Diffusion and injections in the radiation belts: L shell coupling

Details Diffusion and injections in the radiation belts: L shell coupling Diffusion and injections in the radiation belts: L shell coupling

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm51a0504v&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SM51A-0504

Physics

2720 Energetic Particles, Trapped, 2722 Forecasting, 2730 Magnetosphere: Inner, 2784 Solar Wind/Magnetosphere Interactions

Scientific paper

The outer zone of the electron radiation belts is divided in three main regions in L shell: the P0 region (L=3-4 approx.), the P1 region (L=4-7) or heart of the outer zone, and the P2 region (L>7) which is related to the cusp and plasma sheet [Vassiliadis et al., JGR 2002; Phys. Plasmas, 2003]. We measure the correlation between fluxes at adjacent and nearby L shells. We use autoregressive models to account for the coupling. The correlation values and the model coefficients are interpreted in terms of slow diffusion (time scales >=2 days) and rapid injections (<1 day). We parametrize the response by the electron energy measured by SAMPEX/PET fluxes at 2-6 MeV and EXOS-C/HEP at 0.19-3.5 MeV.

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