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| Titel |
July 2004: an extreme event from the radiation belts point of view |
| VerfasserIn |
Remi Benacquista, Sandrine Rochel, Guy Rolland |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250141785
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| Publikation (Nr.) |
 EGU/EGU2017-5328.pdf |
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| Zusammenfassung |
| During July 2004, at least three ICMEs impact successively the magnetosphere. Within a few
days, the flux of relativistic electrons increases leading to a filling of the the radiation
belts.
We investigate particles data from the NOAA-15 spacecraft over the 1998-2015 time range,
and focus on the events able to fulfill the radiation belts with relativistic electrons. It is
notably found that individual events usually fulfill the radiation belts in a limited
range of L∗. From this standpoint, July 2004 is an exception since it leads to a
complete fulfill of the radiation belts. In addition, the related magnetic storm is not
exceptionally strong (Dst ≈−170nT ), so it is usually not considered as a potential
extreme event. After presenting some statistical results, we spotlight the exceptional
case of July 2004 and we focus on this particular event. Notably, we propose an
explanation to understand how this filling can be observed on such a large range of L∗. |
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