POLARIZATION CHARACTERISTICS OF ELF-SLF MAGNETIC FIELD EXCITED BY A LINEAR VIBRATOR
1 Polar Geophysical Institute 2 St. Petersburg Branch of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences 3 St. Petersburg Scientific Center of the Russian Academy of Sciences
Journal: Science and technological developments
Keywords: ELF, propagation of radio waves, polarization characteristics, electromagnetic field, conductivity, lithosphere
Аnnotation: The paper considers methodological issues of solving the inverse problem of electromagnetic sound. The results of measuring a low-frequency magnetic field from two orthogonal antennas located on the Kola Peninsula in areas with different conductivity of the lithosphere are considered. The polarization characteristics of the tangential components of the magnetic field are determined. They are compared with theoretical calculations using a plane-layered model of a wave propagation medium with homogeneous layers. It is shown that the results of comparison of theoretical calculations and experimental data on the major axis of the polarization ellipse are in agreement with existing concepts of the conductivity of the Kola Peninsula. Differences in the direction of 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.