Computer Science – Sound
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....9111337c&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 91, Oct. 1, 1986, p. 11337-11344.
Computer Science
Sound
45
Atmospheric Composition, Auroral Zones, Molecular Spectra, Nitric Oxide, Rocket Sounding, Dayglow, Photochemical Reactions, Rocket-Borne Instruments, Spectral Bands, Ultraviolet Spectroscopy, Vertical Distribution
Scientific paper
Spectra of the earth's thermospheric dayglow were obtained with a rocket-borne ultraviolet spectrometer. Three of the weak NO epsilon bands were identified and used to determine NO densities below 125 km. The (1,0) and (2,0) gamma bands showed much stronger self-absorption at low altitudes than predicted by calculations. At low altitudes, the intensities of the delta bands were used to obtain a value of 0.25 for the delta band fluorescence efficiency. The NO density profile was compared with the results of a one-dimensional photochemical model. A good fit was obtained for a simulated aurora with a characteristic energy of 10 keV and a constant energy flux of 0.5 erg/sq cm/s.
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