Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm31a2093r&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SM31A-2093
Physics
[2407] Ionosphere / Auroral Ionosphere, [2431] Ionosphere / Ionosphere/Magnetosphere Interactions, [2736] Magnetospheric Physics / Magnetosphere/Ionosphere Interactions
Scientific paper
Contemporary magnetosphere modelers are now including species dependent dynamics. Energetic O+ has significant consequences for the ring current stored energy and perhaps the timing of substorm injections. The mechanism by which thermal O+ escapes from the top of the ionosphere and into the magnetosphere is not fully understood. The history of field lines and the importance of this history as a function of MLT in driving O+ outflows has not been fully investigated as contributor to the physical explanation of various outflow features. In this study we used the Field Line Inter-hemispheric Plasma (FLIP) model to model thermal flows in the auroral zone. We will present 1) a comparison of modeled flows to flows observed by DMSP at 800 km and 2) contributions of low altitude processes to creating the asymmetries in dayside vertical O+ flows observed by several instruments over the last 3 decades.
Andersson L.-L.
Peterson William K.
Redmon R. J.
Richards Paul G.
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