Equilibrium motion of quiet auroral arcs

Details Equilibrium motion of quiet auroral arcs Equilibrium motion of quiet auroral arcs

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ge%26ae..21..668l&link_type=abstract

Geomagnetizm i Aeronomiia, vol. 21, July-Aug. 1981, p. 668-673. In Russian.

Physics

1

Auroral Arcs, Convective Flow, Ionospheric Propagation, Plasma Dynamics, Electric Fields, Flow Velocity, Plasma Density, Polarization Characteristics, Steady State

Scientific paper

A theoretical study shows that a region of elevated plasma density near an auroral arc is not only the consequence of the arc but is also a factor that sustains the existence of the arc. Under steady state conditions, the arc and the associated plasma region move at a velocity that differs from the plasma convection velocity. Depending on the orientation of the arc relative to the external electric field, the velocity of the arc is greater or less than the convection velocity. The plasma region is located either ahead or behind the arc.

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