Hilbert-Huang transform analysis of surface wavefield under tropical cyclone Hudhud
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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.
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