Combined effects of concurrent Pc5 and chorus waves on relativistic electron dynamics

TitleCombined effects of concurrent Pc5 and chorus waves on relativistic electron dynamics
Publication TypeJournal Article
Year of Publication2015
AuthorsKatsavrias, C, Daglis, IA, Li, W, Dimitrakoudis, S, Georgiou, M, Turner, DL, Papadimitriou, C
JournalAnnales Geophysicae
Volume33
Issue9
Pagination1173 - 1181
Date Published09/2015
KeywordsMagnetospheric physics
AbstractWe present electron phase space density (PSD) calculations as well as concurrent Pc5 and chorus wave activity observations during two intense geomagnetic storms caused by interplanetary coronal mass ejections (ICMEs) resulting in contradicting net effect. We show that, during the 17 March 2013 storm, the coincident observation of chorus and relativistic electron enhancements suggests that the prolonged chorus wave activity seems to be responsible for the enhancement of the electron population in the outer radiation belt even in the presence of pronounced outward diffusion. On the other hand, the significant depletion of electrons, during the 12 September 2014 storm, coincides with long-lasting outward diffusion driven by the continuous enhanced Pc5 activity since chorus wave activity was limited both in space and time.
URLhttp://www.ann-geophys.net/33/1173/2015/
DOI10.5194/angeo-33-1173-2015
Short TitleAnn. Geophys.


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