Articles | Volume 38, issue 4
Ann. Geophys., 38, 901–918, 2020
https://doi.org/10.5194/angeo-38-901-2020
Ann. Geophys., 38, 901–918, 2020
https://doi.org/10.5194/angeo-38-901-2020

Regular paper 28 Jul 2020

Regular paper | 28 Jul 2020

Polar substorm on 7 December 2015: preonset phenomena and features of auroral breakup

Vladimir V. Safargaleev et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (further review by editor and referees) (13 Feb 2020) by Minna Palmroth
AR by Vladimir Safargaleev on behalf of the Authors (16 Mar 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (17 Mar 2020) by Minna Palmroth
RR by Anonymous Referee #3 (14 Apr 2020)
RR by Anonymous Referee #1 (21 Apr 2020)
ED: Publish subject to revisions (further review by editor and referees) (21 Apr 2020) by Minna Palmroth
AR by Vladimir Safargaleev on behalf of the Authors (04 May 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (07 May 2020) by Minna Palmroth
RR by Anonymous Referee #3 (04 Jun 2020)
ED: Publish as is (22 Jun 2020) by Minna Palmroth
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Short summary
Comprehensive analysis of a moderate substorm was performed using optical observations inside the auroral oval and in the polar cap, combined with data from satellites, radars, and ground magnetometers. The onset took place near the poleward boundary of the auroral oval that is not typical for classical substorms. The data fit to the near-tail current disruption scenario of the substorm onset. The role of the 15 min oscillations in the IMF Bz component in the substorm initiation is discussed.