Physics
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982georl...9..672s&link_type=abstract
Geophysical Research Letters, vol. 9, June 1982, p. 672-675.
Physics
21
Earth Magnetosphere, Ionospheric Currents, Polar Caps, Polar Substorms, Computerized Simulation, Coupling, Electric Fields, Electric Potential, Ionospheric Conductivity, Magnetic Storms, Magnetosphere-Ionosphere Coupling, Ring Currents
Scientific paper
When an electrical potential is applied across the polar caps of earth, it creates a fringing electric field, which is distributed in some specific way throughout the ionosphere. At lower latitudes the fringing field is mapped into the magnetosphere along highly conducting magnetic field lines. Aspects of ionosphere-magnetosphere coupling are considered, taking into account an explicit formulation of the coupling problem provided by Vasyliunas (1970, 1972), and a computer simulation of the coupling along the lines of Vasyliunas' formulation. The computer simulation has been developed by Harel et al. (1979, 1981). Southwood (1977) demonstrated that the described coupling scheme can be used in the manner of a paradigm. A model based on the considered developments is discussed. Attention is given to the 'imperial potential model', the role of substorms, and the properties of the equilibrium state.
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