HR: 14:45h
AN: SM43D-05    [Abstracts]
TI: Solar cycle changes of energetic particle properties in the Earth's radiation belts
AU: * Baker, D N
EM: daniel.baker@lasp.colorado.edu
AF: Laboratory for Atmospheric and Space Physics, Univ. of Colorado 1234 Innovation Drive, Boulder, CO 80303-7814 United States
AU: Kanekal, S G
EM: Shrikanth.Kanekal@noaa.gov
AF: Laboratory for Atmospheric and Space Physics, Univ. of Colorado 1234 Innovation Drive, Boulder, CO 80303-7814 United States
AU: Li, X
EM: lix@paracel.colorado.edu
AF: Laboratory for Atmospheric and Space Physics, Univ. of Colorado 1234 Innovation Drive, Boulder, CO 80303-7814 United States
AU: Blake, J B
EM: Jbernard.blake@aero.org
AF: The Aerospace Corporation, Space Sciences Laboratory Mail Stop 259, PO Box 92957, Los Angeles, CA 90009 United States
AB: The near-Earth responds powerfully to changes of the Sun and subsequently the solar wind. The Earth's radiation belts and inner magnetosphere show pronounced differences in their characteristics as the Sun's magnetic and solar wind plasma properties change. Solar coronal holes produce regular, recurrent solar wind streams in geospace, often enhancing highly relativistic electrons and causing recurrent magnetic storms. These phenomena are characteristics of the approach to solar minimum. This is the phase of the 11-year solar cycle in which we presently are situated. On the other hand, major geomagnetic disturbances associated with aperiodic coronal mass ejections occur most frequently around solar maximum. We describe the observational and modeling results that describe differences throughout the inner part of geospace during the course of the 11-year solar cycle. We place particular emphasis on long-term, homogeneous data sets from the SAMPEX and POLAR missions.
DE: 2716 Energetic particles, precipitating
DE: 2720 Energetic particles, trapped
DE: 2784 Solar wind/magnetosphere interactions
DE: 2788 Storms and substorms
SC: SPA-Magnetospheric Physics [SM]
MN: 2005 Joint Assembly