Guiding properties of a non-isothermal atmosphere for acoustic-gravity waves

Canella, L. and Costantini, B. and Nalesso, G. and Jacobson, A. R. (1998) Guiding properties of a non-isothermal atmosphere for acoustic-gravity waves. Il nuovo cimento C, 21 C (1). pp. 1-22. ISSN 1826-9885

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The propagation of pressure waves in a stratified, non-isothermal atmosphere is studied in the linear approximation. It is found that acoustic and acoustic-gravity waves can be horizontally guided by the effect of the Earth’s thermocline alone, under very mild conditions on the temperature gradient steepness. The effect of the Earth’s surface is also studied. Lamb’s modes associated with the rigid surface are, then, identified and their behaviour, as a function of the Earth’s position, is discussed. Finally, dissipation is included, and its effect is derived using a perturbation technique.

Item Type: Article
Uncontrolled Keywords: Tides, waves, and winds
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia > 551.5 Meteorologia (Classificare qui l'atmosfera) (Classificare la previsione e le previsioni di specifici fenomeni meteorologici in 551.64; classificare la Micrometeorologia in 551.66) > 551.51 Composizione, zone, dinamica dell'atmosfera > 551.518 Vento > 551.5187 Venti dell'alta atmosfera
Depositing User: Marina Spanti
Date Deposited: 09 Feb 2018 14:20
Last Modified: 09 Feb 2018 14:20

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