Certain aspects of the dynamics of the asymmetric ring current

Details Certain aspects of the dynamics of the asymmetric ring current Certain aspects of the dynamics of the asymmetric ring current

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ge%26ae..30..740b&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 30, Sept.-Oct. 1990, p. 740-746. In Russian.

Physics

1

Energetic Particles, Ion Cyclotron Radiation, Magnetospheric Instability, Plasmasphere, Ring Currents, Atmospheric Models, Magnetohydrodynamic Waves, Spatial Distribution, Sudden Ionospheric Disturbances

Scientific paper

The contribution of ion-cyclotron instability to the formation of the asymmetric ring current is examined. The resonant interaction of westward-drifting high-energy protons with Alfven waves is analyzed in the framework of a self-consistent model taking into account the inhomogeneity of the plasmasphere. It is shown that pitch-angle scattering by the waves leads to proton precipitation into the ionosphere and the formation of an asymmetric current loop ion in the region of the evening plasmaspheric bulge.

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