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Trapping and instability of directional gravity waves in localized water currents

dc.contributor.authorEliasson, Bengtpt_BR
dc.contributor.authorHaas, Fernandopt_BR
dc.date.accessioned2014-09-24T02:13:17Zpt_BR
dc.date.issued2014pt_BR
dc.identifier.issn1539-3755pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/103762pt_BR
dc.description.abstractThe influence of localizedwater currents on the nonlinear dynamics and stability of large amplitude, statistically distributed gravity waves is investigated theoretically and numerically by means of an evolution equation for a Wigner function governing the spectrum of waves. It is shown that water waves propagating in the opposite direction of a localized current channel can be trapped in the channel, which can lead to the amplification of the wave intensity. Under certain conditions the wave intensity can be further localized due to a self-focusing (Benjamin-Feir) instability. The localized amplification of the wave intensity may increase the probability of extreme events in the form of freak waves, which have been observed in connection with ocean currents.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. E, Statistical, nonlinear, and soft matter physics. Vol. 89, no. 6 (June 2014), 063014, 7 p.pt_BR
dc.rightsOpen Accessen
dc.subjectOndas gravitacionaispt_BR
dc.subjectÁguapt_BR
dc.subjectAnálise numéricapt_BR
dc.subjectAnálise estatísticapt_BR
dc.subjectInstabilidade de escoamentopt_BR
dc.titleTrapping and instability of directional gravity waves in localized water currentspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000922322pt_BR
dc.type.originEstrangeiropt_BR


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