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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >SATURATED-CASCADE SIMILITUDE THEORY OF GRAVITY WAVE SPECTRA
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SATURATED-CASCADE SIMILITUDE THEORY OF GRAVITY WAVE SPECTRA

机译：重力波谱的饱和级联模拟理论

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A theory is presented, which is based mainly on dimensional analysis (but also on gravity wave theory), that attempts to explain all the types of gravity wave power spectral densities (PSDs) now being measured. This theory is based on two concepts, namely, wave saturation and wave cascade. The immediate result of the simultaneous presence of these two processes is that there should exist a unique relation between the vertical (or horizontal) wavelength of a gravity wave and its period (provided the Brunt Period and dissipation rate are given and Doppler effects are omitted). This relation provides a way to derive all of the intrinsic spectra from the fundamental one which is the vertical wavenumber PSD of the horizontal winds. The most important suggestion to emerge from this theory is that epsilon, the dissipation rate, is the main controlling independent variable for the amplitude of all but 3 of the 12 spectra predicted. It would also control the wavelength-period relations. Comparisons are made between observations and theory, and important experimental tests are proposed. This model presently appears to be useful in the analysis of gravity wave data obtained by means of lidars, radars, interferometers, and imagers. In addition, it raises a number of new scientific issues for future research. [References: 92]
机译：提出了一种理论，该理论主要基于尺寸分析（但也基于重力波理论），试图解释目前正在测量的所有重力波功率谱密度（PSDs）类型。该理论基于两个概念，即波饱和和波级联。这两个过程同时存在的直接结果是，重力波的垂直（或水平）波长与其周期之间应该存在唯一关系（前提是给出了布伦特周期和耗散率，而忽略了多普勒效应） 。这种关系提供了一种从基波推导所有固有光谱的方法，该基波是水平风的垂直波数PSD。从该理论中得出的最重要的建议是，ε（耗散率）是预测的12个光谱中除3个光谱之外的所有光谱的振幅的主要控制自变量。它还将控制波长-周期关系。比较观察和理论，并提出重要的实验测试。该模型目前看来可用于分析借助激光雷达，雷达，干涉仪和成像仪获得的重力波数据。此外，它为未来的研究提出了许多新的科学问题。 [参考：92]

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