The association of visible airglow features with a gravity wave

Details The association of visible airglow features with a gravity wave The association of visible airglow features with a gravity wave

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jatp...44..325a&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 44, Apr. 1982, p. 325-336.

Physics

33

Airglow, Gravity Waves, Infrared Photography, Oxygen Atoms, Equatorial Regions, Hydroxyl Radicals, Nightglow, Northern Sky, Photometry, Troposphere, Visibility

Scientific paper

A faintly visible pattern was observed by eye in the northern region (towards the equator) of the clear, moonless sky on one night. Photographic and photometric observations indicated that the pattern was not due to auroral activity, but was probably caused by the effect of a gravity wave, launched from the troposphere, on the OI 557.7 nm airglow emission. A period of 57 min, a wavelength of 244 km and a speed of 72 m/s were obtained from the photographs. The direction of travel was southward (towards the pole). Possible ways in which the gravity wave produced the pattern are considered. The visibility appeared to have been due to favorable contrast rather than unusual brightness in the pattern. The passage of gravity waves in the 80-100 km region is thought to be the cause of one class of bright night.

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