HR: 0800h
AN: SM51B-0370    [Abstracts]
TI: Particle Diffusion in Heliospheric Vortex Flows
AU: * Verkhoglyadova, O P
EM: olgav@ucr.edu
AF: IGPP, University of California, Riverside, 900 University Ave., Riverside, CA 92521-0412 United States
AU: le Roux, J A
EM: Jakobus@citrus.ucr.edu
AF: IGPP, University of California, Riverside, 900 University Ave., Riverside, CA 92521-0412 United States
AB: Vortex steets were revealed in satellite measurements in the helisophere. They can efficiently affect energetic particle transport. Numerical study of cosmic ray diffusion in a presence of a layer of vortex flows is performed. Random phase linear waves with a power-law spectrum are introduced to the system. This model represents a mixture of coherent structures which belong to strong turbulence and weak turbulence effects in the medium. Different diffusion regimes, i.e. classical diffusion, subdiffusion and superdiffusion, are analyzed. Importance of regular and stochastic components is studied. Comparison with theoretical estimates for radial transport coefficients is made.
DE: 7839 Nonlinear phenomena
DE: 7859 Transport processes
DE: 2114 Energetic particles, heliospheric (7514)
DE: 2149 MHD waves and turbulence
DE: 2752 MHD waves and instabilities
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting