Observations of gravity wave propagation in the OI (557.7 nm), Na (589.2 nm) and the near infrared OH nightglow emissions

Details Observations of gravity wave propagation in the OI (557.7 nm), Na (589.2 nm) and the near infrared OH nightglow emissions Observations of gravity wave propagation in the OI (557.7 nm), Na (589.2 nm) and the near infrared OH nightglow emissions

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987p%26ss...35..413t&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 35, April 1987, p. 413-427.

Computer Science

68

Gravity Waves, Nightglow, Spectral Emission, Wave Propagation, Hydroxyl Emission, Infrared Spectra, Oxygen Spectra, Propagation Modes

Scientific paper

Images of a wave-like structure in three nightglow emissions with different height profiles, the OI (557.7 nm) and Na (589.2 nm) lines and the OH bands between 715 and 810 nm, have been obtained with a low-light TV system. A bright, well defined, curved wave pattern seen in these emissions on the evening of August 14, 1980 from the Gornergrat Observatory, Switzerland has been identified as the signature of a short period gravity wave propagating freely through the upper atmosphere in the height interval 80-100 km from a region over south-west France. The best fit parameters of the wave disturbance which produced the structures in the three airglow layers are wavelength = 6.5 + or - 1.5 km, phase velocity = 5 + or - 2 m/s (period = 21 + or - 1 min), and phase propagation angle = 75 + or - 3 deg, and were obtained by assuming a background wind with a horizontal component of 18 m/s.

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