Computer Science – Sound
Scientific paper
Jul 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985georl..12..457w&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 12, July 1985, p. 457-460.
Computer Science
Sound
10
Auroral Zones, Beam Injection, Electron Beams, Extremely Low Frequencies, Magnetohydrodynamic Waves, Plasma Drift, Auroras, Electric Fields, Ionospheric Conductivity, Ionospheric Electron Density, Plasma Diagnostics, Sounding Rockets
Scientific paper
Orthogonal probes on a free-flying plasma diagnostics payload are used to study ELF electric disturbances in the auroral ionosphere that are due to the injection of powerful electron beams. Frequency spectrograms are presented for various pitch angles, pulsing characteristics, and other properties of the injected beams; the large scale DC ionospheric convection electric field is measured, together with auroral particle precipitation, visual auroral forms, and ionospheric parameters. In view of the experimental results obtained, it is postulated that the observed ELF waves are in the Alfven and drift modes, and are generated by the positive vehicle potential during beam injection.
Abe Yasuhiro
Erickson K. N.
Malcolm P. R.
Steffen J. E.
Winckler John R.
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