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Exploring foredune growth capacity in a coarse sandy beach

2020-12Journal article Restricted
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dc.contributor.authorCostas, Susana
dc.contributor.authorBon de Sousa, Luísa
dc.contributor.authorKombiadou, Katerina
dc.contributor.authorFerreira, Oscar
dc.contributor.authorPlomaritis, Theocharis A.
dc.date.accessioned2021-06-18T16:26:45Z
dc.date.available2022-12-31T01:30:13Z
dc.date.issued2020-12
dc.description.abstractDunes are key elements of coastal landscapes in almost every latitude. They host high levels of biodiversity and provide important benefits to society; e.g. protection against floods and erosion, or recreation. Coastal dune growth is constrained by intrinsic factors, which are critical when managing dune systems or choosing coastal dune restoration as an alternative green solution for coastal protection. Here, the evolution of a beach-dune system, characterized by a reflective coarse sandy beach and low dunes, is explored to identify the favourable and optimal conditions for dune growth in these settings. Dune growth capacity is evaluated by analysing the topographical changes observed along a coastal dune over two different temporal scales (interannual and event scale) and comparing the observations with theoretical approximations of sediment transport potentials. Observations and predictions over interannual scale document that (1) temporal variability in external conditions (wind regime) and spatial variability of estimated wind fetch length, alone, fail to explain alongshore dune growth patterns and (2) optimal conditions for dune growth occur when storms (strong winds) impact the study area, jointly with low runup levels, at zones of shoreline progradation and absence of direct human influence. Conversely, lowest values of dune accumulation are associated with areas where shoreline retreat was documented. Observations from event timescales suggest that sediment transport potential can be reached over zones with no significant signs of beach erosion, if runup levels remain low and the event duration is shorter than the time scale of sand surface depletion within the upper beach.
dc.description.sponsorshipFCT Investigator program [IF/01047/2014]
dc.description.sponsorshipFCTPortuguese Foundation for Science and TechnologyEuropean Commission [SFRH/BD/144869/2019]
dc.description.sponsorshipPortuguese Science and Technology Foundation (FCT) through National and FEDER Funds [PTDC/CTA-GFI/28949/2017]
dc.description.sponsorship(FCT) Portuguese Foundation for Science and Technology [UIDP/00350/2020]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1016/j.geomorph.2020.107435
dc.identifier.issn0169-555X
dc.identifier.urihttp://hdl.handle.net/10400.1/15916
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.subjectBeach face slope
dc.subjectRunup
dc.subjectScarp
dc.subjectPotential aeolian transport
dc.subject.otherPhysical geography
dc.subject.otherGeology
dc.titleExploring foredune growth capacity in a coarse sandy beach
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage107435
oaire.citation.titleGeomorphology
oaire.citation.volume371
person.familyNameCostas
person.familyNameSerrão Bon de Sousa
person.familyNameKombiadou
person.familyNameFerreira
person.givenNameSusana
person.givenNameMaria Luísa
person.givenNameKaterina
person.givenNameÓscar
person.identifier1448818
person.identifier.ciencia-idAF19-9EEE-7550
person.identifier.ciencia-idE218-3C8E-DF78
person.identifier.ciencia-id1813-F159-070B
person.identifier.ciencia-id1F1C-DF44-94C9
person.identifier.orcid0000-0002-4005-077X
person.identifier.orcid0000-0002-8583-8771
person.identifier.orcid0000-0003-1199-1236
person.identifier.orcid0000-0001-9975-0036
person.identifier.ridM-7458-2017
person.identifier.scopus-author-id9043656500
person.identifier.scopus-author-id16029005200
rcaap.rightsopenAccesspt_PT
rcaap.typearticle
relation.isAuthorOfPublication62d73183-10ba-42ca-80a7-458c42d1375b
relation.isAuthorOfPublicationf241a9af-4e28-4af5-a20f-e141c0e0c7fa
relation.isAuthorOfPublication97b4019d-d2a2-480b-a04b-c1c5e4e6fc33
relation.isAuthorOfPublication14adf536-4f81-42de-b00f-6d1cf3b0d75e
relation.isAuthorOfPublication.latestForDiscovery97b4019d-d2a2-480b-a04b-c1c5e4e6fc33

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