North-south asymmetry of ultra-low-frequency oscillations of Earth’s electromagnetic field

Anatol Guglielmi; Boris Klain; Alexander Potapov

doi:10.12737/stp-34201703

UDC 55

NORTH-SOUTH ASYMMETRY OF ULTRA-LOW-FREQUENCY OSCILLATIONS OF EARTH’S ELECTROMAGNETIC FIELD North-south asymmetry of ultra-low-frequency oscillations of Earth’s electromagnetic field

АА Аа

Published in Solar-Terrestrial Physics · Volume 3, Issue 4 · Pages 26–31 · Rubric: Results of current research

DOI: https://doi.org/10.12737/stp-34201703

Received: 29.12.2017 Accepted: 15.03.2026 Language of publication: en-US

Authors

Anatol Guglielmi

ORCID

Boris Klain

Alexander Potapov

ORCID SPIN

Anatol Guglielmi

Academic degree: doctor of physical and mathematical sciences

Schmidt Institute of Physics of the Earth RAS Russian Federation · Moscow

ORCID

Boris Klain

Academic degree: doctor of physical and mathematical sciences

Borok Geophysical Observatory of IPE RAS Russian Federation · Borok

Alexander Potapov

Academic degree: doctor of physical and mathematical sciences

Institute of Solar-Terrestrial Physics SB RAS Russian Federation · Irkutsk

ORCID SPIN

ABSTRACT

In the paper, we present the result of an experimental study of north-south asymmetry of ultralow-frequency electromagnetic oscillations IPCL. This study is based on observations made at Mirny Observatory (Antarctica). IPCLs are excited in the dayside sector of the auroral oval in the range 3–10 min periods and represent one of the most powerful types of oscillations of Earth's magnetosphere. These oscillations were discovered in the 1970s during IPhE AS USSR polar expeditions organized by Prof. V.A. Troitskaya. We have shown that IPCL activity in Mirny depends on the inclination (north-south asymmetry) of interplanetary magnetic field (IMF) lines to the plane of the geomagnetic equator before the front of the magnetosphere. The result suggests a controlling exposure of IMF on the magnetospheric oscillations and gives rise to the hypothesis that IPCL are forced oscillations of a nonlinear dynamical system whose major structural elements are dayside polar cusps. The paper is dedicated to the memory of Professor V.A. Troitskaya (1917–2010).

KEYWORDS

magnetosphere, solar wind, geomagnetic pulsations, interplanetary magnetic field, Antarctica

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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

Guglielmi A. V., Klain B. I., Potapov A. S. North-south asymmetry of ultra-low-frequency oscillations of Earth’s electromagnetic field // Solar-Terrestrial Physics. 2017. no. 4. pp. 26-31. DOI: https://doi.org/10.12737/stp-34201703. (Date of access 12.11.2026).

MLA

Anatol Guglielmi, Klain B. I., Potapov A. S.. "North-south asymmetry of ultra-low-frequency oscillations of Earth’s electromagnetic field." Solar-Terrestrial Physics 3.4 (2017): 26-31. DOI: https://doi.org/10.12737/stp-34201703.

APA

Guglielmi A. V., Klain B. I., Potapov A. S. (2017). North-south asymmetry of ultra-low-frequency oscillations of Earth’s electromagnetic field. Solar-Terrestrial Physics, 3(4), 26-31. https://doi.org/10.12737/stp-34201703

Chicago

Anatol Guglielmi, Klain B. I., Potapov A. S.. "North-south asymmetry of ultra-low-frequency oscillations of Earth’s electromagnetic field." Solar-Terrestrial Physics 3, no. 4 (2017): 26-31. https://doi.org/10.12737/stp-34201703.

WIKI

{{cite journal | author = Guglielmi A. V., Klain B. I., Potapov A. S. | title = North-south asymmetry of ultra-low-frequency oscillations of Earth’s electromagnetic field | journal = Solar-Terrestrial Physics | year = 2017 | volume = 3 | issue = 4 | pages = 26-31 | doi = 10.12737/stp-34201703 }}

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NORTH-SOUTH ASYMMETRY OF ULTRA-LOW-FREQUENCY OSCILLATIONS OF EARTH’S ELECTROMAGNETIC FIELD North-south asymmetry of ultra-low-frequency oscillations of Earth’s electromagnetic field

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