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Hydrodynamic modelling of a polluted tropical bay: Assessment of anthropogenic impacts on freshwater runoff and estuarine water renewal

2019-04Journal article Restricted access
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dc.contributor.authorTosic, Marko
dc.contributor.authorMartins, Flávio
dc.contributor.authorLonin, Serguei
dc.contributor.authorIzquierdo, Alfredo
dc.contributor.authorDario Restrepo, Juan
dc.date.accessioned2020-07-24T10:52:29Z
dc.date.available2020-07-24T10:52:29Z
dc.date.issued2019-04
dc.description.abstractA bay's capacity to buffer fluvial fluxes between the land and sea is sensitive to hydrological changes that can affect its water renewal rates. In Cartagena Bay, Colombia, pollution issues have been associated with freshwater fluxes which are projected to increase in future years. This has led to plans to reduce freshwater flows by constructing upstream hydraulic doors. Given the influence of freshwater discharge on coastal water renewal, it is important to assess how these upstream changes will affect the bay's hydrodynamic processes. This study calibrated the 3D MOHID Water model, configured with a high-resolution mixed vertical discretization to capture the bay's characteristic processes of vertical stratification and mixing. A Lagrangian transport model was used to analyze the flow of passive particle tracers and calculate water renewal time scales. Mean residence times of 3-6 days and flushing times of 10-20 days for canal water were found, while mean residence times of 23-33 days and flushing times of 70-99 days were calculated for the bay's complete water volume. An assessment of future scenarios showed that increases in freshwater runoff would result in faster water renewal in the bay, while plans to decrease freshwater discharge would result in slower water renewal in the bay. It is therefore imperative that any plans for reducing fluvial fluxes into the bay be accompanied by the control of local pollution sources, which are abundant and could worsen the bay's water quality issues should water renewal times become longer.
dc.description.sponsorshipInternational Development Research Centre, Ottawa, Canada [108747-001]
dc.description.sponsorshipEAFIT University
dc.description.sponsorshipCorporacion Autonoma Regional del Canal del Dique (CARDIQUE) [15601]
dc.description.sponsorshipErasmus Mundus Doctoral Programme in Marine and Coastal Management (MACOMA)
dc.description.sponsorshipFundacion Hernan Echavarria Olozoga
dc.description.sponsorshipEscuela Naval de Cadetes "Almirante Padilla"
dc.description.sponsorshipUniversity of Wyoming's surface observation service
dc.description.sponsorshipU. Lisboa's Marine Environment Technology Center (MARETEC)
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1016/j.jenvman.2019.01.104
dc.identifier.issn0301-4797
dc.identifier.issn1095-8630
dc.identifier.urihttp://hdl.handle.net/10400.1/14366
dc.language.isoeng
dc.peerreviewedyes
dc.publisherAcademic Press Ltd- Elsevier Science Ltd
dc.subjectCartagena Bay
dc.subjectMagdalena River
dc.subjectResidence time
dc.subjectCoastal waters
dc.subjectTotal mercury
dc.subjectSea
dc.subjectQuality
dc.subjectNorth
dc.subjectFish
dc.subjectEutrophication
dc.titleHydrodynamic modelling of a polluted tropical bay: Assessment of anthropogenic impacts on freshwater runoff and estuarine water renewal
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage714
oaire.citation.startPage695
oaire.citation.titleJournal of Environmental Management
oaire.citation.volume236
person.familyNameTosic
person.familyNameMartins
person.givenNameMarko
person.givenNameFlávio
person.identifier.ciencia-id4C1A-BD2C-29E0
person.identifier.ciencia-id6711-E990-FFD9
person.identifier.orcid0000-0002-4313-2412
person.identifier.orcid0000-0002-9863-6255
person.identifier.ridU-2673-2018
person.identifier.scopus-author-id57192653350
person.identifier.scopus-author-id7006504350
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicationea4b2d87-bc69-48a7-a19b-a3a029881a5c
relation.isAuthorOfPublication1a3bc5b3-6032-43b3-880e-1a551ba84d02
relation.isAuthorOfPublication.latestForDiscoveryea4b2d87-bc69-48a7-a19b-a3a029881a5c

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