Statistics – Applications
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996esasp.392..143f&link_type=abstract
Environment Modelling for Space-based Applications, Symposium Proceedings (ESA SP-392). ESTEC Noordwijk, 18-20 September 1996. E
Statistics
Applications
Scientific paper
The distribution of electrons and protons with L-value (L < 8) as measured by three instruments on board CRRES over the whole mission lifetime (07.1990 - 10.1991) is presented. CRRES is well suited for examining the particle budget (electrons100 eV - 1.6 MeV, ions 10 eV - 3 MeV) over long periods. It shows the outer radiation belt to be very dynamic, both in position and in strength. We attempt here to use single-spacecraft data to drive a model for the whole of the inner magnetosphere. We represent the energetic particle flux in the equatorial plane only. A CRRES half-orbit is used to obtain a "slice" through the inner magnetosphere. For each radial position of CRRES we trace the corresponding drift shell and assign flux values to all MLT based on the MLT profile given by the AE-8 model, but scaled by the measurement at the CRRES position. In this way a "map" of the inner magnetosphere is obtained every 5.5 hours; yielding a total of over 2000 frames which have been assembled into a video sequence. This work shows how data and models can be combined to give a useful representation of the inner magnetosphere. With today's near-real time data acquisition such a model can provide an up-to-date environment report on the radiation belts.
Friedel Reiner H. W.
Korth Alex
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