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Exploring offshore sediment evidence of the 1755 CE tsunami (Faro, Portugal): implications for the study of outer shelf tsunami deposits

2020-08-19Journal article Open access
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dc.contributor.authorKümmerer, Vincent
dc.contributor.authorDrago, Teresa
dc.contributor.authorVeiga-Pires, C.
dc.contributor.authorSilva, Pedro
dc.contributor.authorMagalhaes, Vitor
dc.contributor.authorMena, Anxo
dc.contributor.authorLopes, Ana
dc.contributor.authorRodrigues, Ana Isabel
dc.contributor.authorSchmidt, Sabine
dc.contributor.authorTerrinha, Pedro
dc.contributor.authorBaptista, Maria Ana
dc.date.accessioned2020-12-21T13:04:29Z
dc.date.available2020-12-21T13:04:29Z
dc.date.issued2020-08-19
dc.description.abstractOuter shelf sedimentary records are promising for determining the recurrence intervals of tsunamis. However, compared to onshore deposits, offshore deposits are more difficult to access, and so far, studies of outer shelf tsunami deposits are scarce. Here, an example of studying these deposits is presented to infer implications for tsunami-related signatures in similar environments and potentially contribute to pre-historic tsunami event detections. A multidisciplinary approach was performed to detect the sedimentary imprints left by the 1755 CE tsunami in two cores, located in the southern Portuguese continental shelf at water depths of 58 and 91 m. Age models based on C-14 and Pb-210(xs) allowed a probable correspondence with the 1755 CE tsunami event. A multi-proxy approach, including sand composition, grain-size, inorganic geochemistry, magnetic susceptibility, and microtextural features on quartz grain surfaces, yielded evidence for a tsunami depositional signature, although only a subtle terrestrial signal is present. A low contribution of terrestrial material to outer shelf tsunami deposits calls for methodologies that reveal sedimentary structures linked to tsunami event hydrodynamics. Finally, a change in general sedimentation after the tsunami event might have influenced the signature of the 1755 CE tsunami in the outer shelf environment.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationKUMMERER, Vincent; [et al] – Exploring offshore sediment evidence of the 1755 CE tsunami (Faro, Portugal): implications for the study of outer shelf tsunami deposits. Minerals. ISSN 2075-163X. Vol. 10, N.º 9 (2020), pp. 1-30pt_PT
dc.identifier.doi10.3390/min10090731pt_PT
dc.identifier.issn2075-163X
dc.identifier.urihttp://hdl.handle.net/10400.21/12504
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationCTM 2012-39599-C03 - EC (FP7), MOWER project "Rasgos Erosivos Y Depositos Arenosos Generados Por La Mow Alrededor De Iberia: Implicaciones Paleoceanograficas, Sedimentarias Y Economicas"pt_PT
dc.relationAssessment, STrategy And Risk Reduction for Tsunamis in Europe
dc.relationUIDB/50019/2020 - IDLpt_PT
dc.relationSFRH/BD/147685/2019 - Portuguese Foundation for Science and Technologypt_PT
dc.subject1755 CE tsunamipt_PT
dc.subjectBackwashpt_PT
dc.subjectHolocene sedimentspt_PT
dc.subjectHigh-energy eventpt_PT
dc.subjectOffshore tsunami sedimentspt_PT
dc.subjectQuartz microtexturept_PT
dc.titleExploring offshore sediment evidence of the 1755 CE tsunami (Faro, Portugal): implications for the study of outer shelf tsunami depositspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssessment, STrategy And Risk Reduction for Tsunamis in Europe
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/603839/EU
oaire.citation.endPage30pt_PT
oaire.citation.issue9pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleMineralspt_PT
oaire.citation.volume10pt_PT
oaire.fundingStreamFP7
person.familyNameKümmerer
person.familyNameDrago
person.familyNameVeiga-Pires
person.familyNameSilva
person.familyNameda Silva Magalhães
person.familyNameMena
person.familyNameRodrigues
person.familyNameSchmidt
person.familyNameTerrinha
person.familyNamede Carvalho Viana Baptista
person.givenNameVincent
person.givenNameTeresa
person.givenNameCristina
person.givenNamePedro
person.givenNameVitor Hugo
person.givenNameAnxo
person.givenNameAna Isabel
person.givenNameSabine
person.givenNamePedro
person.givenNameMARIA ANA
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project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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