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    The effects of the big storm events in the first half of 2015 on the radiation belts observed by EPT/PROBA-V

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    Authors
    Pierrard, V.
    Lopez Rosson, G.
    Discipline
    Physical sciences
    Subject
    electron
    geomagnetic storm
    Proba
    Audience
    Scientific
    Date
    2016
    Metadata
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    Description
    With the energetic particle telescope (EPT) performing with direct electron and proton discrimination on board the ESA satellite PROBA-V, we analyze the high-resolution measurements of the charged particle radiation environment at an altitude of 820 km for the year 2015. 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 < 2 completely filling the slot region. After 10 days, the formation of a new slot around L= 2.8 for electrons of 500-600 keV separates the outer belt from the belt extending at other longitudes than the South Atlantic Anomaly. Two other major events appeared in January and June 2015, again with injections of electrons in the inner belt, contrary to what was observed in 2013 and 2014. These observations open many perspectives to better understand the source and loss mechanisms, and particularly concerning the formation of three belts. © 2016 Author(s).
    Citation
    Pierrard, V.; Lopez Rosson, G. (2016). The effects of the big storm events in the first half of 2015 on the radiation belts observed by EPT/PROBA-V. , Annales Geophysicae, Vol. 34, Issue 1, 75-84, DOI: 10.5194/angeo-34-75-2016.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/2670
    doi: http://dx.doi.org/10.5194/angeo-34-75-2016
    scopus: 2-s2.0-84957311284
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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