Computer Science
Scientific paper
Feb 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979p%26ss...27..169g&link_type=abstract
Planetary and Space Science, vol. 27, Feb. 1979, p. 169-181.
Computer Science
2
Auroras, Oxygen Spectra, Spectrum Analysis, Auroral Zones, Luminous Intensity, Nitrogen, Red Arcs
Scientific paper
The paper describes attempts over several years to improve observations of the type-B aurora by using a high-speed multichannel photometer in conjunction with a digital photoelectric spectrometer. A series of spectra were obtained in the 5200-5300 A region which permits a direct comparison of the N2(+) First Negative and O2(+) First Negative systems. These spectra give a good measure of the value of this ratio in several red lower borders and normal auroral bands of different intensities. The time variations and spectral ratio changes between type-B and normal auroras have been interpreted in terms of a model for the excitation of electron auroras (Vallance Jones, 1975). Results lead to the suggestion that there may be red lower borders which do not lie below 100 km; these may be distinct from the deep crimson borders which have been detected at 80 km or lower.
Gattinger Richard L.
Jones Vallance A.
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