Exploring Solar-Wind/Magnetosphere/Ionosphere Connections (Invited)

Details Exploring Solar-Wind/Magnetosphere/Ionosphere Connections (Invited) Exploring Solar-Wind/Magnetosphere/Ionosphere Connections (Invited)

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm11d..04b&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM11D-04

Physics

[2700] Magnetospheric Physics

Scientific paper

Superposed-epoch analysis of several data sets is employed to study the coupled solar-wind/magnetosphere/ionosphere system. Three stormtime couplings are highlighted. (1) During CIR-driven storms the enhanced solar-wind density owing to the compression of the slow wind produces a superdense plasma sheet in the magnetosphere which is temporally connected to the stormtime dropout and recovery of relativisitic electrons in the outer radiation belt. (2) During CIR-driven storms, the reversed IMF sector structure upstream of the stream interface drives a calm before the storm and the calm results in a filling of the outer plasmasphere which in turn results in a pre-storm decay of the outer electron radiation belt. (3) During CME- or CIR-driven storms a calm before the storm leads to a cool dense plasma sheet which results in better ring-current fuel and a larger Dst perturbation during the storm.

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