Vestnik КRAUNC. Fiz.-Mat. nauki. 2024. vol. 46. no. 1. P. 134-164. ISSN 2079-6641

Research Article
Full text in Russian
MSC 86А25

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Short Temporal Variations of Electrotelluric Field in the Vicinity of the Earthquake Source-Site in the Sakhalin Island

A. S. Zakupin^\ast, I. P. Dudchenko, L. M. Bogomolov, S. A. Gulyakov, A. I. Kazakov, N. S. Stovbun

Institute of Marine Geology and Geophysics, FEB RAS, 693022, Yuzhno-Sakhalinsk, Nauki str., 1B, Russia

Abstract. The work represents the results of analysis of electro-telluric potentials data obtained at the Yuzhno-Sakhalinsk test site (deployed in June 2023on the territory of the IMGG FEB RAS). Unexpectedly, a new kind of signals – series of quasiperiodic spikes (pulses) in night times were found in first few months after start of recording. Signals of 4-5 s length and of 130-150 s repetition period have a various waveform, which is derived from some primary quasi-sinusoidal signal. Such series were recorded from July 20 to September 11, 2023, and their average duration was nearly 8-9 hours. No episodes were found after September 12, up to December 20. The maximal intensity of the signals and the series as a whole was revealed in the period from 5 to 10 August. During this period the moderate earthquake M=3.8 occurred on 9 August, 2003 in the vicinity of measurement point (within a circular zone of 0.25 degrees radius around the test site) It was the strongest event from pair of that occurred in the given zone, the magnitudes were being M = 3.8 (08/09/2023) and M = 3.1 (09/19/2023). No similar series were observed before the second earthquake, being the weaker. Origination of quasiperiodic pulses series could be related to the preparedness of earthquake source – site. However extra surveys are required to proof this hypothesis.

Key words: series of electrical signals, precursor, telluric field, earthquake, distorted signal.

Received: 15.02.2023; Revised: 26.02.2024; Accepted: 27.02.2024; First online: 07.03.2024

For citation. Zakupin A. S., Dudchenko I.P., Bogomolov L. M. et al. Short temporal variations of electrotelluric field in the vicinity of the earthquake source-site in the Sakhalin island. Vestnik KRAUNC. Fiz.-mat. nauki. 2024, 46: 1, 134-164. EDN: FIGWJO.

Funding. The work was not carried out within the framework of funds.

Competing interests. There are no conflicts of interest regarding authorship and publication.

Contribution and Responsibility. All authors contributed to this article. Authors are solely responsible for providing the final version of the article in print. The final version of the manuscript was approved by all authors.

^\astCorrespondence: E-mail:

The content is published under the terms of the Creative Commons Attribution 4.0 International License

© Zakupin A. S., Dudchenko I.P., Bogomolov L. M. et al., 2024

© Institute of Cosmophysical Research and Radio Wave Propagation, 2024 (original layout, design, compilation)


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Information about authors

Zakupin Alexander Sergeevich – Ph. D. (Phys. & Math.), Leading Researcher at the Seismology Laboratory, Institute of Marine Geology and Geophysics FEB RAS, Yuzhno-Sakhalinsk, Russia, ORCID 0000-0003-0593-6417.

Dudchenko Ilya Pavlovich – Ph. D. (Tech.), Head of the Department for Research of Geophysical Fields and Physical Properties of Geomaterials at the Center for Collective Use, Institute of Marine Geology and Geophysics FEB RAS, Yuzhno-Sakhalinsk, Russia, ORCID 0000-0002-4967-7405.

Bogomolov Leonid Mikhailovich – Dr. Sci. (Phys. & Math.), Chief Researcher, Director, Institute of Marine Geology and Geophysics FEB RAS, Yuzhno-Sakhalinsk, Russia, ORCID 0000-0002-9124-9797.

Gulyakov Sergey Aleksandrovich – Junior Researcher at the Department for Research of Geophysical Fields and Physical Properties of Geomaterials at the Center for Collective Use, Institute of Marine Geology and Geophysics FEB RAS, Yuzhno-Sakhalinsk, Russia, ORCID 0009-0001-7924-6972.

Kazakov Artem Ivanovich – Leading Engineer at the Department for Research of Geophysical Fields and Physical Properties of Geomaterials at the Center for Collective Use, Institute of Marine Geology and Geophysics FEB RAS, Yuzhno-Sakhalinsk, Russia, ORCID 0000-0002-1378-185X.

Stovbun Nikolay Sergeevich – Junior Researcher at the Department for Research of Geophysical Fields and Physical Properties of Geomaterials at the Center for Collective Use, Institute of Marine
Geology and Geophysics FEB RAS, Yuzhno-Sakhalinsk, Russia, ORCID 0009-0004-1927-798X.