The application of spectroscopic studies of the aurora to thermospheric neutral composition

Details The application of spectroscopic studies of the aurora to thermospheric neutral composition The application of spectroscopic studies of the aurora to thermospheric neutral composition

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38...67l&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 38, Jan. 1990, p. 67-78.

Computer Science

18

Atmospheric Composition, Auroral Spectroscopy, Oxygen, Spectrum Analysis, Thermosphere, Abundance, Atmospheric Models, Electron Precipitation, Electron Transfer, Emission Spectra, Nitrogen

Scientific paper

The relationship between selected auroral emission features and the relative atomic oxygen abundance in the auroral thermosphere is investigated using measurements at 7320 A (OII emission), 4278 A (N2/+/1N), 4861 A (H-beta), 6300 A (OI), and 8446 A (OI), carried out with a multichannel tilting filter photometer at Poker Flat (Alaska) and model results from an electron transport code. It is shown that changes in the ratio of I(8446)/I(4278) observed on September 25, 1987, a day with strong auroral activity, indicated an oxygen depletion of about 50 percent within the timescale of a few hours.

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