On Kurtosis and Occurrence Probability of Freak Waves
نویسندگان
چکیده
منابع مشابه
Why SAR wave mode data of ERS and Envisat are inadequate for giving the probability of occurrence of freak waves
It would be highly desirable to have a global monitoring tool for the detection of freak or rogue ocean surface waves. Based on the SAR imaging theory of ocean surface waves developed already in the 1980's, it is argued that unfortunately, despite recent claims to the contrary, this is not possible using SAR wave mode data of the ERS and Envisat satellites. The main reason for this is that, due...
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Abstract. This paper investigates in detail a possible mechanism of energy convergence leading to freak waves. We give examples of a freak wave as a (weak) pseudo-maximal wave to illustrate the importance of phase coherence. Given a time signal at a certain position, we identify parts of the time signal with successive high amplitudes, so-called group events, that may lead to a freak wave using...
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Four-wave interactions play an important role in the evolution of the spectrum of surface gravity waves. This follows from direct simulations of an ensemble of ocean waves using the Zakharov equation. The theory of homogeneous four-wave interactions, extended to include effects of nonresonant transfer, compares favourably with the ensemble averaged results of the Monte Carlo simulations. In par...
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When deep-water surface gravity waves traverse an area with a curved or otherwise variable current, the current can act analogously to an optical lens, to focus wave action into a caustic region. In this region, waves of surprisingly large size, alternatively called freak, rogue, or giant waves are produced. We show how this mechanism produces freak waves at random locations when ocean swell tr...
متن کاملAuthor’s Response Localized Coherence of Freak Waves
We thank the anonymous referee #1 for the positive and constructive remarks. Just like the referee, we struggled to improve and simplify the presentation of the technical results. In section 2 we tried to illustrate in a simple way the role of coherence by considering the (weak) pseudomaximal signals. Then, to justify the use of the wavelet transform, we showed how the coherence of phase inform...
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ژورنال
عنوان ژورنال: Journal of Physical Oceanography
سال: 2006
ISSN: 1520-0485,0022-3670
DOI: 10.1175/jpo2922.1