Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm72b0630b&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SM72B-0630
Physics
2736 Magnetosphere/Ionosphere Interactions, 2740 Magnetospheric Configuration And Dynamics, 2784 Solar Wind/Magnetosphere Interactions, 2788 Storms And Substorms
Scientific paper
The rotation of the Earth's tilted magnetic dipole produces a corotation electric field that dominates the electrodynamics of the inner magnetosphere. In particular, it is responsible for the eastward drift of cold plasma in the plasmasphere. However, the extent to which the stretched (but closed) magnetic field lines of the near-earth magnetotail are influenced by the corotation of their ionospheric footpoints is unclear. To what extent might there be decoupling of corotation on stretched magnetic field lines and what effect does dipole tilt have on this decoupling? In this paper we use conjugate ionospheric and magnetospheric measurements to investigate this question. We map SuperDARN measurements of ionospheric convection to the magnetosphere using Tsyganenko magnetic field models and compare with conjugate measurements of magnetospheric drift obtained from the Cluster spacecraft.
Baker Joseph B.
Greenwald Ray A.
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