Statistics – Applications
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm42c07f&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SM42C-07
Statistics
Applications
2111 Ejecta, Driver Gases, And Magnetic Clouds, 2162 Solar Cycle Variations (7536), 2704 Auroral Phenomena (2407), 2716 Energetic Particles, Precipitating, 2720 Energetic Particles, Trapped
Scientific paper
The two most important particle populations in the radiation belts are the ring current particles and relativistic electrons, but for practical effects, the latter particles are the most important. Both populations are highly dynamic and both can be intensified during disturbed geomagnetic conditions. The work detailed in this presentation will relate the relativistic electron flux intensities measured at geosynchronous altitudes to the strength of the ring current, measured by Dst index, during magnetic storms. The most important region of geospace for evaluating the effects of Coronal Mass Ejections on the relativistic electron fluxes is geosynchronous orbit, because it is the transit region between the stretched magnetotail and the more dipolar inner magnetosphere. It is the region where substorm injections are most commonly observed and is the source region for the build up of the ring current during magnetic storms and possibly for the acceleration of radiation belt electrons to relativistic energies. For practical applications, this altitude is also significant because of the large concentration of satellites. In addition to reviewing the variations at geosynchronous orbit, we will also present data from lower altitudes in the form of L-value spectrograms from the GPS network and the SAMPEX satellite in order to correlate these populations with those at geosynchronous orbit.
Baker Daniel N.
Fox Nicola J.
Friedel Reiner
Kanekal S.
Reeves Geoff D.
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