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    Dynamical simulations of plasmapause deformations

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    Pierrard(2006b).pdf (284.3Kb)
    Authors
    Pierrard, V.
    Cabrera, J.
    Discipline
    Physical sciences
    Subject
    Computer simulation
    Earth atmosphere
    Electric fields
    Image analysis
    Plasma stability
    Earth (planet)
    Storms
    Geomagnetic substorms
    IMAGE observation
    Plasmasphere
    Geomagnetism
    Plasma waves
    Audience
    Scientific
    Date
    2006
    Metadata
    Show full item record
    Description
    Dynamical simulations have been developed at IASB-BIRA to model the deformations of the plasmasphere during geomagnetic substorms and other variations in the level of geomagnetic activity. The simulations are based on the mechanism of plasma instability and use the empirical Kp-dependent electric field E5D. The results of the simulations are compared with IMAGE observations that provide the first global comprehensive images of the Earth's plasmasphere. The predicted plasmapause positions correspond generally rather satisfactorily with the EUV observations. The plasmasphere is rather extended in all MLT sectors during quiet periods. During or just after geomagnetic substorms, the plasmaspause is sharper and becomes closer to the Earth in the night sector. Periods of enhanced geomagnetic activity are associated to the formation of plumes that rotate with the plasmasphere. The simulations reproduce the formation and the motion of these plumes, as well as the development of other structures like shoulders observed at the plasmapause by EUV on IMAGE.
    Citation
    Pierrard, V.; Cabrera, J. (2006). Dynamical simulations of plasmapause deformations. , Space Science Reviews, Vol. 122, Issue 1-4, 119-126, DOI: 10.1007/s11214-006-5670-3.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/4513
    doi: http://dx.doi.org/10.1007/s11214-006-5670-3
    scopus: 2-s2.0-33749029912
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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