Observed Features of Acoustic Gravity Waves in the
Heterosphere

A. K. Fedorenko and E. I. Kryuchkov

Space Research Institute of NASU and SSAU, Kiev, Ukraine

e-mail: aurora28@i.ua, john_k@i.ua

Received June 13, 2012; in final form, December 6, 2012

Abstract—According to measurements on the Dynamic Explorer 2 satellite, features of the propagation of
acoustic gravity waves (AGWs) in the multicomponent upper atmosphere have been investigated. In the altitude
range 250–400 km in wave concentration variations of some atmospheric gases, amplitude and phase differ-
ences have been observed. Using the approach proposed in this paper, in different gases, AGW variations have
been divided into components associated with elastic compression, adiabatic expansion, and the vertical back-
ground distribution. The amplitude and phase differences observed in different gases are explained on the basis
of analyzing these components. It is shown how to use this effect in order to determine the wave propagation,
the vertical displacement of the volume element, the wave frequency, and the spatial distribution of the wave
energy density.

DOI: 10.1134/S0016793214010022

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