Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm23b1695g&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SM23B-1695
Physics
2736 Magnetosphere/Ionosphere Interactions (2431), 2744 Magnetotail, 2760 Plasma Convection (2463)
Scientific paper
In a series of global magnetohydrodynamic simulations of the interaction of the solar wind with the Earth's magnetosphere we explored magnetospheric convection during prolonged intervals with southward interplanetary magnetic field and found strong tailward flows on closed magnetic field lines. These flows were part of large scale vortices in the magnetosphere. In this study, we will present results from an observational study using plasma flow and magnetic field observations from Geotail, Cluster and THEMIS. We have found several intervals during which prolonged southward IMF was followed by tailward flow coupled with a northward magnetic field in the plasma sheet. These flow observations were coupled with poleward convection in SUPERDARN observations of the ionosphere. A statistical study of the conditions which lead to tailward convection coupled with northward magnetic field in the plasma sheet will be presented.
Gao Yanfang
Kivelson Margaret
Lester Mark
Walker Raymond
Weygand J.
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