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| Titel |
The effects of the storm events in 2015 on the radiation belts observed by EPT/PROBA-V |
| VerfasserIn |
Graciela Lopez Rosson, Viviane Pierrard |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250122150
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| Publikation (Nr.) |
 EGU/EGU2016-1105.pdf |
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| Zusammenfassung |
| With the Energetic Particle Telescope (EPT) on board the ESA satellite PROBA-V, we
analyze the high-resolution measurements of electrons at LEO (820 km).
On 17 March 2015, a big geomagnetic storm event injected unusual fluxes up
to low radial distances in the radiation belts. EPT electron measurements show a
deep dropout at L>4 starting during the main phase of the storm, associated to the
penetration of high energy fluxes at L value lower than 2 filling completely the
slot region. After 10 days, the formation of a new slot around L=2.8 separates the
outer belt from the inner belt extending at other longitudes than the South Atlantic
Anomaly.
This is believed to be a result of enhanced precipitation losses of energetic electrons due
to their interactions with VLF waves in the magnetosphere.
Two other similar events occurred in January and June 2015, again with injection of
electrons in the inner belt, contrary to what was observed in 2013 and 2014.
These events and the EPT measurements help us to better understand the formation of
three belts structures. |
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