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The morphosedimentary behaviour of a headland–beach system: quantifying sediment transport using fluorescent tracers

2017Journal article Restricted access
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dc.contributor.authorOliveira, Sónia
dc.contributor.authorMoura, Delminda
dc.contributor.authorHorta, João
dc.contributor.authorNascimento, Ana
dc.contributor.authorGomes, A.I.
dc.contributor.authorVeiga-Pires, C.
dc.date.accessioned2018-01-09T15:17:26Z
dc.date.available2018-01-09T15:17:26Z
dc.date.issued2017
dc.date.updated2018-01-09T09:32:24Z
dc.description.abstractEmbayed beaches occurring along rocky coasts with headlands controlling hydrosedimentary processes are considered to be constrained sedimentary systems with little longshore sediment transfer between them. Such beaches are likely to narrow under rising sea level and a deficit of fluvial sediment, and because beaches act to dissipate wave energy, cliff erosion is expected to increase. Knowledge of hydrosedimentary processes in fetch-limited environments such as embayed beaches is therefore a fundamental management tool in erosionprone coastal areas such as the Algarve region (southern Portugal). The main objective of this work is to quantify longshore sediment transport (LST) using a sedimentary tracer and compare the results with the ones derived via empirical formulae from several authors. To achieve this, we establish the spatial and temporal patterns of stained sediment, and relate these to marine climate data over six tidal cycles for three adjacent embayed beaches. The values of displaced sand estimated using tracer and scaled to mixed layer depth were compared with the results of five well-known LST formulae to assess the applicability of each model to mesotidal environments. Of the LST formulae used, the CERC (2013) shows to be the most accurate in our study area. This study demonstrates the efficacy of using tracers for tracking and quantifying the sediment transport and as a basis for assessing the viability of different LST formulae for representing transport in these types of environments. The work also shows the importance of the morphological control of hydrosedimentary processes, including the disruption of longshore drift and the sediment transfer promoted by shore platforms.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier00253227en_US
dc.identifier.citationOliveira, Sónia; Moura, Delminda; Horta, João; Nascimento, Ana; Gomes, Ana; Veiga-Pires, Cristina. The morphosedimentary behaviour of a headland–beach system: Quantifying sediment transport using fluorescent tracers, Marine Geology, 388, 62-73, 2017.pt_PT
dc.identifier.issn0025-3227
dc.identifier.otherAUT: DMO00293; PGS02043; CVP01371;
dc.identifier.urihttp://hdl.handle.net/10400.1/10300
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMoving Sands- Equilibrium State of Crenulated Coasts- MOSES
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectRocky coastspt_PT
dc.subjectEmbayed beachespt_PT
dc.subjectLongshore transportpt_PT
dc.subjectSedimentary tracerspt_PT
dc.subjectCoastal managementpt_PT
dc.titleThe morphosedimentary behaviour of a headland–beach system: quantifying sediment transport using fluorescent tracerspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMoving Sands- Equilibrium State of Crenulated Coasts- MOSES
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FGEO-GEO%2F3981%2F2012/PT
oaire.citation.endPage73pt_PT
oaire.citation.startPage62pt_PT
oaire.citation.titleMarine Geologypt_PT
oaire.citation.volume338pt_PT
oaire.fundingStream3599-PPCDT
person.familyNameJenkins Oliveira Fernandes
person.familyNameMoura
person.familyNameHorta
person.familyNameGomes
person.familyNameVeiga-Pires
person.givenNameSónia Alexandra
person.givenNameDelminda
person.givenNameJoão
person.givenNameAna
person.givenNameCristina
person.identifier113325
person.identifier.ciencia-id7B1C-1CB3-A37D
person.identifier.ciencia-id331B-BA33-96A6
person.identifier.ciencia-id4A1F-CEDA-E66C
person.identifier.orcid0000-0002-2991-686X
person.identifier.orcid0000-0002-0952-6805
person.identifier.orcid0000-0003-3663-9036
person.identifier.orcid0000-0002-9793-4816
person.identifier.orcid0000-0002-9323-0723
person.identifier.ridC-3969-2015
person.identifier.ridB-5144-2008
person.identifier.scopus-author-id57193909844
person.identifier.scopus-author-id15048413000
person.identifier.scopus-author-id55851149800
person.identifier.scopus-author-id56346514200
person.identifier.scopus-author-id7801372905
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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