HR: 17:40h
AN: SM24A-07    [Abstracts]
TI: Energetic particles boundaries in the inner magnetosphere observed by the Cluster
AU: * XIE, L
EM: Xielun@pku.edu.cn
AF: Center for Space Physics, Boston University, 725 Commomwealth Ave., Bosotn, MA 02215 United States
AU: Zong, Q
EM: zong@bu.edu
AF: Center for Space Physics, Boston University, 725 Commomwealth Ave., Bosotn, MA 02215 United States
AU: Fritz, T
EM: fritz@bu.edu
AF: Center for Space Physics, Boston University, 725 Commomwealth Ave., Bosotn, MA 02215 United States
AB: Energetic particles (ions and electrons) boundaries between the outer plasma sheet and the inner magnetosphere are often observed by Cluster spacecraft. Ions and electrons boundaries show obvious different. Such kind of sharp energetic interfaces could provide us an important tool of remote sensing of distant equatorial boundaries, e.g. distant neutral lines, last closed field lines (LCFL) or near Earth neutral line (NENL) etc. On Feb.02, 2003 at 14-16UT when the Cluster constellation was near the perigee(~4Re) and at local midnight, three obvious boundary structures were consecutive observed by the Cluster with a large separated configuration during a strong magnetospheric substorm (AE~1200nT). The locations of the two boundaries mapped to the equatorial tail are presumably ~10Re and ~30Re respectively. The energetic particle boundaries signatures detected by CLUSTER/RAPID in the four separated locations of Cluster provide us detailed information about the location of distant equatorial boundaries generated by different mechanism. In addition, NOAA and Geosynchronous spacecraft data are also investigated for a consistent global picture.
DE: 2723 Magnetic reconnection (7526, 7835)
DE: 2730 Magnetosphere: inner
DE: 2774 Radiation belts
DE: 2788 Magnetic storms and substorms (7954)
DE: 7514 Energetic particles (2114)
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005