Coherence between infragravity waves and ambient water motions over cape-associated shoals

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dc.citation.journalTitleContinental Shelf Research
dc.contributor.authorPaniagua-Arroyave J.F.spa
dc.contributor.authorValle-Levinson A.spa
dc.contributor.authorAdams P.N.spa
dc.contributor.authorParra S.M.spa
dc.contributor.departmentUniversidad EAFIT. Departamento de Geologíaspa
dc.contributor.researchgroupCiencias del Marspa
dc.date.accessioned2021-03-23T20:21:15Z
dc.date.available2021-03-23T20:21:15Z
dc.date.issued2019-01-01
dc.description.abstractCross-shelf water motions influence fluxes of nutrients, larvae and sediments, which in turn affect nearshore morphodynamics. Among these motions are infragravity waves, which typically exhibit periodicities from 20 to 200 s, and originate from multiple sources including the superposition of incident wave fields. To examine how infragravity waves co-vary with water motions in an area of complex bathymetry, we analyzed measurements from acoustic Doppler current profilers around cape-associated shoals near Cape Canaveral, on the Florida (USA) Atlantic coast. Observations of water motions and infragravity wave heights at the outer and inner swales of two isolated shoals (Shoal E and Shoal D), located approximately 15 km offshore in ~ 14 m water depth, were subjected to squared coherency and wavelet coherence analyses. Coherences between infragravity wave heights and flow conditions were unsteady, i.e. variable over time, and exhibited differences between outer and inner swales. Subtidal flows (periods > 0.5 days) were sporadically coherent with the total and bound infragravity wave heights at both inner and outer swales. Tidal flows (~ 2 cycles/day) were coherent with the total infragravity wave heights only at outer swale locations. These results indicate that tidal motions may modulate the generation of free (directed both oppositely to and in the direction of short-wave propagation) infragravity waves by short-wave groups shoaling and by refractive trapping at shoals. Subtidal flows, on the other hand, may influence triad interactions that generate infragravity motions. © 2018 Elsevier Ltdeng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=8520
dc.identifier.doi10.1016/j.csr.2018.12.003
dc.identifier.issn02784343
dc.identifier.issn18736955
dc.identifier.otherWOS;000457662100003
dc.identifier.otherSCOPUS;2-s2.0-85058697914
dc.identifier.urihttp://hdl.handle.net/10784/26934
dc.language.isoengeng
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85058697914&doi=10.1016%2fj.csr.2018.12.003&partnerID=40&md5=df984876e39bf28e30d0715e678b4506
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0278-4343
dc.sourceContinental Shelf Research
dc.subject.keywordgravity waveeng
dc.subject.keywordshoaling waveeng
dc.subject.keywordsubtidal environmenteng
dc.subject.keywordtideeng
dc.subject.keywordwave fieldeng
dc.subject.keywordwave generationeng
dc.subject.keywordwave propagationeng
dc.subject.keywordAtlantic Coast [North America]eng
dc.subject.keywordAtlantic Coast [United States]eng
dc.subject.keywordAtlantic Oceaneng
dc.subject.keywordCape Canaveraleng
dc.subject.keywordFlorida Currenteng
dc.subject.keywordFlorida [United States]eng
dc.subject.keywordUnited Stateseng
dc.titleCoherence between infragravity waves and ambient water motions over cape-associated shoalseng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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