Abstract The results of numerical modeling of thinning process in the Earth’s magnetotail current sheet are compared with the model of an anisotropic current sheet in collisionless space plasma. Stability of the current sheet during its evolution is investigated. In the evolution one can distinguish three basic stages: 1) transformation of the initial two-dimensional “isotropic” equilibrium that is well described within the MHD-approximation into a relatively thin current structure; 2) further kinetic evolution, as a result of which the virtually one-dimensional, extremely thin current sheet is formed; 3) relaxation of the system into a new equilibrium that can be stable or unstable. A substorm scenario of transformation of the magnetospheric tail and its transition into the unstable state is suggested. The spontaneously appearing tearing disturbance favors a current sheet disruption. It is shown that the estimate of a tearing mode wavelength, obtained from the model, is in accordance with experimental observations during the explosive phase of substorms.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Tearing mode in thin current sheets of the Earth’s magnetosphere: A scenario of transition to unstable state


    Beteiligte:
    Zelenyi, L. M. (Autor:in) / Kropotkin, A. P. (Autor:in) / Domrin, V. I. (Autor:in) / Artemyev, A. V. (Autor:in) / Malova, H. V. (Autor:in) / Popov, V. Y. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2009




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :

    Klassifikation :

    BKL:    55.60 Raumfahrttechnik / 39.00 Astronomie: Allgemeines / 50.93 Weltraumforschung
    Lokalklassifikation TIB:    770/3520/8000



    Tearing mode in thin current sheets of the Earth’s magnetosphere: A scenario of transition to unstable state

    Zelenyi, L. M. / Kropotkin, A. P. / Domrin, V. I. et al. | Springer Verlag | 2009


    Tearing of Thin Sheets with Wrinkling

    Woo, Kyeongsik / Zignego, Donney / Jenkins, Christopher | AIAA | 2011


    Tearing of Thin Sheets with Wrinkling

    Woo, K. / Zignego, D. / Jenkins, C. et al. | British Library Conference Proceedings | 2011


    Tearing of Thin Polymer Sheets with Wrinkling

    Woo, Kyeongsik / Zignego, Donald L. / Jenkins, Christopher H. | AIAA | 2015


    Three-Dimensional Current Sheet Tearing in the Earth's Magnetotail

    Buechner, J. / Committee on Space Research / Scientific Commission D | British Library Conference Proceedings | 1995