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Satellite derived shorelines at an Eexposed meso-tidal beach

2020Journal article Open access
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dc.contributor.authorCabezas-Rabadan, Carlos
dc.contributor.authorPardo-Pascual, Josep E.
dc.contributor.authorPalomar-Vazquez, Jesus
dc.contributor.authorFerreira, Oscar
dc.contributor.authorCostas, Susana
dc.date.accessioned2021-06-24T11:36:07Z
dc.date.available2021-06-24T11:36:07Z
dc.date.issued2020
dc.description.abstractShoreline position data offer extremely valuable information for understanding coastal dynamism and beach changes. This research applies SHOREX system for defining the shoreline position from free mid-resolution Landsat-8 (L8) and Sentinel-2 (S2) satellite imagery. This system allows an automatic definition of Satellite Derived Shorelines (SDS) over large regions and periods. Accuracy and utility of the resulting SDS have been previously assessed with positive results at low energy, microtidal, Mediterranean beaches. This work assesses SDS extracted using SHOREX at a mesotidal and moderate to highly (during storms) energetic environment, namely at Faro Beach, a barrier beach located in Ria Formosa (Algarve, South Portugal). Accuracy was defined for 14 SDS derived from S2 and 10 from L8 by measuring the differences in position with respect to the shoreline inferred from profiles obtained on close dates (or simultaneously) to imagery acquisition. For non-simultaneous datasets, the water level was estimated for the time of the satellite images acquisition using oceanographic data and run-up formulations. The measured and estimated shoreline positions were then compared with the extracted SDS. The overall accuracy is good, with errors about 5 m RMSE, supporting the application of the used methodology to define shoreline dynamics and evolution at challenging environments, as mesotidal exposed and dynamic beaches.
dc.description.sponsorshipSpanish Ministry of Economy and Competitiveness [CGL2015-69906-R]; Spanish Ministry of Education, Culture and Sports [FPU15/04501]
dc.description.versioninfo:eu-repo/semantics/submittedVersion
dc.identifier.doi10.2112/SI95-200.1
dc.identifier.issn0749-0208
dc.identifier.urihttp://hdl.handle.net/10400.1/16632
dc.language.isoeng
dc.peerreviewedyes
dc.publisherCoastal Education & Research Foundation
dc.relationMulti-scale approach of long-term coastal adaptation to climate variability
dc.relationCentre for Marine and Environmental Research
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectLandsat-8
dc.subjectSentinel-2
dc.subjectsubpixel extraction
dc.subjectSDS assessment
dc.subjectbeach changes
dc.titleSatellite derived shorelines at an Eexposed meso-tidal beach
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMulti-scale approach of long-term coastal adaptation to climate variability
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FCTA-OHR%2F28657%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F01047%2F2014%2FCP1234%2FCT0003/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMAR%2F00350%2F2013/PT
oaire.citation.endPage1031
oaire.citation.startPage1027
oaire.citation.titleJournal of Coastal Research
oaire.fundingStream9471 - RIDTI
oaire.fundingStreamInvestigador FCT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameFerreira
person.familyNameCostas
person.givenNameÓscar
person.givenNameSusana
person.identifier1448818
person.identifier.ciencia-id1F1C-DF44-94C9
person.identifier.ciencia-idAF19-9EEE-7550
person.identifier.orcid0000-0001-9975-0036
person.identifier.orcid0000-0002-4005-077X
person.identifier.scopus-author-id9043656500
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
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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relation.isAuthorOfPublication.latestForDiscovery62d73183-10ba-42ca-80a7-458c42d1375b
relation.isProjectOfPublicationf10e2bd9-39c6-44b6-8de6-1886578531e3
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