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The influence of coastal processes on inner shelf sediment distribution: The Eastern Algarve Shelf (Southern Portugal)

2013-03Journal article Open Access
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dc.contributor.authorRosa, F.
dc.contributor.authorRufino, M. M.
dc.contributor.authorFerreira, O.
dc.contributor.authorMatias, Ana
dc.contributor.authorBrito, Ana C.
dc.contributor.authorGaspar, Miguel
dc.date.accessioned2018-12-07T14:53:43Z
dc.date.available2018-12-07T14:53:43Z
dc.date.issued2013-03
dc.description.abstractThis study examines sediment distribution patterns in the Southeastern Algarve inner shelf (southern Portugal), an area characterized by marked variations in its coastal environment and low continental supply of sediments. The specific goals of this study were to identify the principal sediment sources and the factors influencing sediment transport paths and deposition. A total of 199 samples, collected along the shelf from the Guadiana River mouth to Olhos de Agua, were analyzed. Grain-size distribution and parameters were measured for all the samples. Terrigenous and biogenic components of sand were identified in 38 samples, and results analyzed using multivariate non-linear multidimension scaling (MDS) and cluster analysis. Patterns of sediment distribution in this area of the inner shelf vary according to water depth and exhibit significant longshore variation, related mainly to coastal processes (littoral drift and storm currents) and to a lower degree to sediment sources. Sand is dominant at all depths, reflecting the influence of littoral drift in the supply and redistribution of shelf sediments. Fine and gravel-sized deposits are significant in specific areas and are usually associated with changes in sediment composition. Five sectors have been identified according to sedimentary dynamics. The results, based on geostatistical and multivariate analysis, have allowed detailed sediment distribution maps to be generated, which represent an update of the existing cartography and serve as a tool for the management of coastal and marine resources. They have been furthermore compared with inner shelf sediment dynamics in other regions worldwide, to distinguish between specific regional responses to forcing mechanisms and processes that are more generalized within this type of shelf environments. In this context, the results obtained results in the Algarve study area are of great interest for the understanding of sediment dynamics of sand dominated inner shelves with reduced continental supply.
dc.identifier.doi10.1344/105.000001755
dc.identifier.issn1695-6133
dc.identifier.urihttp://hdl.handle.net/10400.1/11653
dc.language.isoeng
dc.peerreviewedyes
dc.publisherUniv Barcelona
dc.relationImpact of climatic and anthopic variations on the Northern continental shelf, Gulf of Cadiz
dc.relationClimate changes from isotopic records during the Holocene in South-western Iberia (CIRCO)
dc.relationECOLOGY AND DISTRIBUTION OF MAIN BIVALVE SPECIES IN THE SOUTH COAST OF PORTUGAL THROUGH THE USE OF GEOSTATISTICAL TECHNIQUES AND GEOMETRIC MORPHOMETRIC
dc.relationSTRUCTURAL AND MECHANISTIC STUDIES OF FERROCHELATASE, THE LAST ENZYME OF THE HEME BIOSYNTHETIC PATHWAY, USING A SITE-DIRECTED MUTAGENESIS APPROACH
dc.subjectContinental-Shelf
dc.subjectMacrobenthic Community
dc.subjectBeach Nourishment
dc.subjectBarrier Islands
dc.subjectCliff Retreat
dc.subjectGeostatistics
dc.subjectCadiz
dc.subjectGulf
dc.subjectEnvironments
dc.subjectEvolution
dc.titleThe influence of coastal processes on inner shelf sediment distribution: The Eastern Algarve Shelf (Southern Portugal)
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleImpact of climatic and anthopic variations on the Northern continental shelf, Gulf of Cadiz
oaire.awardTitleClimate changes from isotopic records during the Holocene in South-western Iberia (CIRCO)
oaire.awardTitleECOLOGY AND DISTRIBUTION OF MAIN BIVALVE SPECIES IN THE SOUTH COAST OF PORTUGAL THROUGH THE USE OF GEOSTATISTICAL TECHNIQUES AND GEOMETRIC MORPHOMETRIC
oaire.awardTitleSTRUCTURAL AND MECHANISTIC STUDIES OF FERROCHELATASE, THE LAST ENZYME OF THE HEME BIOSYNTHETIC PATHWAY, USING A SITE-DIRECTED MUTAGENESIS APPROACH
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCI%2FCLI%2F60192%2F2004/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCLI%2F66393%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI-2010/SFRH%2FBPD%2F14935%2F2004/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F14935%2F2004/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F18746%2F2004/PT
oaire.citation.endPage73
oaire.citation.issue1
oaire.citation.startPage59
oaire.citation.titleGeologica Acta
oaire.citation.volume11
oaire.fundingStreamPOCI
oaire.fundingStream3599-PPCDT
oaire.fundingStreamPOCI-2010
oaire.fundingStreamSFRH
person.familyNameMatias
person.familyNameBrito
person.familyNameGaspar
person.givenNameAna
person.givenNameAna C.
person.givenNameMiguel
person.identifierR-000-116
person.identifier.ciencia-id2811-D7C1-1DE2
person.identifier.ciencia-idFF16-4E19-EEF4
person.identifier.ciencia-idF719-07AC-E41F
person.identifier.orcid0000-0003-2090-6291
person.identifier.orcid0000-0001-6539-5830
person.identifier.orcid0000-0001-9245-8518
person.identifier.ridE-9709-2013
person.identifier.ridF-4473-2011
person.identifier.ridF-5398-2011
person.identifier.scopus-author-id56260567900
person.identifier.scopus-author-id26431242400
person.identifier.scopus-author-id23501123500
project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
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