Modeling Saw-Tooth Injections During April 17-18, 2002

Details Modeling Saw-Tooth Injections During April 17-18, 2002 Modeling Saw-Tooth Injections During April 17-18, 2002

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsa21b0439k&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SA21B-0439

Physics

2475 Polar Cap Ionosphere, 2778 Ring Current

Scientific paper

During April 2002, a number of magnetic storm occurred in the magnetosphere, which included a number of interesting features. One of these is sawtooth-type injections, observed by geosynchronous satellites on April 18. During the same period, oscillations were also observed in the cross polar cap potential. At the present time, the relation between these two phenomena as well as the source of the quasi-periodic injections is not understood. Using a combination of the BATSRUS global MHD simulation developed by the University of Michigan and Mei-Ching Fok's ring current model, we will examine the relationship between injections in the inner magnetosphere and the underlying magnetospheric dynamics. In particular, we will examine the timing of the oscillations in the cross polar cap potential and injections in the ring current, as well as their causal connection. Our results will be compared to the observations during the period of interest.

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