On the shape and likelihood of oceanic rogue waves

Abstract We consider the observation and analysis of oceanic rogue waves collected within spatio-temporal (ST) records of 3D wave fields. This class of records, allowing a sea surface region to be retrieved, is appropriate for the observation of rogue waves, which come up as a random phenomenon that...

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Autores principales:	Alvise Benetazzo, Fabrice Ardhuin, Filippo Bergamasco, Luigi Cavaleri, Pedro Veras Guimarães, Michael Schwendeman, Mauro Sclavo, Jim Thomson, Andrea Torsello
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/20f7261b11ca49a78ab8d4c04565ecda
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spelling	oai:doaj.org-article:20f7261b11ca49a78ab8d4c04565ecda2021-12-02T12:32:26ZOn the shape and likelihood of oceanic rogue waves10.1038/s41598-017-07704-92045-2322https://doaj.org/article/20f7261b11ca49a78ab8d4c04565ecda2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07704-9https://doaj.org/toc/2045-2322Abstract We consider the observation and analysis of oceanic rogue waves collected within spatio-temporal (ST) records of 3D wave fields. This class of records, allowing a sea surface region to be retrieved, is appropriate for the observation of rogue waves, which come up as a random phenomenon that can occur at any time and location of the sea surface. To verify this aspect, we used three stereo wave imaging systems to gather ST records of the sea surface elevation, which were collected in different sea conditions. The wave with the ST maximum elevation (happening to be larger than the rogue threshold 1.25H s) was then isolated within each record, along with its temporal profile. The rogue waves show similar profiles, in agreement with the theory of extreme wave groups. We analyze the rogue wave probability of occurrence, also in the context of ST extreme value distributions, and we conclude that rogue waves are more likely than previously reported; the key point is coming across them, in space as well as in time. The dependence of the rogue wave profile and likelihood on the sea state conditions is also investigated. Results may prove useful in predicting extreme wave occurrence probability and strength during oceanic storms.Alvise BenetazzoFabrice ArdhuinFilippo BergamascoLuigi CavaleriPedro Veras GuimarãesMichael SchwendemanMauro SclavoJim ThomsonAndrea TorselloNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alvise Benetazzo Fabrice Ardhuin Filippo Bergamasco Luigi Cavaleri Pedro Veras Guimarães Michael Schwendeman Mauro Sclavo Jim Thomson Andrea Torsello On the shape and likelihood of oceanic rogue waves
description	Abstract We consider the observation and analysis of oceanic rogue waves collected within spatio-temporal (ST) records of 3D wave fields. This class of records, allowing a sea surface region to be retrieved, is appropriate for the observation of rogue waves, which come up as a random phenomenon that can occur at any time and location of the sea surface. To verify this aspect, we used three stereo wave imaging systems to gather ST records of the sea surface elevation, which were collected in different sea conditions. The wave with the ST maximum elevation (happening to be larger than the rogue threshold 1.25H s) was then isolated within each record, along with its temporal profile. The rogue waves show similar profiles, in agreement with the theory of extreme wave groups. We analyze the rogue wave probability of occurrence, also in the context of ST extreme value distributions, and we conclude that rogue waves are more likely than previously reported; the key point is coming across them, in space as well as in time. The dependence of the rogue wave profile and likelihood on the sea state conditions is also investigated. Results may prove useful in predicting extreme wave occurrence probability and strength during oceanic storms.
format	article
author	Alvise Benetazzo Fabrice Ardhuin Filippo Bergamasco Luigi Cavaleri Pedro Veras Guimarães Michael Schwendeman Mauro Sclavo Jim Thomson Andrea Torsello
author_facet	Alvise Benetazzo Fabrice Ardhuin Filippo Bergamasco Luigi Cavaleri Pedro Veras Guimarães Michael Schwendeman Mauro Sclavo Jim Thomson Andrea Torsello
author_sort	Alvise Benetazzo
title	On the shape and likelihood of oceanic rogue waves
title_short	On the shape and likelihood of oceanic rogue waves
title_full	On the shape and likelihood of oceanic rogue waves
title_fullStr	On the shape and likelihood of oceanic rogue waves
title_full_unstemmed	On the shape and likelihood of oceanic rogue waves
title_sort	on the shape and likelihood of oceanic rogue waves
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/20f7261b11ca49a78ab8d4c04565ecda
work_keys_str_mv	AT alvisebenetazzo ontheshapeandlikelihoodofoceanicroguewaves AT fabriceardhuin ontheshapeandlikelihoodofoceanicroguewaves AT filippobergamasco ontheshapeandlikelihoodofoceanicroguewaves AT luigicavaleri ontheshapeandlikelihoodofoceanicroguewaves AT pedroverasguimaraes ontheshapeandlikelihoodofoceanicroguewaves AT michaelschwendeman ontheshapeandlikelihoodofoceanicroguewaves AT maurosclavo ontheshapeandlikelihoodofoceanicroguewaves AT jimthomson ontheshapeandlikelihoodofoceanicroguewaves AT andreatorsello ontheshapeandlikelihoodofoceanicroguewaves
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On the shape and likelihood of oceanic rogue waves

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