ELECTROMAGNETIC MONITORING DURING THE AFTERSHOCK PERIOD OF THE 2003 CHUYA EARTHQUAKE IN THE MOUNTAIN (GORNY) ALTAI: MEASUREMENT METHODOLOGY, RESULTS
https://doi.org/10.5800/GT-2023-14-4-0714
Abstract
The article considers the method of observations, interpretation of data and results of electromagnetic monitoring with a controlled source for one of the seismically active regions of Siberia – Mountain (Gorny) Altai. The monitoring is carried out during the aftershock period in the epicentral zone of the destructive Chuya earthquake of 2003 with M=7.3. For regular observations, a measurement technique has been developed with several modifications of the transient electromagnetics method (TEM) to determine variations in electrical resistivity and anisotropy coefficient. The long-term series of these two geoelectric parameters of the section are presented, compared with the characteristics of the ongoing seismic events. The analysis shows that variations in electrical resistance and electrical anisotropy reflect the development and gradual attenuation of aftershock activity of a powerful earthquake. The advantages of the TEM method and the chosen methodology for monitoring in complex areas are reflected.
Keywords
electromagnetic monitoring,
TEM,
electrical conductivity variations,
electrical anisotropy coefficient,
seismicity characteristics,
Mountain (Gorny) Altai
Supporting agencies: The research was carried out with the financial support of the Fundamental Scientific Research Program FWZZ-2022-0025.
About the Authors
A. E. Shalaginov
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State Technical University
Russian Federation
Russian Federation
3 Academician Koptyug Ave, Novosibirsk 630090
20 Karl Marx Ave, Novosibirsk, 630073
N. N. Nevedrova
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Russian Federation
Russian Federation
3 Academician Koptyug Ave, Novosibirsk 630090
2 Pirogov St, Novosibirsk 630090
References
1. Antonov E.Yu., 2011. Mathematical Modeling of Quasi-Static Electromagnetic Fields in Dispersing and Magnetic Environments. PhD Thesis (Doctor of Physics and Mathematics). Novosibirsk, 334 p. (in Russian)
2. Antonov E.Yu., Shein A.N., 2008. Improving Inversion Quality for IP-Affected TDEM Data. Russian Geology and Geophysics 49 (10), 790–802. https://doi.org/10.1016/j.rgg.2008.01.008.
3. Babushkin S.M., Nevedrova N.N., Seleznev V.S., Liseikin A.V., 2021. Electromagnetic Research in the Altai-Sayan Mountain Region. Russian Journal of Seismology 3 (2), 7–19 (in Russian) https://doi.org/10.35540/2686-7907.2021.2.01.
4. Bataleva E.A., Batalev V.Y., Rybin A.K., 2013. On the Question of the Interrelation between Variations in Crustal Electrical Conductivity and Geodynamical Processes. Izvestiya, Physics of the Solid Earth 49, 402–410. https://doi.org/10.1134/S1069351313030038.
5. Bataleva E.A., Mukhamadeeva V.A., 2018. Complex Electromagnetic Monitoring of Geodynamic Processes in the Northern Tien Shan (Bishkek Geodynamic Test Area). Geodynamics & Tectonophysics 9 (2), 461–487 (in Russian) https://doi.org/10.5800/GT-2018-9-2-0356.
6. Danilenko V.N., Episkoposov K.S., Sergeev A.A., 2021. Experience of Using Time-Domain Electromagnetic Sounding in Underground Gas Storage Facilities. Karotazhnik 5 (311), 24–31 (in Russian)
7. Deev E.V., Nevedrova N.N., Ponomarev P.V., Zol’nikov I.D., Rusanov G.G., 2012. Geoelectrical Studies of the Chuya Basin Sedimentary Fill (Gorny Altai). Russian Geology and Geophysics 53 (1), 92–107. https://doi.org/10.1016/j.rgg.2011.12.007.
8. Electrical Prospecting Guidelines, 1984. Land Electric Survey, Borehole Electric Survey, Mine Electric Survey, Airborne Electric Survey, Marine Electric Survey. Nedra, Leningrad, 534 p. (in Russian)
9. Emanov A.F., Emanov A.A., Fateev A.V., Shevkunova E.V., Gladyshev E.A., Antonov I.A., 2021a. Aigulak Earthquake of 13.09.2019 with M=4.7 and Its Aftershocks in the Seismicity Structure of Chuya-Kurai Zone of Gorny Altai. Earthquakes in Russia in 2019. FRC GS RAS, Obninsk, p. 117–122 (in Russian)
10. Emanov A.F., Emanov A.A., Fateev A.V., Shevkunova E.V., Podkorytova V.G., Durachenko A.A., Korabelshchikov D.G., Gladyshev E.A., 2021b. Altai and Sayan. Earthquakes in Russia in 2019. FRC GS RAS, Obninsk, p. 37–44 (in Russian)
11. Epov M.I., Nevedrova N.N., Antonov E.Yu., 2006. A Method for Accounting for Characteristic Distortions of the Field Formation Electromagnetic Field Curves Obtained in Seismically Active Areas. Geophysical Bulletin 6, 8–14 (in Russian)
12. Goldman M.M., Kaufman A.A., 1971. Unsteady Electromagnetic Field in the Near Zone. Institute of Geology and Geophysics, Siberian Branch of the USSR Academy of Sciences, Novosibirsk, 48 p. (in Russian)
13. Gubatenko V.P., Ogadzhanov V.A., Nazarov A.A., 2000. Monitoring the Rock Decompaction Dynamics by Electrical Prospecting Methods. Izvestiya, Physics of the Solid Earth 36 (9), 799–805.
14. Kats V.E., 2005. Hydrogeological Peculiarities of Groundwater Conditions on the Territory of Altai Republic in 2004 (after Chuya Earthquake). Natural Resources of Mountain (Gorny) Altai 2, 61–65 (in Russian)
15. Khabinov O.G., Chalov I.A., Vlasov A.A., Antonov E.Yu., 2009. The System for Interpretation of EMS Transient Electromagnetic Sounding Data. In: GEO-Siberia–2009. Proceedings of the V International Scientific Congress (April 20–24, 2009). Siberian State University of Geosystems and Technologies, Novosibirsk, p. 108–113 (in Russian)
16. Lu J., Qian F., Zhao Y., 1999. Sensitivity Analysis of the Schlumberger Monitoring Array: Application to Changes of Resistivity Prior to the 1976 Earthquake in Tangshan China. Tectonophysics 307 (3–4), 397–405. https://doi.org/10.1016/S0040-1951(99)00101-8.
17. Nevedrova N.N., Epov M.I., Antonov E.Yu., Dashevskii Yu.A., Duchkov A.D., 2001. Reconstruction of the Deep Structure of the Chuya Depression of Mountain (Gorny) Altai from Electromagnetic Sounding Data. Russian Geology and Geophysics 42 (9), 1399–1416 (in Russian)
18. Nevedrova N.N., Sanchaa A.M., 2011. Geoelectric Structure of Kurai Depression of Mountain (Gorny) Altai Taking into Account Tectonic Features. In: L.Ya. Erofeev, V.I. Isaev (Eds), Geophysical Methods in Subsurface Exploration. Publishing House of Tomsk Polytechnic University, Tomsk, p, 57–60 (in Russian)
19. Nevedrova N.N., Sanchaa A.M., Shalaginov A.E., Babushkin S.M., 2019. Electromagnetic Monitoring in the Region of Seismic Activization (on the Gorny Altai (Russia) Example). Geodesy and Geodynamics 10 (6), 460–470. https://doi.org/10.1016/j.geog.2019.06.001.
20. Nevedrova N.N., Shalaginov A.E., 2015. Monitoring of Electromagnetic Parameters in the Seismic Activity Zone of Mountain (Gorny) Altai. Geophysics 1, 31–40 (in Russian)
21. Rymarczyk T., Kłosowski G., Tchórzewski P., Cieplak T., Kozłowski E., 2019. Area Monitoring Using the ERT Method with Multisensor Electrodes. Przeglad Elektrotechniczny 95 (1), 153–156. https://doi.org/10.15199/48.2019.01.39.
22. Sanchaa A.M., Nevedrova N.N., Shtabel N.V., 2021. Deep Structure of the Fault Zone in the Mukhor-Tarkata Site of the Chuya Depression According to Non-Stationary Electromagnetic Sounding Data Using Three-Dimensional Modeling. Geology and Mineral Resources of Siberia 2 (46), 67–73 (in Russian) https://doi.org/10.20403/2078-0575-2021-2-67-73.
23. Shalaginov A.E., 2017. Variations of Electrophysical Parameters from the Non-Stationary Electromagnetic Sounding Data in the Zone of Seismic Activation (Mountain (Gorny) Altai). PhD Thesis (Candidate of Geology and Mineralogy). Novosibirsk, 154 p. (in Russian)
24. Shalaginov A.E., Nevedrova N.N., 2015. Geoelectric Structure on the Site of Regular Observations of Electromagnetic Parametrs in Chuya Basin Gorny Altai. Vestnik Altajskoj Nauki 2 (24), 310–318 (in Russian)
25. Shalaginov A.E., Nevedrova N.N., Shaparenko I.O., 2018. Variations in Electrophysical Parameters Estimated from Electromagnetic Monitoring Data as an Indicator of Fault Activity. Geodynamics & Tectonophysics 9 (1), 93–107 (in Russian) https://doi.org/10.5800/GT-2018-9-1-0339.
26. Shaparenko I.O., Nevedrova N.N., 2018. Fault Zone Monitoring by Electrotomography (Based on Mountain (Gorny) Altai). In: Problems of Geodynamics and Geoecology of Inland Orogens. Proceedings of the VII International Symposium (June 19–24, 2017). RS RAS, Bishkek, p. 439–443 (in Russian)
27. Shein A.N., 2010. Separation of Polarization and Induction Processes and Joint Inversion of Pulse Electrical Prospecting Data. Brief PhD Thesis (Candidate of Physics and Mathematics). Novosibirsk, 17 p. (in Russian)
28. Sherman S.I., Bornyakov S.A., Buddo V.Yu., 1983. Areas of Dynamic Influence of Faults (Modelling Results). Nauka, Novosibirsk, 112 р. (in Russian)
29. Stanica D., Stanica M., 2007. Electromagnetic Monitoring in Geodynamic Active Areas. Acta Geodynamica et Geomaterialia 4 (1), 99–107.
30. Vanyan L.L., 1997. Electromagnetic Sounding. Nauchny Mir, Moscow, 218 p. (in Russian)
31. Zheltenkova N.V., Gagarin V.E., Koshurnikov A.V., Nabiev I.A., 2020. Regime Geocryological Observations of the High Altitude Mountain Passes of Tien Shan. Arctic and Antarctica 3, 25–43 (in Russian]. https://doi.org/10.7256/2453-8922.2020.3.33535.
32. Zolnikov I.D., 2010. The Role of Glaciations and Glacial Super-Floods in the Geological Structure of Sedimentary Complexes of the Upper Half of the Neopleistocene in the Altai Mountains and the Altai Plain. Brief PhD Thesis (Doctor of Geology and Mineralogy). Novosibirsk, 32 p. (in Russian)
Review
For citations:
Shalaginov A.E., Nevedrova N.N. ELECTROMAGNETIC MONITORING DURING THE AFTERSHOCK PERIOD OF THE 2003 CHUYA EARTHQUAKE IN THE MOUNTAIN (GORNY) ALTAI: MEASUREMENT METHODOLOGY, RESULTS. Geodynamics & Tectonophysics. 2023;14(4):0714. (In Russ.) https://doi.org/10.5800/GT-2023-14-4-0714
Views:
440
Email this article 