Physics – Atmospheric and Oceanic Physics
Scientific paper
Feb 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976fizao..11..681g&link_type=abstract
(Akademiia Nauk SSSR, Izvestiia, Fizika Atmosfery i Okeana, vol. 11, July 1975, p. 681-689.) Academy of Sciences, USSR, Izvestiy
Physics
Atmospheric and Oceanic Physics
Acoustic Attenuation, Atmospheric Attenuation, Gravity Waves, Planetary Atmospheres, Wave Attenuation, Anisotropic Media, Atmospheric Turbulence, Earth Atmosphere, Mars Atmosphere, Turbulence Effects, Venus Atmosphere, Wave Equations
Scientific paper
The dispersion and polarization relations as well as the damping coefficient of acoustic-gravitational waves (AGWs) propagating in planetary atmospheres are obtained in a linear approximation and under assumptions of small dissipation parameters. Turbulent dissipation is examined in detail, taking into account the anisotropy of atmospheric turbulence and the dissipation effect of turbulent eddies with the linear and time scales being less than an AGW wavelength and period. The role of radiative heat exchange in AGW attenuation is reexamined since the addition of molecular dissipation to turbulent dissipation reduces the relative role of radiation. For particular cases of AGW, a numerical analysis is presented of wave attenuation times in the atmospheres of the earth, Mars, and Venus.
Gavrilov Nikolai M.
Shved Gustav M.
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