Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/13218
Full metadata record
DC FieldValueLanguage
dc.contributor.authorVaz, N.pt
dc.contributor.authorLeitao, P. C.pt
dc.contributor.authorDias, J. M.pt
dc.date.accessioned2015-01-20T17:22:31Z-
dc.date.issued2007-
dc.identifier.issn0749-0208pt
dc.identifier.urihttp://hdl.handle.net/10773/13218-
dc.description.abstractA 3D baroclinic model (Mohid) was used to perform hindcast simulations in a tidal channel – Espinheiro Channel (located within Ria de Aveiro, north coast of Portugal) – in order to study its hydrography. The simulations were conducted for four distinct periods where markedly different river discharge and tides occurred and the outputs are compared with synoptic thermohaline data. The model qualitatively reproduces alongchannel thermohaline distributions at three different vertical levels during low-to-medium river inflow, underestimating the salinity stratification under high river inflow (higher than 100 m3 s -1). Once the numerical model is fully implemented, the hydrography of the channel was analysed in terms of two main forcing factors: river discharge and tide. Tidal currents and thermohaline data were analysed at the channel’s inlet and at a mid channel station during two tidal cycles. The stratification and water column stability were found to vary in these stations as a function of the estuarine Richardson number and the buoyancy frequency. Well mixed conditions were found at the lower and mid channel area when the river flow is weak (independently of the tidal regime), turning to highly stratified when the river flow is very high (during neap tide). The residual currents were also analysed revealing an ebb-dominated channel, with a more intense seaward current near the surface due to the freshwater inflow.pt
dc.language.isoengpt
dc.publisherCoastal Education and Research Foundationpt
dc.rightsrestrictedAccesspor
dc.subjectHydrographypt
dc.subjectBaroclinic modelpt
dc.subjectEstuarine stratificationpt
dc.subjectVertical mixingpt
dc.titleChannel-ocean exchange driven by tides and river flow: Espinheiro Channel (Portugal)pt
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
ua.event.titleJournal of Coastal Research
degois.publication.firstPage1000pt
degois.publication.lastPage1004pt
degois.publication.titleJournal of Coastal Researchpt
degois.publication.volumeSI 50pt
dc.date.embargo10000-01-01-
dc.relation.publisherversionhttp://www.jcronline.org/pt
Appears in Collections:CESAM - Artigos
Ria de Aveiro - Artigos

Files in This Item:
File Description SizeFormat 
Channel-ocean exchange driven by tides and river flow_ Espinheiro Channel Portugal.pdf465.18 kBAdobe PDFrestrictedAccess


FacebookTwitterLinkedIn
Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.