Physics
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsm31b..03b&link_type=abstract
American Geophysical Union, Spring Meeting 2007, abstract #SM31B-03
Physics
2720 Energetic Particles: Trapped, 2730 Magnetosphere: Inner, 2768 Plasmasphere, 2774 Radiation Belts
Scientific paper
During and following the Halloween Storm period (October-November 2003), the Van Allen belt electron population was powerfully accelerated and redistributed inward. From November 1 to November 10, 2003, the outer belt had its center only at about 2.5 RE geocentric distance. As shown in published papers using IMAGE spacecraft data, the Earth's plasmasphere was displaced inward (to an unprecedented degree) in late October 2003, and concurrently the whole radiation belt structure was transformed. The region between the Van Allen belts, normally devoid of particles, became the location of highest radiation belt particle intensities. After the magnetosphere relaxed to a more normal outer belt configuration, the new belt of electrons decayed over a period of days to years. We have examined quantitatively the loss rates for electrons seen in the region of 1.5 ≤ L ≤ 3.0 using SAMPEX observations. We compare these loss rates to those expected from prior observational and theoretical studies.
Baker Daniel N.
Kanekal S.
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