Physics
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17.1837o&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 17, Oct. 1990, p. 1837-1840. Research supported by DOE, NASA, and Los Alamos
Physics
43
Atmospheric Boundary Layer, Boundary Layer Plasmas, Electron Distribution, Geomagnetic Tail, Plasma Sheaths, Electrostatic Waves, Magnetic Field Reconnection
Scientific paper
The electron edge of the plasma sheet boundary layer lies lobeward of the ion edge. Measurements obtained near the electron edge of the boundary layer reveal low-speed cutoffs for earthward and tailward-flowing electrons. These cutoffs progress to lower speeds with deeper penetration into the boundary layer, and are consistently lower for the earthward-directed electrons than for the tailward-direction electrons. The cutoffs and their variation with distance from the edge of the boundary layer can be consistently interpreted in terms of a time-of-flight effect on recently reconnected magnetic field lines. The observed cutoff speeds are used to estimate the downtail location of the reconnection site.
Bame J. Jr. S.
Gosling Jack T.
Onsager T. G.
Thomsen Michelle F.
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