The effect of microscopic turbulence on magnetosphere-ionosphere coupling

Details The effect of microscopic turbulence on magnetosphere-ionosphere coupling The effect of microscopic turbulence on magnetosphere-ionosphere coupling

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981georl...8..269l&link_type=abstract

Geophysical Research Letters, vol. 8, Mar. 1981, p. 269-272.

Physics

116

Coupling, Earth Ionosphere, Earth Magnetosphere, Magnetohydrodynamic Turbulence, Magnetohydrodynamic Waves, Magnetosphere-Ionosphere Coupling, Plasma-Particle Interactions, Auroral Arcs, Damping, Density Distribution, Electric Current, Maxwell Equation, Temperature Gradients, Velocity Distribution, Wave Equations

Scientific paper

The effect of turbulence on the coupling of the magnetosphere and ionosphere has been investigated by including an effective collision frequency in the electron equation of motion. When this term is combined with the continuity equation, the ion equation of motion and Maxwell's equations, a dispersion relation for the kinetic Alfven wave including effective collisions is found. The wave-particle interaction leads to a strong damping of the wave. Inclusion of the effects of plasma sheet kinetics yields a scale size transverse to the magnetic field which corresponds to the size of visual auroral arcs.

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