The Dynamics Explorer satellites have returned a large body of data containing high resolution magnetometer measurements and distributions of charged particles of all but thermal electrons. From these data the relations of the field aligned currents to particle precipitation structures were investigated and the charge carriers were identified. Results include the following: (1) during very quiet periods, field aligned currents exist primarily as fine structure; (2) during onset of substorms, region 1 and region 2 become clearly evident but contain significant structure; (3) as magnetic activity subsides, current regions become less distinct, and structure becomes more dominant; (4) the distribution of the upward currents derived from magnetometer data and calculated from suprathermal electron data agree remarkably well in shape but not necessarily in magnitude; (5) at all local times, 5 eV electrons seldom carry most of the upward current; (6) except for the accelerated inverted-V electrons, the dominant upward current carriers which are masured are below 500 eV and are distributed in energy; (7) dusk upward currents (region 1) are associated with the boundary plasma sheet; and (8) suprathermal electron bursts are important current carrying structures.


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    Titel :

    Current carriers for the field-aligned current system


    Beteiligte:
    Hoffman, R. A. (Autor:in) / Sugiura, M. (Autor:in) / Maynard, N. C. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.01.1985



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Current carriers for the field-aligned current system

    Hoffman, R.A. / Sugiura, M. / Maynard, N.C. | Elsevier | 1985


    Field aligned current observed by Cluster

    Shi, J. K. / Zhang, T. L. / Cheng, Z. W. et al. | British Library Conference Proceedings | 2006




    Field-Aligned Currents from Asymmetric Ring Current During Substorms

    Tsedilina, E. E. / Beliansky, N. V. / Committee on Space Research| International Association of Geomagnetism and Aeronomy | British Library Conference Proceedings | 1995