Van Allen Probes Bibliography is from August 2012 through September 2021 Notice:
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Energetic electron injections deep into the inner magnetosphere associated with substorm activity
Author | Turner, D.; Claudepierre, S.; Fennell, J.; O\textquoterightBrien, T.; Blake, J.; Lemon, C.; Gkioulidou, M.; Takahashi, K.; Reeves, G.; Thaller, S.; Breneman, A.; Wygant, J.; Li, W.; Runov, A.; Angelopoulos, V.; |
Keywords | energetic particle injections; inner magnetosphere; Radiation belts; substorms; THEMIS; Van Allen Probes |
Abstract | From a survey of the first nightside season of NASA\textquoterights Van Allen Probes mission (Dec/2012 \textendash Sep/2013), 47 energetic (10s to 100s of keV) electron injection events were found at L-shells <= 4, all of which are deeper than any previously reported substorm-related injections. Preliminary details from these events are presented, including how: all occurred shortly after dipolarization signatures and injections were observed at higher L-shells; the deepest observed injection was at L~2.5; and, surprisingly, L<=4 injections are limited in energy to <=250 keV. We present a detailed case study of one example event revealing that the injection of electrons down to L~3.5 was different from injections observed at higher L and likely resulted from drift resonance with a fast magnetosonic wave in the Pi 2 frequency range inside the plasmasphere. These observations demonstrate that injections occur at very low L-shells and may play an important role for inner zone electrons. |
Year of Publication | 2015 |
Journal | Geophysical Research Letters |
Volume | |
Number of Pages | |
Section | |
Date Published | 02/2015 |
ISBN | |
URL | http://doi.wiley.com/10.1002/2015GL063225 |
DOI | 10.1002/2015GL063225 |