The coupled time-dependent continuity, momentum, and energy equations for four charged species (H(+), He(+), O(+) and electrons) moving through a stationary upper neutral atmosphere (composed of O2, N2, O, He, and H) were solved along open geomagnetic field lines using a modified version of the Gombosi et al. (1985) model. The thermospheric densities and temperatures, obtained from the MSIS-86 model (Hedin, 1987), were used to calculate neutral-ion sources, sinks, and collision frequencies. The various cross sections and conductivities employed by the Gombosi et al. model were also updated. The paper presents the first time-dependent solutions for the He(+) component of the polar wind. Special attention is paid to the solar cycle variation of the ion upflows.


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    Titel :

    Helium in the polar wind


    Beteiligte:
    Gombosi, T. I. (Autor:in) / Kerr, L. K. (Autor:in) / Nagy, A. F. (Autor:in) / Cannata, R. W. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1992-01-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Helium in the polar wind

    Gombosi, T.I. / Kerr, L.K. / Nagy, A.F. et al. | Elsevier | 1991


    Time-dependent polar wind modeling

    Gombosi, T. I. / Nagy, A. F. | NTRS | 1988


    Time-dependent polar wind modeling

    Gombosi, T.I. / Nagy, A.F. | Elsevier | 1989


    Time variations of cosmic-ray helium isotopes with BESS-Polar I

    Abe, K. / Fuke, H. / Haino, S. et al. | Elsevier | 2013


    Initial 3-D neutral polar wind

    Gardner, L. C. / Schunk, R. W. / International Council of Scientific Unions | British Library Conference Proceedings | 2006