Physics
Scientific paper
Jun 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.2153y&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 11, p. 2153-2156
Physics
30
Atmospheric Composition And Structure: Middle Atmosphere-Energy Deposition, Meteorology And Atmospheric Dynamics: Middle Atmosphere Dynamics, Meteorology And Atmospheric Dynamics: Turbulence, Meteorology And Atmospheric Dynamics: Waves And Tides
Scientific paper
We report on observations of small-scale gravity wave breaking into turbulence around the mesopause height using an OH airglow CCD camera and a meteor radar performed on December 23, 1995 in Japan. The small-scale gravity wave propagated against the background wind with a horizontal wavelength of ~27 km, an apparent horizontal phase velocity of ~7 ms-1, and an intrinsic period of ~5.6 minutes. Wave breaking event began with an appearance of smaller-scale structures, which were aligned parallel to the phase fronts of the breaking wave and advanced into more random, turbulence-like features. The instability structures were present in the OH images for about 40 minutes.
Fukunishi Hiroshi
Nakamura Takashi
Tsuda Teruhisa
Yamada Yasuhiko
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