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Combined effects of concurrent Pc5 and chorus waves on relativistic electron dynamics
- Source :
- Annales Geophysicae, Vol 33, Pp 1173-1181 (2015)
- Publication Year :
- 2015
- Publisher :
- Copernicus Publications, 2015.
-
Abstract
- We 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.
- Subjects :
- Science
Physics
QC1-999
Geophysics. Cosmic physics
QC801-809
Subjects
Details
- Language :
- English
- ISSN :
- 09927689 and 14320576
- Volume :
- 33
- Database :
- Directory of Open Access Journals
- Journal :
- Annales Geophysicae
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.bb3fe883c6664c32906bceaeb860d00a
- Document Type :
- article
- Full Text :
- https://doi.org/10.5194/angeo-33-1173-2015