Ionosphere-magnetosphere coupling

Details Ionosphere-magnetosphere coupling Ionosphere-magnetosphere coupling

Jun 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ssrv...17..537w&link_type=abstract

(IAU, IUGG, URSI, IUPAP, COSPAR, and SCOSTEP, International Solar-Terrestrial Physics Symposium, Sao Paulo, Brazil, June 17-24,

Physics

14

Atmospheric Models, Convective Flow, Earth Magnetosphere, Electric Fields, Ionospheric Currents, Magnetosphere-Ionosphere Coupling, Atmospheric Electricity, Birkeland Currents, Ionospheric Conductivity, Magnetic Field Configurations, Magnetopause, Polar Substorms

Scientific paper

Large-scale electrical coupling between the ionosphere and the magnetosphere is examined, with particular reference to behavior on time scales of hours or more. Magnetic merging and a viscous interaction are considered as possible generating mechanisms, but merging seems the most likely alternative. Simple self-consistent theoretical models of the magnetospheric-convection system imply that magnetospheric particles should shield the inner magnetosphere and the low-latitude ionosphere from most of the time-average convection electric field. It is clear from the descriptions of experimental data that the high-latitude ionosphere is in nearly constant electrical contact with the magnetosphere through Birkeland currents, with boundary currents in the dayside cusp region mapping into the near tail.

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