DYNAMIC EVOLUTION OF THE RADIATION BELT PHASE SPACE DENSITY OBTAINED WITH REANALYSIS WITH SIMULTANIOUS OBSERVATIONS FROM FOUR SPACECRAFT

Details DYNAMIC EVOLUTION OF THE RADIATION BELT PHASE SPACE DENSITY OBTAINED WITH REANALYSIS WITH SIMULTANIOUS OBSERVATIONS FROM FOUR SPACECRAFT DYNAMIC EVOLUTION OF THE RADIATION BELT PHASE SPACE DENSITY OBTAINED WITH REANALYSIS WITH SIMULTANIOUS OBSERVATIONS FROM FOUR SPACECRAFT

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm51a1332s&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM51A-1332

Physics

Plasma Physics

[7807] Space Plasma Physics / Charged Particle Motion And Acceleration, [7867] Space Plasma Physics / Wave/Particle Interactions, [7959] Space Weather / Models, [7984] Space Weather / Space Radiation Environment

Scientific paper

We present radiation belt relativistic electron phase space density (PSD) obtained from the data-assimilative VERB-1D code in combination with observations from LANL GEO, CRRES, Akebono, and GPS. Reanalysis of the data shows pronounced peaks in the phase space density and pronounced flux drop outs during the main phase of many storms. Reanalysis of 441 days during the CRRES period shows that dramatic deletions of the radiation belts occur during specific solar wind conditions. Finally, we present a statistical analysis of radiation belt flux drop outs and discuss physical mechanisms that can account for the loss of radiation belt electrons. The results of the reanalysis are discussed and compared to the simulations performed with the recently developed VERB 3D code.

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