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About the journal

NAUKA I TEKHNOLOGICHESKIE RAZRABOTKI (SCIENCE AND TECHNOLOGICAL DEVELOPMENTS), ISSN: 2079-5165, eISSN: 2410-7948, DOI: 10.21455/std; https://elibrary.ru/title_about.asp?id=32295; http://std.ifz.ru/. The journal was founded in 1992.

Inverse problem of magnetotelluric sounding
in the bear experiment on the fennoscandian shield

M.S. Petrishchev

St. Petersburg Branch of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation
of the Russian Academy of Sciences (IZMIRAN), St. Petersburg, Russia

e-mail: ms_petr@mail.ru

Highlights

– Joint interpretation of the data of three types of induction soundings is considered

– Three methods for solving the inverse problem for the BEAR experiment is discussed

– Controlled transformation allows increasing the resolution of the depth

Abstract. The paper considers methodological issues of solving the inverse problem of electromagnetic sounding data. A critical analysis of the previously obtained joint solution for the results of three types of sounding in the fields of controlled and natural sources is carried out. This solution was obtained with the usage of several postulates obtained from the experimental data. It is used the data of the experiments completed on the Fennoscandian shield, the analysis is focused for B27 station from BEAR experiment located in Central Finland. Three methods for joint solving the inverse problem for the results of magnetovariation, magnetotelluric BEAR and controlled sources FENICS soundings is discussed. The use of controlled transformation with a change in geometry of the section allows increasing the resolution of the depth.

Keywords: Fennoscandian shield, electromagnetic sounding, inverse problem, inversion, controlled transformation

Cite this article as: Petrishchev M.S. Inverse problem of magnetotelluric sounding in the BEAR experiment on the Fennoscandian shield, Nauka i Tekhnologicheskie razrabotki (Science and Technological Developments). 2020, vol. 99, no. 1, pp. 15–30. [in Russian]. https://doi.org/10.21455/std2020.1-3

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About the author

PETRISHCHEV Maxim Sergeevich – St. Petersburg Branch of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian Academy of Sciences. 199034, St. Petersburg, Universitetskaya nab., 5, lit. B. E-mail: ms_petr@mail.ru