High-latitude field-aligned current sources and induced electric fields

Details High-latitude field-aligned current sources and induced electric fields High-latitude field-aligned current sources and induced electric fields

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.5175b&link_type=abstract

Journal of Geophysical Research, vol. 84, Sept. 1, 1979, p. 5175-5180.

Physics

1

Atmospheric Models, Current Sheets, Electric Fields, Field Aligned Currents, Ionospheric Conductivity, Polar Regions, Current Distribution, Dynamo Theory, Electric Potential, Magnetic Fields, Magnetosphere-Ionosphere Coupling, Solar Wind

Scientific paper

Using a simple, planar model of the high latitude ionosphere with an enhanced conductivity auroral ring, the electric potential is computed for a pair of field-aligned current sheets inferred from observations. The relationship of various characteristics of the electric potential pattern to features of the field-aligned current distribution are elucidated in the context of a generalized field-aligned current Fourier analysis. On the basis of the analysis and observations to date, it is concluded that boundary layer dynamo action is the prevalent mechanism in the solar wind/magnetosphere/ionosphere interaction.

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