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首页> 外文期刊>Journal of oceanography >Detection of nonlinear waves and their contribution to ocean wave spectra Part II: Observation
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Detection of nonlinear waves and their contribution to ocean wave spectra Part II: Observation

机译:非线性波的检测及其对海浪谱的贡献第二部分:观测

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This is a Part II of a paper of nonlinearities of wind waves in the deep open ocean. As shown in Part I, bound waves in deep sea are detectable by extracting secondorder Doppler spectra from the Doppler spectra of HF (high-frequency) radio waves scattered from the sea surface. There is a remarkable agreement between the calculated and measured Doppler spectra, considering the noise levels in measured Doppler spectra and the uncertainties in directional properties. The theoretical expression for bound waves is thus verified. Furthermore, the upper limit in calculating the Doppler spectra for the second-order approximation is presented from field observations, although we cannot conclude that it is equivalent to the limitation of the second-order bound wave theory. It is shown that analysis of radio wave scattering by the sea surface is one useful means of understanding the nonlinear properties of ocean waves.
机译:这是深海中风波非线性的论文的第二部分。如第一部分所示,可以通过从海面散射的HF(高频)无线电波的多普勒频谱中提取二阶多普勒频谱来检测深海中的束缚波。考虑到测得的多普勒频谱中的噪声水平和方向性的不确定性,在计算出的多普勒频谱和测量出的多普勒频谱之间存在显着的一致性。由此验证了束缚波的理论表达式。此外,尽管不能得出结论,它等同于二阶束缚波理论的局限性,但从现场观察中可以得出计算二阶近似的多普勒频谱的上限。结果表明,分析海面的无线电波散射是了解海浪非线性特性的一种有用手段。

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