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ANGEO | Articles | Volume 36, issue 2
Ann. Geophys., 36, 595-607, 2018
https://doi.org/10.5194/angeo-36-595-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Dynamics and interaction of processes in the Earth and its...

Ann. Geophys., 36, 595-607, 2018
https://doi.org/10.5194/angeo-36-595-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Regular paper 05 Apr 2018

Regular paper | 05 Apr 2018

Quantifying the relationship between the plasmapause and the inner boundary of small-scale field-aligned currents, as deduced from Swarm observations

Balázs Heilig and Hermann Lühr
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Cited articles  
Anderson, P. C., Johnston, W. R., and Goldstein, J.: Observations of the ionospheric projection of the plasmapause, Geophys. Res. Lett., 35, L15110, https://doi.org/10.1029/2008GL033978, 2008. 
Carpenter, D. L. and Anderson, R. R.: An ISEE/whistler model of equatorial electron density in the magnetosphere, J. Geophys. Res., 97, 1097–1108, 1992. 
Chappell, C. R.: Detached plasma regions in the magnetosphere, J. Geophys. Res., 79, 1861–1870, https://doi.org/10.1029/JA079i013p01861, 1974. 
Chiu, Y. T., Luhmann, J. G., Ching, B. K., and Boucher Jr., D. J.: An equilibrium model of plasmaspheric composition and density, J. Geophys. Res., 84, 909–916, https://doi.org/10.1029/JA084iA03p00909, 1979. 
Darrouzet, F., De Keyser, J., Décréau, P. M. E., El Lemdani-Mazouz, F., and Vallières, X.: Statistical analysis of plasmaspheric plumes with Cluster/WHISPER observations, Ann. Geophys., 26, 2403–2417, https://doi.org/10.5194/angeo-26-2403-2008, 2008. 
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This paper presents a statistical study of the equatorward boundary of small-scale field-aligned currents (SSFACs) as observed by ESA's Swarm satellites and investigates the relation between this boundary and NASA’s Van Allen probe observed plasmapause (PP). It is found that the two boundaries are closely coincident in the midnight LT sector, where the new PP is formed. Our results point to the role of SSFACs in the creation of the PP and offer a unique tool to monitor PP dynamics.
This paper presents a statistical study of the equatorward boundary of small-scale field-aligned...
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