Properties of the Lowest Oscillation Mode
of a Nonisothermal Atmosphere

O. N. Savina

Nizhnii Novgorod State Engineering University, Nizhnii Novgorod, Russia

Received October 16, 1995

Abstract—A model problem of finding the lowest oscillation mode corresponding to a high-frequency branch
of acoustic-gravity waves is considered. An exact solution that describes the height profile of the vertical veloc
ity of the atmosphere is obtained for an analytically specified model height profile of atmospheric temperature.
An expression for the acoustic cutoff frequency _A is determined. The effect of nonlinear dissipation of verti
cally propagating waves on this frequency is discussed.

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