Extensometer use for oscillatory processes study in a wide frequency range


V.Yu. Timofeev1, D.G. Ardyukov1, A.V. Timofeev1, E.V. Boyko1, V.M. Semibalamut2, Y.N. Fomin2, S.V. Panov3, M.D. Parushkin3


1 Trofimuk Institute of Petroleum Geology and Geophysics of SB RAS, Novosibirsk, Russia

2 Federal Research Center “United Geophysical Survey of the Russian Academy of Sciences”, Siberian Branch, Novosibirsk, Russia

3 Institute of Laser Physics SB RAS, Novosibirsk, Russia


Corresponding author: V.Yu. Timofeev, timofeevvy@ipgg.sbras.ru


Abstract. The results of measurements of linear strains in adits on the bases of 1–100 meters allow us to study vibrational processes in a wide frequency range from tens of hertz to several years. In this case, both seismic waves from earthquakes and long-period signals associated with tectonic processes are recorded. The paper presents the results of measurements by tube and laser extensometers in the adit of the Talaya seismic station (coordinates 51.68° N and 103.65° E, Baikal region). The results of determining the elastic moduli of rocks from observations by extensometers, microbarographs, and petrophysical methods are presented. The study of intrinsic and tidal oscillations allows us to evaluate the integral rheological parameters of the Earth. The results of the analysis show good agreement with modern models of the Earth’s internal structure. Coseismic and long-term variations of volumetric deformation in the time of strong regional earthquakes are presented.


Keywords: tube extensometer, laser extensometer, Baikal region, Seiche of Baikal Lake, free Earth oscillation and tidal variation, earthquakes, volume deformation variations


About the authors


TIMOFEEV Vladimir Yurievich – Doctor of Physical and Mathematical Sciences, Head of Laboratory, Chief Researcher, Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch of the Russian Academy of Sciences. Russia, 630090, Novosibirsk, prosp. Ak. Koptyuga, 3. E-mail:
timofeevvy@ipgg.sbras.ru


ARDYUKOV Dmitriy Gennadievich – Candidate of Physical and Mathematical Sciences, Senior Researcher, Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch of the Russian Academy of Sciences. Russia, 630090, Novosibirsk, prosp. Ak. Koptyuga, 3. E-mail:
ardyukovdg@ipgg.sbras.ru


TIMOFEEV Anton Vladimirovich – Candidate of Physical and Mathematical Sciences, Research Fellow, Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch of the Russian Academy of Sciences. Russia, 630090, Novosibirsk, prosp. Ak. Koptyuga, 3. E-mail:
timofeevav@ipgg.sbras.ru


BOYKO Elena Valerievna – Candidate of Physical and Mathematical Sciences, Research Fellow, Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch of the Russian Academy of Sciences. Russia, 630090, Novosibirsk, prosp. Ak. Koptyuga, 3. E-mail: boykoev@ipgg.sbras.ru


SEMIBALAMUT Vladimir Mikhailovich Candidate of Physical and Mathematical Sciences, Head of Branch, Federal Research Center "United Geophysical Service of the Russian Academy of Sciences”, Siberian Branch. 630090, Novosibirsk, prosp. Ak. Lavrentieva, 13/3. E-mail: wladim28@yandex.ru


FOMIN Yurii Nikolaevich – Chief of Laser sector, Federal Research Center “United Geophysical Service of the Russian Academy of Sciences”, Siberian Branch. Novosibirsk, prosp. Ak. Lavrentieva, 13/3. E-mail: fominy@mail.ru


PANOV Sergei VladimirovichSenior Researcher, Institute of Laser Physics of Siberian Branch of the Russian Academy of Sciences. 630090, Novosibirsk, prosp. Ak. Lavrentieva, 13/3. E-mail: lss@laser.nsc.ru


PARUSHKIN Michel DmitrievichJunior Researcher, Institute of Laser Physics of Siberian Branch of the Russian Academy of Sciences. 630090, Novosibirsk, prosp. Ak. Lavrentieva, 13/3. E-mail: mihail.parushkin@yandex.ru


Cite this article as: Timofeev V.Yu., Ardyukov D.G., Timofeev A.V., Boyko E.V., Semibalamut V.M., Fomin Y.N., Panov S.V., Parushkin M.D., Extensometer use for oscillatory processes study in a wide frequency range, Seismicheskie Pribory, 2020, vol. 56, no. 1, pp. 5–24. (in Russian). https://doi.org/10.21455/si2020.1-1


English translation of the article will be published in Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online), https://link.springer.com/journal/11990), 2021, Volume 57.



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