The asthenosphere of Ukraine according to geoelectric studies

Authors

  • T.K. Burakhovych S.I. Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine, Ukraine
  • V.A. Ilienko S.I. Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine, Ukraine
  • A.M. Kushnir S.I. Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine, Ukraine
  • A.Y. Stolpakov S.I. Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine, Ukraine
  • E.M. Tonkovyd S.I. Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine, Ukraine
  • A.M. Bondar S.I. Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine, Ukraine

DOI:

https://doi.org/10.24028/gj.v47i2.322502

Keywords:

electromagnetic research, resistivity, asthenosphere, models of different geological and tectonic regions of Ukraine

Abstract

For the first time, a model-scheme of the geoelectric asthenosphere was created, the parameters of were obtained by generalizing the models built based on experimental electromagnetic data. The parameters of three «normal» sections of ρn for geological regions of Ukraine of different ages are confirmed. High electrical conductivity anomalies in the upper mantle have a complex configuration, different intensity and depth, and do not always correspond to the geology. The asthenosphere in the southwestern megablocks, local areas of the Ingul megablock of the Ukrainian shield, as well as the southern part of the Volyn-Podilsky Plate is picked fragmentarily from 50―70 to 120―160 km with anomalous resistivity of 20―50 Ohm·m. Local objects in the Pripyat-Dnipro-Donetsk Depression have similar parameters. The Scythian Plate has anomalous areas: crustal mantle (30―40 to 60 km deep with a resistivity of 10 Ohm·m) and upper mantle (60―90 km deep with a resistivity of 100 Ohm·m). In the Carpathian region, the asthenosphere is heterogeneous, probably consisting of regions that differ in resistivity and may branch with depth. A general deepening of its upper boundary to the northeast from 40 to 90―100 km has been confirmed.

References

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Published

2025-04-07

How to Cite

Burakhovych, T., Ilienko, V., Kushnir, A., Stolpakov, A., Tonkovyd, E., & Bondar, A. (2025). The asthenosphere of Ukraine according to geoelectric studies. Geofizicheskiy Zhurnal, 47(2). https://doi.org/10.24028/gj.v47i2.322502

Issue

Vol. 47 No. 2 (2025)

Section

Conferences

License

Copyright (c) 2025 Т.К. Бурахович, А.В. Ільєнко, А.М. Кушнір, А.Ю. Столпаков, Є.М. Тонковид, А.М. Бондар

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