Computer Science – Sound
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.2321j&link_type=abstract
Journal of Geophysical Research, vol. 87, Apr. 1, 1982, p. 2321-2329. Research supported by the Southwest Research Institute an
Computer Science
Sound
89
Auroral Arcs, Electron Precipitation, Isis-B, Satellite Observation, Thermal Plasmas, Bursts, Electron Energy, Energy Spectra, Pitch (Inclination), Plasma Layers, Rocket Sounding, Spatial Distribution
Scientific paper
Data from the ISIS 2 satellite are used to study the spatial distribution of the suprathermal electron bursts discovered by high-altitude sounding rockets. It is found that the bursts form an integral part of the boundary plasma sheet and are linked with the formation of discrete auroral arcs. The maximum energy of the bursts is always below the peak energy in neighboring discrete forms, and it appears that if the bursts fail to reach the minimum energy found to be necessary to sustain a discrete arc they collapse within a few seconds. It is suggested that in a pass across the auroral oval the overall envelope of the maximum energy in bursts and the peak energy in discrete auroral forms reflect the variation of the available acceleration (perhaps a parallel electric potential) across the auroral oval while the energy structure in individual forms is a function of the nonlinear processes which sustain them. This explanation appears to resolve the apparent discrepancy in scale thickness between rocket and satellite inverted V's.
David Winningham J.
Johnstone Alan D.
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