Physics
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.3153s&link_type=abstract
Journal of Geophysical Research, vol. 88, Apr. 1, 1983, p. 3153-3157.
Physics
10
Auroral Spectroscopy, Forbidden Transitions, Near Ultraviolet Radiation, Nitrogen Atoms, Sky Radiation, Atmospheric Chemistry, Daytime, Night, Optical Emission Spectroscopy, Particle Precipitation, Solstices, Spectrophotometers, Ultraviolet Spectra, Winter
Scientific paper
The N I 3466 A and 5200 A multiplet radiations were spectrophotometrically monitored simultaneously from several nighttime and daytime auroras during winter solstice periods at Svalbard. The auroras' average precipitating particle energy ranged from a few keV at night to less than 100 eV in the midday cusp section of the auroral oval, and the corresponding atmospheric heights of peak auroral energy deposition varied from about 110 km, where molecular species dominate, to above 200 km, where atomic species are more dominant. Using clear sky measurements during steady auroras, it is found that the average value of the 5200 A/3466 A intensity ratio is 1.8 + or - 0.4.
Marshall Alan R.
Sivjee G. G.
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