Destruction of the westward-moving auroral bend

Details Destruction of the westward-moving auroral bend Destruction of the westward-moving auroral bend

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ge%26ae..29..434f&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 29, May-June 1989, p. 434-439. In Russian.

Physics

Atmospheric Models, Auroral Zones, Plasma Dynamics, Space Plasmas, Chaos, Earth Magnetosphere, Electric Fields, Field Aligned Currents, High Temperature Plasmas, Plasma Drift

Scientific paper

Visual observations of the destruction of the westward-moving auroral bend are summarized. The bend is modeled as the ionospheric projection of a magnetospheric plasma tube filled with hot plasma; the dynamics of the plasma tube is determined by the ExB drift of the plasma, and the electric field is generated in the case of the closure of magnetospheric field-aligned currents through the ionosphere. The system is unstable with respect to the excitation of drift-type flute pressure waves, and chaotization of wave phases and amplitudes produces turbulent motion in the bend region, filling the plasma tube.

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