Articles | Volume 37, issue 4
Ann. Geophys., 37, 535–547, 2019
https://doi.org/10.5194/angeo-37-535-2019
Ann. Geophys., 37, 535–547, 2019
https://doi.org/10.5194/angeo-37-535-2019

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 et al.

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Latest update: 28 Sep 2021
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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.