Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm32b..05e&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SM32B-05
Physics
[2730] Magnetospheric Physics / Magnetosphere: Inner, [2736] Magnetospheric Physics / Magnetosphere/Ionosphere Interactions, [2740] Magnetospheric Physics / Magnetospheric Configuration And Dynamics, [2764] Magnetospheric Physics / Plasma Sheet
Scientific paper
Energetic O+ of ionospheric origin play a key role in the formation of the storm-time ring current. Significant populations of outflowing O+ have been observed escaping the ionosphere during geomagnetically quiet conditions. In this effort we examine the period preceding the geomagnetic storm of January 10-11, 1997 to study the quiet time access of ionospheric O+ to the near-Earth plasmasheet and inner magnetosphere. Global MHD/particle simulations of outflowing oxygen during this period are performed to examine the transit of eV and keV ions between the ionosphere and ring current. Low altitude observations of oxygen of ionospheric origin are used to inform the simulations of boundary ion distributions, and the results used to estimate the distribution of ions in the plasmasheet available for injection into the ring current during storm main phase.
Elkington Scot R.
McCollough J. P.
Peterson William K.
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