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Temporal variability of lagoon–sea water exchange and seawater circulation through a Mediterranean barrier beach

dc.rights.licenseopenen_US
hal.structure.identifierLaboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
dc.contributor.authorTAMBORSKI, Joseph
hal.structure.identifierLaboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
dc.contributor.authorBEEK, Pieter
hal.structure.identifierCentre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement [CEREGE]
dc.contributor.authorRODELLAS, Valenti
hal.structure.identifierGéosciences Environnement Toulouse [GET]
dc.contributor.authorMONNIN, Christophe
hal.structure.identifierLaboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
dc.contributor.authorBERGSMA, Erwin
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorANSCHUTZ, Pierre
ORCID: 0000-0001-5331-7974
IDREF: 076300331
hal.structure.identifierCentre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement [CEREGE]
hal.structure.identifierCentre for Tropical Water and Aquatic Ecosystem Research [TropWATER]
dc.contributor.authorSTIEGLITZ, Thomas
hal.structure.identifierStony Brook University [SUNY] [SBU]
dc.contributor.authorHEILBRUN, Christina
hal.structure.identifierStony Brook University [SUNY] [SBU]
dc.contributor.authorCOCHRAN, J. Kirk
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCHARBONNIER, Celine
hal.structure.identifierLaboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
dc.contributor.authorBEJANNIN, Simon
hal.structure.identifierHelmholtz Centre for Ocean Research [Kiel] [GEOMAR]
dc.contributor.authorBECK, Aaron
dc.date.accessioned2024-01-24T10:18:56Z
dc.date.available2024-01-24T10:18:56Z
dc.date.issued2019
dc.identifier.issn0024-3590en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/187472
dc.description.abstractEnThe subterranean flow of water through sand barriers between coastal lagoons and the sea, driven by a positive hydraulic gradient, is a net new pathway for solute transfer to the sea. On the sea side of sand barriers, seawater circulation in the swash‐zone generates a flux of recycled and new solutes. The significance and temporal variability of these vectors to the French Mediterranean Sea is unknown, despite lagoons constituting ~ 50% of the coastline. A one‐dimensional 224Raex/223Ra reactive‐transport model was used to quantify water flow between a coastal lagoon (La Palme) and the sea over a 6‐month period. Horizontal flow between the lagoon and sea decreased from ~ 85 cm d−1 during May 2017 (0.3 m3 d−1 m−1 of shoreline) to ~ 20 cm d−1 in July and was negligible in the summer months thereafter due to a decreasing hydraulic gradient. Seawater circulation in the swash‐zone varied from 10 to 52 cm d−1 (0.4–2.1 m3 d−1 m−1), driven by short‐term changes in the prevailing wind and wave regimes. Both flow paths supply minor dissolved silica fluxes on the order of ~ 3–10 mmol Si d−1 m−1. Lagoon–sea water exchange supplies a net dissolved inorganic carbon (DIC) flux (320–1100 mmol C d−1 m−1) two orders of magnitude greater than seawater circulation and may impact coastal ocean acidification. The subterranean flow of water through sand barriers represents a significant source of new DIC, and potentially other solutes, to the Mediterranean Sea during high lagoon water‐level periods and should be considered in seasonal element budgets.
dc.language.isoENen_US
dc.subject.enlagoons
dc.subject.encirculation
dc.subject.ensubmarine groundwater discharge
dc.subject.enradium
dc.subject.enradon
dc.title.enTemporal variability of lagoon–sea water exchange and seawater circulation through a Mediterranean barrier beach
dc.typeArticle de revueen_US
dc.identifier.doi10.1002/lno.11169en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Océanographieen_US
dc.subject.halPlanète et Univers [physics]/Interfaces continentales, environnementen_US
bordeaux.journalLimnology and Oceanographyen_US
bordeaux.page2059-2080en_US
bordeaux.volume64en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamECOBIOCen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-02095578
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Limnology%20and%20Oceanography&rft.date=2019&rft.volume=64&rft.spage=2059-2080&rft.epage=2059-2080&rft.eissn=0024-3590&rft.issn=0024-3590&rft.au=TAMBORSKI,%20Joseph&BEEK,%20Pieter&RODELLAS,%20Valenti&MONNIN,%20Christophe&BERGSMA,%20Erwin&rft.genre=article


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