Theory of imperfect magnetosphere-ionosphere coupling

Details Theory of imperfect magnetosphere-ionosphere coupling Theory of imperfect magnetosphere-ionosphere coupling

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..633k&link_type=abstract

Geophysical Research Letters, vol. 7, Sept. 1980, p. 633-636.

Physics

8

Atmospheric Physics, Coupling, Earth Magnetosphere, Electric Potential, Ionospheric Currents, Magnetohydrodynamics, Magnetosphere-Ionosphere Coupling, Auroral Zones, Convection, Equipotentials, Hydrodynamic Equations, Ion Production Rates, Ionospheric Conductivity

Scientific paper

A theory of magnetosphere-ionosphere coupling in the presence of field-aligned potential drops is formulated within the framework of magnetohydrodynamic equations. Our formulation allows the magnetosphere as well as the ionosphere to respond self-consistently to the parallel potential drop along auroral field lines. Equipotential contours are distorted into a V-shaped structure near the convection reversal boundary and S-shaped on the equatorward side, each gives rise to an inverted V precipitation band. The loading effect of the imperfect coupling results in a valley in the electric field profile which occurs equatorward of the convection reversal boundary.

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