Computer Science – Sound
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.1333m&link_type=abstract
Journal of Geophysical Research, vol. 84, Apr. 1, 1979, p. 1333-1346. National Research Council of Canada
Computer Science
Sound
7
Auroral Arcs, Electron Density Profiles, Electron Energy, Satellite Observation, Spectrophotometry, Electrostatic Probes, Isis-B, Northern Hemisphere, Optical Emission Spectroscopy, Optical Scanners, Polar Orbits
Scientific paper
All of the data presented in this paper were obtained from the Isis 2 satellite, which was launched into a 1400-km near-circular polar orbit in April 1971. Instruments used in this study include the topside sounder for providing vertical profiles of the electron density, the Langmuir probe for measuring electron temperature and concentration, and the auroral scanning photometer for detecting optical emissions at 5577 A and 3914 A. Two distinct types of auroras (east-west-aligned oval-shaped 'patches', and isolated east-west 'detached arcs') are observed in the trough region (almost exclusively in the Northern Hemisphere) equatorward of the diffuse auroral boundary. Attention is given to comparison of patches and detached arcs, relation to magnetic indices, and relation to detached plasma and ELF hiss.
Anger Clifford D.
Brace Larry H.
Moshupi Matthew Coffat
Murphree John S.
Wallis Don D.
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