Abstract The characteristics of an evolving ocean surface wavefield under tropical cyclone Hudhud that took place in October 2014 are investigated. The Hilbert-Huang transformation (HHT) is used for the spectral analysis of the cyclone generated waves. Empirical mode decomposition (EMD) is used to decompose the wave data into different intrinsic mode function (IMF). Hilbert Marginal Spectra and the Fourier Spectra for the wavefield data and the corresponding IMF are compared. In addition to the frequency wave elevation spectrum, the wave group characteristics and their relationship with the local wave characteristics are studied.

中文翻译：

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热带气旋Hudhud下表面波场的Hilbert-Huang变换分析

摘要 研究了 2014 年 10 月发生的热带气旋 Hudhud 作用下一个不断演变的海面波场特征。Hilbert-Huang 变换 (HHT) 用于对旋风产生的波进行光谱分析。经验模态分解（EMD）用于将波浪数据分解为不同的本征模态函数（IMF）。比较了波场数据的希尔伯特边缘谱和傅立叶谱以及相应的 IMF。除了频率波高程谱外，还研究了波群特征及其与当地波特征的关系。