Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm51b0824p&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #SM51B-0824
Physics
2704 Auroral Phenomena (2407), 2736 Magnetosphere/Ionosphere Interactions
Scientific paper
Enhancements in the outflow of ionospheric ions to the Earth's plasma sheet, and the consequent mass-loading of the magnetotail, represent responses to energy-release processes in the tail, with a lag time measured in hours. Such feedback occurs on timescales considerably longer than those of the release processes themselves, and probably influences their occurrence. To include such effects (effectively as "boundary conditions") in global MHD models of the magnetosphere, one must be able to relate the outflows to the some calculable (within the simulation) property of the magnetosphere, e.g. auroral field-aligned current systems. We will use auroral electron precipitation, measured by the FAST spacecraft, as a proxy for field-aligned currents. We will characterize the ionospheric outflows, also measured simultaneously by FAST, with respect to auroral electron precipitation. We will examine both the location and intensity of outflows, as well as the variability in these.
Collin Henry
Peria W. J.
Peterson William K.
Winglee Robert M.
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