics. 1987. 52. P.289-300.
- Kuvshinov A.V. Deep electromagnetic studies from land, sea, and space. Progress status in the past 10 years // IAGA WG 1.2 on Electromagnetic Induction in the Earth 20th Workshop Review Paper. Giza, Egypt, Septem- ber 18-24, 2010.
- Larsen J.C. Noise reduction in electromagnetic time series to improve detection of seismic-induced signals // J.Geomag. Geoelectr, 1997. 49. P.1257-1265.
- Parker R.L. The inverse problem of electromagnetic induction: existence and construction of solutions based on incomplete data // J.Geophys. Res. 1980. 85. P.4421-4428.
- Ringwood A.E. Composition and Petrology of the Earth’s Mantle // McGraw-Hill. New York, 1975.
- Schuster A., Lamb H. The diurnal variation of terrestrial magnetism // Phi. Trans. Roy. Soc. London. 1889. 45. P.481-486.
- Semenov V.Yu., Adam A., Hvozdara M., Wesztergom V. Geoelectrical structures of the Earth's mantle in Pannonian Basin // Acta Geod. et Geophys. Hungarica. 1997. 32, No 1-2.
- Semenov V.Yu., Pek J., Ádám A., Jóźwiak W., Ladanyvskyy B., Logvinov I.M, Pushkarev P., and Vozar J. Electrical structure of the upper mantle beneath Central Europe: Results of the CEMES project //Acta Geophys. 2008. 56, 4. P.957-981, DOI: 10.2478/s11600-008-0058-2.
- Semenov V.Yu., Ladanivsyy B., Novozynski K. New Induction Sounding Tested in Central Europe // Acta Geophysica. 2011. V.59, № 5. P.815-832.
- Shimizu H., Yoneda A., Baba K., Utada H. and Palshin N.A. Sq effect on the electromagnetic response functions in the period range between 104 and 105 s // Geoph. J. Int. 2011. V. 186. P.193-206.
- Varentsov Iv.M., Sokolova E.Yu., Martanus E.R. EMTESZPomerania WG. Array view on EM transfer functions in the EMTESZPomerania project. Study of geological structures containing wellconductive complexes in Poland // Publ. Inst. Geoph., Pol. Acad. Sci. C95(386). 2005. P.107–121.
- Varentsov Iv.M. Arrays of simultaneous electromagnetic soundings: design, data processing and analysis. Electromagnetic sounding of the Earth’s interior. Methods in geochemistry and geophysics. V. 40. / Ed. V.V.Spichak // Elsevier. 2007. P.263–277.
- Utada H., Koyama T., Shimizu H. and Chave A.D. A semiglobal reference model for electrical conductivity in the mid-mantle beneath the north Pacific region // Geophys. Res. Lett. 2003. 30, 43-1.
- Zhdanov M.S., Green A., Gribenko A., Cuma M. Large-scale three-dimensional inversion of EarthScope MT data using the integral equations method // Физика Земли. 2010. № 8. С.27-35.
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