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arXiv 2107.04818physics.ao-phphysics.geo-ph
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Coriolis force对大气中声-重力波非线性相互作用的影响

Effects of Coriolis force on the nonlinear interactions of acoustic-gravity waves in the atmosphere

Debjani Chatterjee, A. P. Misra

摘要:

考虑科里奥利力的影响,重新讨论了大气中声-重力波的非线性理论。以前的理论在文献[物理。\textbf{90}(2015)055001]为高级。从一组经科里奥利力修正的流体方程出发,导出了反映高频声重力波(AGW)和低频重力内波(IGW)耦合的一般线性频散关系。IGW的频率被地球的角速度增强。后者也显着修改的非线性耦合的AGW和IGW的演化所描述的Zakharov方法以及Wigner-Moyal形式主义。简要地讨论了AGW和两个等效的演化方程修改的科里奥利力的后果。

英文摘要:

The nonlinear theory of acoustic-gravity waves (AGWs) in the atmosphere is revisited with the effects of the Coriolis force. Previous theory in the literature [Phys. Scr. \textbf{90} (2015) 055001] is advanced. Starting from a set of fluid equations modified by the Coriolis force, a general linear dispersion relation is derived which manifests the coupling of the high-frequency acoustic-gravity waves (AGWs) and the low-frequency internal gravity waves (IGWs). The frequency of IGWs is enhanced by the Earth's angular velocity. The latter also significantly modifies the nonlinear coupling of AGWs and IGWs whose evolutions are described by the Zakharov approach as well as the Wigner-Moyal formalism. The consequences of AGWs and the two equivalent evolution equations modified by the Coriolis force are briefly discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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