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本文应用一种具有局域保真性的组成波分解方法（子波变换），对实测风浪波面进行分析。结果表明：风浪不同组成波的相位之间，彼此的耦合远强于各自随机特征，组成波的相位不是相互独立的随机变量；风浪平衡域内的高频组成波表现为不规则的间歇性波动，而不是平面波；通过一个简化动力学模式证明，造成上述间歇性的成因是无时不存在的低频海水运动；由此得到结论，实测风浪频谱具有易变性。
In this paper, a component wave decomposition method with local fidelity (wavelet transform) is applied to analyze the measured wind and wave wave surface. The results show that the phases of wind waves and waves of different components are far more coupled than each other, and the phases of the components are not independent random variables. The high frequency component wave in the wind-wave balance region shows irregular intermittent fluctuations, Instead of the plane wave. It is proved by a simplified kinetic model that the above-mentioned intermittent causes are the non-existent low-frequency sea-water movement. It is concluded that the measured wind-wave spectrum is volatile.