HR: 0800h
AN: SM31B-1224    [Abstracts]
TI: Ionospheric Convection Pattern for Sawtooth Events from AMIE Simulation
AU: * Cai, X
EM: xcai@umich.edu
AF: Space Research Laboratory, 2455 Heyward Street , Ann Arbor, MI 48105
AU: Clauer, C R
EM: rclauer@umich.edu
AF: Space Research Laboratory, 2455 Heyward Street , Ann Arbor, MI 48105
AU: Ridley, A J
EM: ridley@umich.edu
AF: Space Research Laboratory, 2455 Heyward Street , Ann Arbor, MI 48105
AB: Sawtooth events are quasi-periodic, large-amplitude oscillations of energetic particle flux enhancement with a periodicity of 2-4 hours, which are observed globally and simultaneously at the geosynchronous orbit. Statistical studies of sawtooth events imply an enhanced solar wind - magnetosphere - ionosphere coupling. Herein the ionosphere convection potentials and currents systems are examined using the Assimilative Mapping of Ionospheric Electrodynamics (AMIE) simulation results. Comparison of convection pattens for sawtooth events with isolated substorms, steady magnetosphere convection (SMC) events are also made.
DE: 2708 Current systems (2409)
DE: 2712 Electric fields (2411)
DE: 2736 Magnetosphere/ionosphere interactions
DE: 2784 Solar wind/magnetosphere interactions
DE: 2788 Storms and substorms
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting