Variations of ionospheric and geomagnetic field parameters during the June 18, 2013 Bachat earthquake

Anastasiya Belinskaya; Aleksandr Kovalev; Nikolay Semakov; Sofiya Belinskaya

doi:10.12737/stp-71202110

UDC 55

VARIATIONS OF IONOSPHERIC AND GEOMAGNETIC FIELD PARAMETERS DURING THE JUNE 18, 2013 BACHAT EARTHQUAKE Variations of ionospheric and geomagnetic field parameters during the June 18, 2013 Bachat earthquake

АА Аа

Published in Solar-Terrestrial Physics · Volume 7, Issue 1 · Pages 78–84 · Rubric: Results of current research

DOI: https://doi.org/10.12737/stp-71202110

Received: 24.09.2020 Accepted: 11.01.2021 Language of publication: ENG

Authors

Anastasiya Belinskaya

ORCID

Aleksandr Kovalev

Nikolay Semakov

Sofiya Belinskaya

Anastasiya Belinskaya

Academic degree: candidate of physical and mathematical sciences

Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Russian Federation · Novosibirsk

ORCID

Aleksandr Kovalev

Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Russian Federation · Novosibirsk

Nikolay Semakov

Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Russian Federation · Novosibirsk

Sofiya Belinskaya

Irkutsk State University of Railway Transport Irkutsk

ABSTRACT

The paper presents the results of a study of variations in ionospheric parameters and local magnetic constant before, during, and after the Vachat earthquake, which occurred on June 18, 2013 at 23:02 UT (June 19, 2013 at 06:02 LT) with a magnitude 5.3–5.6 and epicenter coordinates 54.29 ° N, 86.17 ° E. We have used data from IPGG SB RAS and TSU ionospheric stations and INTERMAGNET geomagnetic observatories. We have established that in the period preceding the earthquake there was a rather sharp increase in the magnetic moment, and in the subsequent period there was an equally sharp decrease in the magnetic moment. It is noted that the analysis of the daily average values of the local magnetic constant is the most promising for searching for geomagnetic precursors of earthquakes. We have found a low strong sporadic layer Es for two days before the event, the like of which was not observed for 15 days before and 15 days after the event. In addition, on the days preceding the shock, the background values of the F2-layer critical frequency were larger by more than 20% at the local pre-event hours. On the second day after the earthquake, there appeared a night-time region of low values (about 14%), which persisted until the morning of the third day.

KEYWORDS

earthquake, ionosphere, sporadic ionospheric layer, local magnetic constant

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Editor-in-Chief

Geliy Zherebtsov

solater@iszf.irk.ru

Deputy Editor-in-Chief

Aleksandr Stepanov

stepanov@gaoran.ru

Deputy Editor-in-Chief

Alexander Potapov

potapov@iszf.irk.ru

Executive Secretary of Editorial Board

Natalia Polyushkina

npol@iszf.irk.ru

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GOST

Belinskaya A. Y., Kovalev A. A., Semakov N. N., Belinskaya S. I. Variations of ionospheric and geomagnetic field parameters during the June 18, 2013 Bachat earthquake // Solar-Terrestrial Physics. 2020. no. 1. pp. 78-84. DOI: https://doi.org/10.12737/stp-71202110. (Date of access 13.10.2026).

MLA

Anastasiya Belinskaya, Kovalev A. A., Semakov N. N., Belinskaya S. I.. "Variations of ionospheric and geomagnetic field parameters during the June 18, 2013 Bachat earthquake." Solar-Terrestrial Physics 7.1 (2020): 78-84. DOI: https://doi.org/10.12737/stp-71202110.

APA

Belinskaya A. Y., Kovalev A. A., Semakov N. N., Belinskaya S. I. (2020). Variations of ionospheric and geomagnetic field parameters during the June 18, 2013 Bachat earthquake. Solar-Terrestrial Physics, 7(1), 78-84. https://doi.org/10.12737/stp-71202110

Chicago

Anastasiya Belinskaya, Kovalev A. A., Semakov N. N., Belinskaya S. I.. "Variations of ionospheric and geomagnetic field parameters during the June 18, 2013 Bachat earthquake." Solar-Terrestrial Physics 7, no. 1 (2020): 78-84. https://doi.org/10.12737/stp-71202110.

WIKI

{{cite journal | author = Belinskaya A. Y., Kovalev A. A., Semakov N. N., Belinskaya S. I. | title = Variations of ionospheric and geomagnetic field parameters during the June 18, 2013 Bachat earthquake | journal = Solar-Terrestrial Physics | year = 2020 | volume = 7 | issue = 1 | pages = 78-84 | doi = 10.12737/stp-71202110 }}

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VARIATIONS OF IONOSPHERIC AND GEOMAGNETIC FIELD PARAMETERS DURING THE JUNE 18, 2013 BACHAT EARTHQUAKE Variations of ionospheric and geomagnetic field parameters during the June 18, 2013 Bachat earthquake

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