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Sand bypass and updrift beach evolution after jetty construction at an ebb-tidal delta

2015Journal article Open access
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dc.contributor.authorGarel, Erwan
dc.contributor.authorMendes da Silva de Sousa, Carlos A
dc.contributor.authorFerreira, Óscar
dc.date.accessioned2018-11-02T18:30:20Z
dc.date.available2018-11-02T18:30:20Z
dc.date.issued2015
dc.description.abstractThe evolution of an ebb-tidal delta (Guadiana, South Portugal) and its updrift beach after jetty construction (in 1972e1974) is analysed based on 24 ortho-rectified aerial photographs (1940e2012) and 13 bathymetric maps (1969e2014). The objectives are to evaluate the re-establishment of the sand bypassing process and if the disruption of the historical delta may affect the updrift beach evolution. Post-jetty progradation of the updrift beach resulted from two large accretion events. The second (largest) event (110 m progradation in 1985e1994) was due to beach attachment of a shoal produced by the erosion of a broad shallow area relict of the historical delta. The reworking of sand from this relict area also enables the individualisation of a lateral updrift bar simultaneously with the new ebb shoal proper formation. Both morphological features were close to (volume) equilibrium in 1995, indicating that most of the sand was transported towards the downdrift side of the inlet at that time. This study shows that erosion of the historical delta may enhance significantly the updrift shoreline progradation and may promote the re-establishment of sand bypassing after jetty construction.pt_PT
dc.description.sponsorshipThe following institutions in Portugal are acknowledged for providing some of the bathymetric maps used in this study: Ministry of Public Works, Transport and Communications (MOPTC); Hydrographic Institute (IH); and, Port and Maritime Transport Institute (IPTM).
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doihttps://doi.org/10.1016/j.ecss.2015.05.044pt_PT
dc.identifier.issn0272-7714
dc.identifier.otherAUT: OFE00989;
dc.identifier.urihttp://hdl.handle.net/10400.1/10902
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0272771415002000pt_PT
dc.subjectMixed-energy tidal inletpt_PT
dc.subjectGuadianapt_PT
dc.subjectEbb shoalpt_PT
dc.subjectLateral barpt_PT
dc.subjectMorphologypt_PT
dc.subjectShoal attachmentpt_PT
dc.titleSand bypass and updrift beach evolution after jetty construction at an ebb-tidal deltapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage13pt_PT
oaire.citation.startPage4pt_PT
oaire.citation.titleEstuarine, Coastal and Shelf Sciencept_PT
oaire.citation.volume167pt_PT
person.familyNameGarel
person.familyNameMendes da Silva de Sousa
person.familyNameFerreira
person.givenNameErwan
person.givenNameCarlos A
person.givenNameÓscar
person.identifier.ciencia-id5D13-7EA7-6C6D
person.identifier.ciencia-idBF10-E2DF-06BB
person.identifier.ciencia-id1F1C-DF44-94C9
person.identifier.orcid0000-0002-4584-9759
person.identifier.orcid0000-0003-4616-2278
person.identifier.orcid0000-0001-9975-0036
person.identifier.ridN-9811-2014
person.identifier.scopus-author-id23491739700
person.identifier.scopus-author-id37015016500
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication7e619cba-3bfb-4964-bdf3-b8afd91a4a29
relation.isAuthorOfPublicationcbaa20c3-5e33-4112-9d1d-c645c9078aa3
relation.isAuthorOfPublication14adf536-4f81-42de-b00f-6d1cf3b0d75e
relation.isAuthorOfPublication.latestForDiscoverycbaa20c3-5e33-4112-9d1d-c645c9078aa3

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