Physics
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..597e&link_type=abstract
Geophysical Research Letters, vol. 7, Aug. 1980, p. 597-600.
Physics
Auroral Arcs, Earth Orbits, Energetic Particles, Polar Substorms, Stationary Orbits, Earth Magnetosphere, Flux (Rate), Night Sky, Radii
Scientific paper
A systematic temporal correlation has been found between the energetic particle intensity variations measured at 6.6 earth radii and the development of large scale auroral features. The intensification and equatorward drift of eastwest oriented stable discrete homogeneous auroral arc systems coincide with the decrease in energetic particle intensity at 6.6 earth radii as the nightside magnetosphere develops into a more tail-like configuration. The subsequent major breakup of the aurora coincides with the recovery in particle intensity as the field returns to a more dipolar configuration. Since this prominent decrease-increase sequence must be related to the intensification or inward convection of the tail current plasma sheet configuration followed by its diversion or dissipation, the auroral correlation documented here closely links the auroral particle precipitation to the plasma sheet and tail current dynamics.
Erickson K. N.
Winckler John R.
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