Articles | Volume 37, issue 4
Regular paper
09 Jul 2019
Regular paper |  | 09 Jul 2019

Influence of the Earth's ring current strength on Størmer's allowed and forbidden regions of charged particle motion

Alexander S. Lavrukhin, Igor I. Alexeev, and Ilya V. Tyutin

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Cited articles

Alexeev, I. I.: Energy flux in the Earth's magnetosphere: Storm – substorm relationship, Space Sci. Rev., 107, 141–148,, 2003. a
Alexeev, I. I., Belenkaya, E. S., Kalegaev, V. V., Feldstein, Y. I., and Grafe, A.: Magnetic storms and magnetotail currents, J. Geophys. Res.-Space, 101, 7737–7747,, 1996. a, b, c
Baumjohann, W., Blanc, M., Fedorov, A., and Glassmeier, K.-H.: Current Systems in Planetary Magnetospheres and Ionospheres, Space Sci. Rev., 152, 99–134,, 2010. a
Daglis, I.: The storm-time ring current, Space Sci. Rev., 98, 343–363,, 2001. a
Daglis, I. A., Thorne, R. M., Baumjohann, W., and Orsini, S.: The terrestrial ring current: Origin, formation, and decay, Rev. Geophys., 37, 407–438,, 1999. a, b, c, d
Short summary
This paper concerns the question of whether the maximum Earth ring current strength exists and at which moment the ring current can start to break up, thus making a new mechanism of the ring current decrease during the magnetic storm. We study this effect using the Stormer theory of particle motion. After transition of critical strength, Stormer's inner trapping region opens up and the ring current charged particles get the opportunity to leave it, thus decreasing the current strength.