HR: 14:25h
AN: SM43D-04 INVITED     [Abstracts]
TI: Solar Cycle Dependence of the Outer Radiation Belt
AU: * Onsager, T
EM: terry.onsager@noaa.gov
AF: NOAA Space Environment Center, 325 Broadway, Boulder, CO 80305 United States
AU: Green, J
EM: janet.green@lasp.colorado.edu
AF: LASP, University of Colorado, Boulder,
AU: Wrenn, G
EM: gordon.wrenn@tiscali.co.uk
AF: QinetiQ, Farnborough, Hampshire, United Kingdom
AU: Singer, H
EM: howard.singer@noaa.gov
AF: NOAA Space Environment Center, 325 Broadway, Boulder, CO 80305 United States
AB: Earth's outer electron radiation belt is an enormous reservoir of energetic particles that is dynamically driven by the solar wind. The radiation belt particles originate predominately in the solar wind and are accelerated in various stages within the magnetosphere. The solar wind controls the efficiency of its own entry into the magnetosphere and the energization and loss of the particles within the magnetosphere. Under certain conditions, the radiation belts are found to be remarkably sensitive to changes in the solar wind, while at other times quite insensitive to the solar wind. This presentation will describe the observed variability of the outer electron radiation belt to solar wind dynamics over the most recent solar cycle. This will include the long-term variability, on solar cycle to seasonal time scales, as well as the short-term variability driven by transient disturbances in the solar wind.
DE: 2720 Energetic particles, trapped
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA-Magnetospheric Physics [SM]
MN: 2005 Joint Assembly