Advertisement

Optimal Methods and Parameters of Electromagnetic Monitoring in Seismically Active Areas

  • Nina Nevedrova
  • Aleksandr ShalaginovEmail author
Conference paper
Part of the Springer Proceedings in Earth and Environmental Sciences book series (SPEES)

Abstract

The article describes the methods of observation and data interpretation of electromagnetic methods with a controlled source for seismically active regions of Siberia. The approach proposed by the laboratory of electromagnetic Fields of IPGG SB RAS is being developed to estimate the variations of geoelectric parameters by determining them by solving an inverse problem. An analysis the results of the interpretation of VES monitoring data using the integral electrical conductivity parameter presented for the site in the Selenginskaya depression of the Baikal rift zone. For the territory of Gorny Altai, a measurement technique demonstrated with several modifications of the TEM method for determining variations of electrical resistivity and anisotropy coefficient in the aftershock period of the 2003 Chuya earthquake. Attracting the electrical anisotropy coefficient expands the informativeness of the study, as it allows monitoring variations associated with changes in the seismic regime and allows assess the degree of activity of fault zones.

Keywords

Gorny altai Baikal rift zone Vertical electrical sounding Transient electromagnetic sounding Electrical conductivity variation Anisotropy coefficient 

Notes

Acknowledgements

This work was supported by the project of Basic Scientific Research No. 0331-2019-0015 and of the Russian Foundation for Basic Research, grant 17-05-00654.

References

  1. 1.
    Mogilatov, V.S.: Poorly studied phenomena in geoelectrics. J. Min. Inst. 222, 783–788 (2016) (in Russian)Google Scholar
  2. 2.
    Nevedrova, N.N., Shalaginov, A.E.: Monitoring of electromagnetic parameters in the seismic activity zone of Gorny Altai. Russ. Geophys. 1, 31–40 (2015) (in Russian)Google Scholar
  3. 3.
    Antonov, E.Y., Shein, A.N.: Improving inversion quality for IP-affected TDEM data. Russ. Geol. Geophys. 49(10), 1046–1062 (2008) (in Russian)ADSCrossRefGoogle Scholar
  4. 4.
    Shalaginov, A.E., Nevedrova, N.N., Shaparenko, I.O.: Variations in electrophysical parameters estimated from electromagnetic monitoring data as an indicator of fault activity. Geodyn. Tectonophys. 9(1), 93–107 (2018) (in Russian)CrossRefGoogle Scholar
  5. 5.
    Nevedrova, N.N., Epov, M.I.: Electromagnetic monitoring in seismically active regions of Siberia. Geophys. J. 34(4), 209–223 (2012) (in Russian)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Trofimuk Institute of Petroleum Geology and GeophysicsNovosibirskRussia

Personalised recommendations