Acoustic–gravity waves and their role in ionosphere–lower thermosphere coupling
Gordana Jovanovic
Abstract:Abstract. The properties of acoustic–gravity waves (AGWs) in the ionospheric D layer and their role in the D layer–lower thermosphere coupling are studied using the dispersion equation and the reflection coefficient. These analytical equations are an elegant tool for evaluating the contribution of upward–propagating acoustic and gravity waves to the dynamics of the lower thermosphere. It was found that infrasound waves with frequencies ω > 0.035 s−1, which propagate almost vertically, can reach the lower th… Show more
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