Development of Freak Swell Wave in a Weak Wave Field

Shurgalina E., Pelinovsky E.

Interference of unidirectional swell and wind waves in deep water in frameworks of linear potential theory is ‎considered. Wind waves are described by Pierson–Moskowitz spectrum, and swell – by the frequency-‎modulated wave packet. It is noticed that in case of a variable wind in a storm area the swell waves can be ‎focused on some distance from the origin area, forming abnormal big waves («freak waves»). A visibility of ‎the freak wave swell of different shapes in wind wave field is examined.‎

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