Počet záznamů: 1  

Shape of the dayside equatorial magnetopause

  1. 1.
    0474176 - ÚFA 2018 DE eng A - Abstrakt
    Šimůnek, Jiří - Šafránková, J. - Němeček, Z. - Přech, L.
    Shape of the dayside equatorial magnetopause.
    Geophysical Research Abstracts. Göttingen: European Geosciences Union, 2017. EGU2017-13062. ISSN 1607-7962.
    [EGU General Assembly 2017. 23.04.2017-28.04.2017, Vienna]
    Institucionální podpora: RVO:68378289
    Klíčová slova: THEMIS spacecraft * magnetopause * solar wind
    Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
    http://meetingorganizer.copernicus.org/EGU2017/EGU2017-13062.pdf

    A magnetopause location is generally believed to be determined by the solar wind
    dynamic pressure and by a sign and value of the interplanetary magnetic field (IMF)
    vertical (Bz) component. The contribution of other parameters is usually considered
    to be minor or negligible near the equatorial plane. A great majority of present
    magnetopause models describes the magnetopause shape with an ellipsoid or paraboloid
    of revolution. The axis of such surface usually reflects the Earth orbital motion
    around the Sun. Ten years of magnetopause observations near the equatorial plane by
    the THEMIS spacecraft allow to tests of this description and facilitates search for
    a better approximation of the magnetopause shape. We present a statistical study
    based on more than several thousand magnetopause crossings identified in the THEMIS
    data. The study accounts for a dependence of the magnetopause location on the
    upstream solar wind dynamic pressure and expects that all other effects can be
    averaged. The study suggests a very simple expression for the shape of the dayside
    magnetopause and examines the influence of IMF and solar wind parameters on this
    shape. The effects of magnetospheric current systems are also discussed.
    Trvalý link: http://hdl.handle.net/11104/0271285

     
     
Počet záznamů: 1  

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