Gravity wave excitation through resonant interaction in a compressible atmosphere
Gravity wave excitation through resonant interaction in a compressible atmosphere
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可压缩大气中通过共振相互作用激发重力波
DOI：
10.1029/2008gl035575
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发表时间：
2009-01
影响因子：
5.2
通讯作者：
Huang, Kai Ming
中科院分区：
文献类型：
--
作者：
Yi, Fan;Zhang, Shao Dong;Huang, Kai Ming
从一组完全非线性方程出发，清晰地展示了和共振条件下通过共振相互作用激发引力波的整个过程。在整个相互作用过程中，激发波的波长和频率与谐振条件的和值一致。激发波的能量增长主要来自于原波。此外，相互作用中强烈的能量交换表明，非线性相互作用可能在确定大气波谱和向更高高度输送动量方面发挥重要作用。讨论了共振相互作用和非共振相互作用，并提出了相互作用的失谐度，该失谐度可用于测量引力波非线性相互作用中是否发生有效能量交换。
Starting from a set of fully nonlinear equations, the whole process of a gravity wave excited through resonant interaction under sum resonant conditions is clearly exhibited. In the whole interaction, the wavelength and frequency of the excited wave are in agreement with the values derived from the sum resonant conditions. And the energy growth of the excited wave is mainly from the primary wave. Moreover, strong energy exchange in the interaction shows that the nonlinear interaction may play a significant role in determining the atmospheric wave spectrum and transporting the momentum to higher altitudes. A discussion on the resonant and nonresonant interactions is also presented, and the detuning degree of interaction is proposed, which may be applied to measure whether or not the effective energy exchange occurs in the nonlinear interactions of gravity waves.
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影响因子：
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