HR: 0800h
AN: SM21A-0319    [Abstracts]
TI: Modulation of the Fluxes of Energetic Particles in the Inner Magnetosphere Associated With Storm Conditions
AU: * Cash, M D
EM: mcash@ess.washington.edu
AF: University of Washington, Box 351310, Seattle, WA 98115, United States
AU: Winglee, R M
EM: winglee@ess.washington.edu
AF: University of Washington, Box 351310, Seattle, WA 98115, United States
AB: During storms, induced electric and magnetic fields within the magnetosphere lead to the build up of energetic particles within the ring current and radiation belts. Two important processes that can lead to particle energization and increased inward transport are compression of the magnetosphere by enhanced solar wind dynamic pressure, which accompanies many magnetic storms, and pumping from storm-time substorms. These two processes are examined with single particle-tracking coupled to global multi-fluid simulations. This combined approach allows a consistency to be kept for the influence of heavy ions on the dynamics of the system. Two cases are examined: with and without insufficient O+ outflow to produce cross-polar cap saturation. It is shown during the early stages, where the compressional effects dominate, the energization of the particles and their inward motion are approximately the same. During the later stages, where storm-time substorms are important, the energization and inward motion is very different between the two cases.
DE: 7846 Plasma energization
DE: 7847 Radiation processes
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting