Wave-turbulence spectra in a polytropic atmosphere

Details Wave-turbulence spectra in a polytropic atmosphere Wave-turbulence spectra in a polytropic atmosphere

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pazh....9..445p&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 9, July-Aug. 1983, p. 445-448) Soviet Astronomy Letters (ISSN 0360-0327), vol. 9, July-

Computer Science

Sound

Atmospheric Turbulence, Energy Spectra, Gravity Waves, Polytropic Processes, Sound Waves, Stellar Atmospheres, Approximation, Planetary Atmospheres

Scientific paper

Weak-turbulence spectra for acoustic-gravity waves in a polytropic atmosphere are derived. It is shown that the sole dimensional parameter controlling the wave process is the free-fall acceleration. The forms of the spatial spectrum and the frequency spectrum of the turbulence, encompassing all the acoustic-gravity wave modes in a polytropic atmosphere, are derived, and it is shown that saturated spectra are described by the same expressions for acoustic-gravity waves in a polytropic atmosphere as for waves in water. Finally, the level of wave-turbulence energy in stellar atmospheres is estimated.

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