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dc.contributor.authorGrifoll, Manel
dc.contributor.authorJorda, Gabriel
dc.contributor.authorEspino, Manuel
dc.date.accessioned2017-10-23T11:15:28Z-
dc.date.available2017-10-23T11:15:28Z-
dc.date.issued2014
dc.identifierISI:000337854800007
dc.identifier.citationJOURNAL OF SEA RESEARCH, 2014, 90, 54-63
dc.identifier.issn1385-1101
dc.identifier.urihttp://dspace.azti.es/handle/24689/343-
dc.description.abstractWater renewal and mixing are highly related to the evolution of the ecological status in harbour areas and are crucial for environmental harbour management. For the first time, these processes have been studied in the Barcelona harbour with a high resolution 3D hydrodynamic model. This harbour is representative of a semi-enclosed domain with a complex coastline in a micro-tidal environment (like most Mediterranean harbours). The tracking of numerical Lagrangian particles deployed in the flow was used to parameterize the surface water renewal mechanisms. The use of Finite Size Lyapunov Exponents has proven to be a relatively easy and efficient way to characterize the mixing patterns. The complex geometry of the harbour and the meteo-oceanographic forcings lead to intricate hydrodynamics that define spatial heterogeneity of water renewal and mixing. The most favourable conditions for enhancing surface water renewal and mixing have been identified in idealized scenarios and realistic simulations. In general, renewal is enhanced near the harbour mouths and strongly limited in the inner areas. However, under particular forcing conditions, the residence time can decrease even in the most sheltered areas. The presence of two mouths in the harbour seems to favour water renewal in comparison to harbours with only one mouth. Mixing is mainly induced by the action of wind forcing, while external shelf currents are much less efficient. The study of two realistic simulations suggests that harbour response to real forcing cannot be deduced from the combination of simple idealized scenarios. The time evolution of the forcings and the transient response of the system play a key role in defining the residence time patterns. (C) 2014 Elsevier By. All rights reserved.
dc.description.sponsorshipWe acknowledge the Barcelona Harbour Authority for the wind and water currents data provided and the Spanish Harbour Agency (www.puertos.es). Also, we thank Luis Ferrer (Azti-Tecnalia), Rafael Madrigal (UM, UPC) and Marc Mestres (LIM, UK) for their comments and suggestions. M. Grifoll is supported by a research grant, from the Fundacion Centros Tecnologicos, Inaki Goenaga, and financially complemented by Civil Engineering College (Col.legi d'Enginyers de Camins, Canals i Ports de Catalunya, www.camins.cat). G. Jorda acknowledges a JAE-DOC contract funded by the Spanish Research Council (CSIC) and the European Science Foundation (ESF).
dc.language.isoeng
dc.publisherELSEVIER SCIENCE BV
dc.subjectWater renewal
dc.subjectResidence time
dc.subjectMixing
dc.subjectLyapunov exponents
dc.subjectLagrangian particle tracking method
dc.subjectBarcelona harbour
dc.subjectTRANSPORT TIME SCALES
dc.subjectRESIDENCE TIME
dc.subjectMEDITERRANEAN SEA
dc.subjectMODEL
dc.subjectCIRCULATION
dc.subjectSEDIMENTS
dc.subjectLAGOON
dc.subjectSPAIN
dc.subjectBAY
dc.subjectESTUARIES
dc.titleSurface water renewal and mixing mechanisms in a semi-enclosed microtidal domain. The Barcelona harbour case
dc.typeArticle
dc.identifier.journalJOURNAL OF SEA RESEARCH
dc.format.page54-63
dc.format.volume90
dc.contributor.funderFundacion Centros Tecnologicos, Inaki Goenaga
dc.contributor.funderCivil Engineering College
dc.contributor.funderSpanish Research Council (CSIC)
dc.contributor.funderEuropean Science Foundation (ESF)
dc.identifier.e-issn1873-1414
dc.identifier.doi10.1016/j.seares.2014.02.007
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