A multi-spacecraft synthesis of relativistic electrons in the inner magnetosphere using LANL, GOES, GPS, SAMPEX, HEO and POLAR

摘要

One of the Brussels Radiation Belt Workshop recommendation was the establishment of a near-real-time data driven model of the inner magnetospheric energetic particle population (L < 8). Although the "ideal" missions and data sets for such a model do not exist at present, more spacecraft than ever before are currently sampling the inner magnetosphere. We attempt here in a case study of the 10 January, 1997 magnetic cloud event to construct such a model with the energetic electron data available from 5 geosynchronous and 6 elliptically orbiting satellites. We examine the constraints and difficulties of putting together a large number of datasets which are measured near-simultaneously at very different locations in the inner magnetosphere. First results indicate that we can achieve a time resolution of about 3 h for a given "snapshot" of the inner magnetosphere, and that large azimuthal asymmetries of the energetic electron population can be observed during large storms. (C) 1999 Elsevier Science Ltd. All rights reserved. [References: 15]