Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsa44a..07r&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SA44A-07
Physics
2409 Current Systems (2721), 2411 Electric Fields (2712), 2431 Ionosphere/Magnetosphere Interactions (2736), 2712 Electric Fields (2411), 2736 Magnetosphere/Ionosphere Interactions (2431)
Scientific paper
Electrodynamic interaction of hot plasma in the inner magnetosphere with the conducting ionosphere produces the phenomenon of steady-state shielding, which reduces the transmission of electric fields across the latitudes of region-2 field-aligned currents. This affects the penetration of magnetospheric electric fields to the low-latitude ionosphere, and influences the distribution of ionospheric electric fields generated by the ionospheric wind dynamo. These effects can be simulated by representing the magnetosphere as a combination of equivalent magnetospheric Hall and east-west Pedersen conductances. In this study we examine how the equivalent magnetospheric conductances might be expected to vary with different magnetospheric and ionospheric parameters, and we investigate the response of modeled ionospheric electric fields and region-2 currents to the equivalent magnetospheric conductances.
Maute Astrid
Richmond Arthur D.
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