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ANGEO | Articles | Volume 36, issue 4
Ann. Geophys., 36, 1027–1035, 2018
https://doi.org/10.5194/angeo-36-1027-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Ann. Geophys., 36, 1027–1035, 2018
https://doi.org/10.5194/angeo-36-1027-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Regular paper 27 Jul 2018

Regular paper | 27 Jul 2018

A possible source mechanism for magnetotail current sheet flapping

Liisa Juusola et al.

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Cited articles

Daldorff, L. K. S., Tóth, G., Gombosi, T. I., Lapenta, G., Amaya, J., Markidis, S., and Brackbill, J. U.: Two-way coupling of a global Hall magnetohydrodynamics model with a local implicit particle-in-cell model, J. Comput. Phys., 268, 236–254, https://doi.org/10.1016/j.jcp.2014.03.009, 2014. a
Davey, E. A., Lester, M., Milan, S. E., and Fear, R. C.: Storm and substorm effects on magnetotail current sheet motion, J. Geophys. Res., 117, A02202, https://doi.org/10.1029/2011JA017112, 2012. a
Erkaev, N. V., Semenov, V. S., Kubyshkin, I. V., Kubyshkina, M. V., and Biernat, H. K.: MHD model of the flapping motions in the magnetotail current sheet, J. Geophys. Res., 114, A03206, https://doi.org/10.1029/2008JA013728, 2009. a
Forsyth, C., Lester, M., Fear, R. C., Lucek, E., Dandouras, I., Fazakerley, A. N., Singer, H., and Yeoman, T. K.: Solar wind and substorm excitation of the wavy current sheet, Ann. Geophys., 27, 2457–2474, https://doi.org/10.5194/angeo-27-2457-2009, 2009. a
Gabrielse, C., Angelopoulos, V., Runov, A., Kepko, L., Glassmeier, K. H., Auster, H. U., McFadden, J., Carlson, C. W., and Larson, D.: Propagation characteristics of plasma sheet oscillations during a small storm, Geophys. Res. Lett., 35, L17S13, https://doi.org/10.1029/2008GL033664, 2008. a
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Short summary
The Earth's magnetic field is shaped by the solar wind. On the dayside the field is compressed and on the nightside it is stretched as a long tail. The tail has been observed to occasionally undergo flapping motions, but the origin of these motions is not understood. We study the flapping using a numerical simulation of the near-Earth space. We present a possible explanation for how the flapping could be initiated by a passing disturbance and then maintained as a standing wave.
The Earth's magnetic field is shaped by the solar wind. On the dayside the field is compressed...
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