Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm11a1542w&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SM11A-1542
Physics
[2730] Magnetospheric Physics / Magnetosphere: Inner, [2753] Magnetospheric Physics / Numerical Modeling, [2778] Magnetospheric Physics / Ring Current, [2788] Magnetospheric Physics / Magnetic Storms And Substorms
Scientific paper
We quantitatively investigate the degree to which the basic characteristics of the injection of a storm-time ring current depend on the pitch-angle distribution. The investigation centers on a comparison of two simulations of the August 12, 2000 storm: one based on the Rice Convection Model (RCM), which assumes an isotropic pitch angle distribution, and the other on the Comprehensive Ring Current Model (CRCM), which calculates the pitch angle distribution in detail. Results from the two runs are compared with regard to the main-phase increase in the energy in ring current particles, the strength and distribution of the region-2 currents, and the strength and pattern of the prompt-penetration electric field. We also compare the recovery phase characteristics predicted by the CRCM, which carefully calculates the changes in pitch-angle distribution as charge exchange proceeds, and the RCM, which uses a much simpler way of estimating charge-exchange loss.
Buzulukova N.
Fok M. H.
Sazykin Stanislav
Wan Yujie
Wolf Robert
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