Abstract
Magnetovariation methods, which are applicable to study the mantle conductivity, require long lasting registration of natural magnetic field variations. Such data usually can be recorded in stationary conditions on geomagnetic observatories. The magnetotelluric and magnetovariation measurements have been carried out at seven semi-permanent sites on Ukrainian territory for approximately 10–15 years by the Ukrainian State Geological Research Institute as well as the S.I. Subbotin Institute of Geophysics of the National Academy of Sciences of Ukraine for monitoring the effects and phenomena related to electromagnetic field. Since the quality of records was acceptable, we used these data to study the Earth’s mantle conductivity peculiarities to obtain the information on sites remote from geomagnetic observatories. The Z-H method was applied to collected data to estimate the magnetovariaton transfer functions, which were concatenated with magnetotelluric ones and further inverted by the 1D OCCAM algorithm to obtain the geoelectrical cross sections for the measuring sites. To extend the region under study and to obtain more reliable results, similar data from three Ukrainian geomagnetic observatories in Kyiv, Lviv and Odessa were included in this study. Obtained conductivity models were related to the known geological structure in the upper and middle mantle beneath the Ukrainian territory.
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References
Banks R., 1969. Geomagnetic variations and the electrical conductivity of the upper mantle. Geophys. J.R. Astr. Soc., 17, 457–487.
Constable S.C., Parker R.L. and Constable C.G., 1987. Occam’s inversion: a practical algorithm for the inversion of electromagnetic data. Geophysics, 52, 289–300.
Fujii I. and Schultz A., 2002. The 3D electromagnetic response of the Earth to ring current and auroral oval excitation. Geophys. J. Int., 151, 689–709.
Gordienko V. and Logvinov I., 2011. The global asthenosphere. Izv.-Phys. Solid Earth, 47, 109–116, DOI: https://doi.org/10.1134/S4069351311010046.
Harwood J.M. and Malin S.R.C., 1977. Sunspot cycle influence on the geomagnetic field. Geophys. J.R. Astr. Soc., 50, 605–619.
Jozwiak W. and Semenov V.Yu., 1998. Deep geoelectrical structure estimation in the West Antarctic. Acta Geophys. Pol., 46, 61–67.
Ladanivskyy B.T., Semenov V.Yu. and Logvinov I.M., 2010. Magnetovariational sounding method of the Eath’s mantle at period band 104–105 s. Geofizicheskiy Zhurnal, 32(3), 50–59 (in Russian).
Olsen N., 1992. Day-to-day C-response estimation for Sq from 1 cpd to 6 cpd using the Z-Y method. J. Geomag. Geoelectr., 44, 433–447.
Olsen N., 1998. The electrical conductivity of the mantle beneath Europe derived from C-response from 3 h to 720 h. Geophys. J. Int., 133, 298–308.
Pushcharovsky Yu.M. and Pushcharovsky D.Yu., 2010. Geology of the Earth’s Mantle. GEOS Moscow, Russia, 140 pp. (in Russian).
Schultz A. and Larsen J.C., 1987. On the electrical conductivity of the mid-mantle — I. Calculation of equivalent scalar magnetotelluric response functions. Geophys. J.R. Astr. Soc., 88, 733–761.
Semenov V.Yu., 1998. Regional Conductivity Structures of the Earth’s Mantle. Publs. Inst. Geophys. Pol. Acad. Sci., C-65(302). Warsaw, Poland, 122 pp.
Semenov V.Yu., Pek J., Adam A., Jozwiak W., Ladanyvskyy B., Logvinov I., Pushkarev P. and Vozar J., 2008. Electrical structure of the upper mantle beneath Central Europe: Results of the CEMES project. Acta Geophys., 56, 957–981.
Semenov V.Yu., Ladanivskyy B.T. and Nowożyński K., 2011. New induction sounding tested in Central Europe. Acta Geophys., 59, 815–832. DOI: https://doi.org/10.2478/s11600-011-0030-4.
Srebrov B., Ladanyyvskyy B. and Logvinov I., 2013. Application of space generated geomagnetic variations for obtaining geoelectrical characteristics at Panagyurishte. C. R. Acad. Bulg. Sci., 66, 857–867.
Tauzin B., Debayle E. and Wittlinger G., 2007. Constrainst on the mantle transition zone structure from P-to-Sv converted waves (https://doi.org/www.mantleplumes.org/TransitionZone3.html).
Xu Y., Shankland T.J. and Poe B.T. 2000. Laboratory-based electrical conductivity in the Eart’s mantle. J. Geophys. Res.-Solid Earth, 105, 27865–27875.
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Ladanivskyy, B., Logvinov, I. & Tarasov, V. Earth mantle conductivity beneath the Ukrainian territory. Stud Geophys Geod 63, 290–303 (2019). https://doi.org/10.1007/s11200-018-0347-4
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DOI: https://doi.org/10.1007/s11200-018-0347-4