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| Titel |
Radiation belt response to the March 7, 2012 eruptive solar event |
| VerfasserIn |
Christos Katsavrias, Ioannis Daglis, Marina Georgiou, Drew Turner, Ingmar Sandberg, George Balasis, Constantinos Papadimitriou |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250086261
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| Publikation (Nr.) |
 EGU/EGU2014-91.pdf |
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| Zusammenfassung |
| We study the response of the outer radiation belt due to an extreme eruptive solar event that
took place on March 7, 2012, followed by two ultra-fast (>2000 km/s) CMEs and triggered
an intense geomagnetic storm (minimum Dst =-147 nT) approximately two days later. To do
that, we present direct observations of equatorial electron phase space density (PSD) by using
differential flux data from the Solid State Telescope (SST) of THEMIS (A, D and E),
the Radiation Environment Monitor (REM) of INTEGRAL, the Adaptive Particle
Imaging Detectors (RAPID) of the 4 CLUSTER spacecrafts and the EPIC Radiation
Monitor of XMM for the time period of March 5 – 12, 2012. Observations in the
duskside magnetosphere show clear signatures of PSD enhancements while in the
dawnside show PSD depletion. In addition, pronounced wave power enhancments
at Pc4-5 frequencies are observed by CARISMA, THEMIS and IMAGE ground
magnetometer arrays collocated with electron drift orbits, right after the Storm
Sudden Commencment (SSC) in March 8. The study is complemented by in-situ and
ground-based data of the solar wind parameters and the geomagnetic indices. This work has
received support from the Hellenic National Space Weather Research Network and
from the European Union’s Seventh Framework Programme (FP7-SPACE-2011-1)
under grant agreement no. 284520 for the MAARBLE (Monitoring, Analysing and
Assessing Radiation Belt Energization and Loss) collaborative research project. |
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