O+ Outflow in the Multi-Fluid LFM: Effects on Cross Polar Cap Potential

Details O+ Outflow in the Multi-Fluid LFM: Effects on Cross Polar Cap Potential O+ Outflow in the Multi-Fluid LFM: Effects on Cross Polar Cap Potential

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm13c1620g&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM13C-1620

Physics

[2736] Magnetospheric Physics / Magnetosphere/Ionosphere Interactions, [2740] Magnetospheric Physics / Magnetospheric Configuration And Dynamics, [2753] Magnetospheric Physics / Numerical Modeling

Scientific paper

The ability to adjust individual parameters in global MHD models allows these models to be used as virtual laboratories to examine the effect of changes in outflow fluxes. The effect of oxygen on cross polar cap potential has been a topic of much discussion in the MHD modeling community. We show here the effects of ionospheric O+ outflow in the MFLFM multi-fluid MHD model. Utilizing idealized solar wind conditions and constant nightside auroral region outflow, we examine global effects of oxygen outflow. We demonstrate the correspondence of a buildup in O+ pressure in the plasmasheet with changes in magnetotail geometry and cross polar cap potential.

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