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Polarization Characteristics of the ELF–SLF Magnetic Field Excited by a Linear Vibrator

Authors
  • Tereshchenko, E. D.1
  • Tereshchenko, P. E.2, 3
  • Sidorenko, A. E.2
  • 1 Polar Geophysical Institute, Russian Academy of Sciences, Murmansk, 183010, Russia , Murmansk (Russia)
  • 2 St. Petersburg Branch, Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation, Russian Academy of Sciences (SPbF IZMIRAN), St. Petersburg, 199034, Russia , St. Petersburg (Russia)
  • 3 St. Petersburg Scientific Center, Russian Academy of Sciences, St. Petersburg, 199034, Russia , St. Petersburg (Russia)
Type
Published Article
Journal
Seismic Instruments
Publisher
Pleiades Publishing
Publication Date
May 25, 2021
Volume
57
Issue
3
Pages
321–328
Identifiers
DOI: 10.3103/S0747923921030130
Source
Springer Nature
Keywords
License
Yellow

Abstract

AbstractThe paper considers methodological issues of solving the inverse problem of electromagnetic sound, based on the results of measuring the low-frequency magnetic field from two orthogonal antennas located on the Kola Peninsula in areas with different conductivity of the lithosphere. The polarization characteristics of the tangential magnetic field components are determined. They are compared with theoretical calculations using a plane-layered model of a wave propagation medium with homogeneous layers. Comparison of the theoretical calculations with the experimental data on the major axis of the polarization ellipse yields results consistent with existing concepts of the conductivity of the Kola Peninsula. Differences in the direction of the ellipse and ellipticity require complication in the model: the inclusion of faults in the lithosphere, as well as the anisotropy of the structures forming it.

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