Articles | Volume 23, issue 5
Nonlin. Processes Geophys., 23, 341–359, 2016
Nonlin. Processes Geophys., 23, 341–359, 2016

Research article 16 Sep 2016

Research article | 16 Sep 2016

Localized coherence of freak waves

Arnida L. Latifah and E. van Groesen

Related subject area

Subject: Nonlinear Waves, Pattern Formation, Turbulence | Topic: Climate, atmosphere, ocean, hydrology, cryosphere, biosphere
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Cited articles

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Cherneva, Z. and Guedes Soares, C.: Time–frequency analysis of the sea state with the Andrea freak wave, Nat. Hazards Earth Syst. Sci., 14, 3143–3150,, 2014.
Short summary
This paper showed the relevance of phase coherence by illustrations of signals with increasingly less restrictions on the phase function. Then the wavelet transform was used to determined the time–frequency spectrum of a time signal. We used the wavelet transform to identify critical group events of the influx signal and it is shown that the group event with the largest local energy signal is the most probable group to generate a freak wave. It gives a local mechanism of a freak wave appearance.