Articles | Volume 38, issue 4
Ann. Geophys., 38, 901–918, 2020
Ann. Geophys., 38, 901–918, 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.

Related authors

Improved method of estimating temperatures at meteor peak heights
Emranul Sarkar, Alexander Kozlovsky, Thomas Ulich, Ilkka Virtanen, Mark Lester, and Bernd Kaifler
Atmos. Meas. Tech. Discuss.,,, 2020
Preprint under review for AMT
Short summary
Resolving ambiguous direction of arrival of weak meteor radar trail echoes
Daniel Kastinen, Johan Kero, Alexander Kozlovsky, and Mark Lester
Atmos. Meas. Tech. Discuss.,,, 2020
Revised manuscript under review for AMT
Short summary
Even moderate geomagnetic pulsations can cause fluctuations of foF2 frequency of the auroral ionosphere
Nadezda Yagova, Alexander Kozlovsky, Evgeny Fedorov, and Olga Kozyreva
Ann. Geophys. Discuss.,,, 2020
Revised manuscript under review for ANGEO
Short summary
Geomagnetic pulsations in the Pc5/Pi3 frequency range and fluctuations of foF2 frequency
Nadezda Yagova, Alexander Kozlovsky, Evgeny Fedorov, and Olga Kozyreva
Ann. Geophys. Discuss.,,, 2019
Manuscript not accepted for further review
Short summary
Retrieval of intrinsic mesospheric gravity wave parameters using lidar and airglow temperature and meteor radar wind data
Robert Reichert, Bernd Kaifler, Natalie Kaifler, Markus Rapp, Pierre-Dominique Pautet, Michael J. Taylor, Alexander Kozlovsky, Mark Lester, and Rigel Kivi
Atmos. Meas. Tech., 12, 5997–6015,,, 2019
Short summary

Related subject area

Subject: Magnetosphere & space plasma physics | Keywords: Storms and substorms
Response of the low- to mid-latitude ionosphere to the geomagnetic storm of September 2017
Nadia Imtiaz, Waqar Younas, and Majid Khan
Ann. Geophys., 38, 359–372,,, 2020
Short summary
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
Ann. Geophys., 37, 535–547,,, 2019
Short summary
Dynamics of a geomagnetic storm on 7–10 September 2015 as observed by TWINS and simulated by CIMI
Joseph D. Perez, James Edmond, Shannon Hill, Hanyun Xu, Natalia Buzulukova, Mei-Ching Fok, Jerry Goldstein, David J. McComas, and Phil Valek
Ann. Geophys., 36, 1439–1456,,, 2018
Short summary

Cited articles

Agapitov, O., Glassmeier, K.-H., Plaschke, F., Auster, H.-U., Constantinescu, D., Angelopoulos, V., Magnes, W., Nakamura, R., Carlson, Ch. W., Frey, S., and McFadden J. P.: Surface waves and field line resonances: A THEMIS case study, J. Geophys. Res., 114, A00C27,, 2009. 
Aikio, A. T., Lakkala, T., Kozlovsky, A., and Williams, P. J. S.: Current systems of stable drifting auroral arcs in the evening sector, J. Geophys. Res., 107, 1424,, 2002. 
Akasofu, S.-I.: Physics of Magnetospheric Substorms, Astrophysics and Space Science Library, Vol. 47, edited by: Reidel, D., Hingham, Mass., 619 pp., 1977. 
Akasofu, S.-I. and Kimball, D. S.: The dynamics of the aurora – I: Instability of aurora, J. Atmos. Terr. Phys., 26, 205–206,, 1964. 
Amm, O. and Viljanen, A.: Ionospheric disturbance magnetic field continuation from the ground to the ionosphere using spherical elementary current systems, Earth Planet. Space, 51, 431–440,, 1999. 
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.