Abstract The magnetosphere exerts a strong influence on the ionosphere-thermosphere system via electric fields, particle precipitation, field-aligned currents, and heat flows. These magnetospheric processes act to produce a number of interesting ionospheric features, including electron and ion temperature hot spots, large-scale plasma blobs, extended tongues of ionization, ionization troughs and peaks, and ion composition changes. Superimposed on the large-scale ionospheric features are localized small-scale features, with perturbation amplitudes ranging from 10 per cent to a factor of 100. These ionospheric features then affect the thermospheric structure, circulation, and composition owing to ion-neutral momentum and energy coupling, and these changes, in turn, affect the ionosphere. Because of the strong ionosphere-thermosphere coupling, the presence of small-scale ionospheric features, and the different ionospheric and thermospheric response time-scales, localized thermospheric features are also produced, particularly at E-region altitudes where viscous dissipation is negligible.


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    Titel :

    Response of the ionosphere-thermosphere system to magnetospheric forcing


    Beteiligte:
    Schunk, R.W. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 10 , 6 ; 133-142


    Erscheinungsdatum :

    01.01.1989


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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