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Estimating the age and mechanism of boulder transport related with extreme waves using lichenometry

2020-06-17Artigo científico Acesso aberto
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dc.contributor.authorOliveira, Maria Alexandra
dc.contributor.authorLlop, Esteve
dc.contributor.authorAndrade, C.
dc.contributor.authorBranquinho, Cristina
dc.contributor.authorGoble, Ronald
dc.contributor.authorQueiroz, Sónia
dc.contributor.authorFreitas, Maria da Conceição
dc.contributor.authorPinho, Pedro
dc.date.accessioned2020-07-21T10:39:50Z
dc.date.available2020-07-21T10:39:50Z
dc.date.issued2020-06-17
dc.description.abstractTsunamis and storms cause considerable coastal flooding, numerous fatalities, destruction of structures, and erosion. The characterization of energy and frequency associated with each wave contribute to the risk assessment in coastal regions. Coastal boulder deposits represent a physical proof of extreme inundation and allow us to study the effects of marine floods further back in time than instrumental and historical records. Age estimation of these deposits is challenging due to lack of materials (such as sand, shells, corals, or organic matter) that retain information about the passage of time. Lichenometry, a simple age estimation method, which is cost-effective, quick to apply, and non-destructive, is here proposed as a solution. A lichen growth model for a calcium-tolerant lichen species was developed and used to estimate the age of a boulder deposit related to extreme marine inundation(s) in Portugal. Estimated ages indicate several very recent events (<700 years) for most of the boulders’ stabilization and agree with results obtained with optically stimulated luminescence of marine sands found beneath boulders. Frequent and recent boulder transport implies a storm-origin for this deposit. These conclusions contrast with other works describing identical deposits that are attributed to paleotsunamis. This study presents a methodology using lichenometry as a successful alternative for age estimation in rocky coastal settings. These results offer an alternative explanation for coastal boulder deposits found on the west coast of Portugal.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationOliveira, M.A.; Llop, E.; Andrade, C.F.; Branquinho, C.; Goble, R; Queiroz, S.; Freitas. M.C.; Pinho, P., (2020). Estimating the age and mechanism of boulder transport related with extreme waves using lichenometry. Progress in Physical Geography: Earth and Environment. https://doi.org/10.1177/0309133320927629pt_PT
dc.identifier.doi10.1177/0309133320927629pt_PT
dc.identifier.urihttp://hdl.handle.net/10451/44071
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSAGE journalspt_PT
dc.relationH2020-TWINN-2015 692331pt_PT
dc.relationASSINATURAS DEPOSICIONAIS DE BLOCOS A MEGACLASTOS ORIGINADAS POR TSUNAMIS OU TEMPESTADES NO LITORAL DE PORTUGAL
dc.relationInstitute Dom Luiz
dc.relation.publisherversionhttps://doi.org/10.1177/0309133320927629pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectRocky coastlinept_PT
dc.subjectlimestonept_PT
dc.subjectfrequencypt_PT
dc.subjectoptically stimulated luminescencept_PT
dc.subjectPortugalpt_PT
dc.titleEstimating the age and mechanism of boulder transport related with extreme waves using lichenometrypt_PT
dc.title.alternativeLinking extreme waves, coastal boulders and lichenometrypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberSFRH/BD/66017/2009
oaire.awardNumberUID/GEO/50019/2013
oaire.awardTitleASSINATURAS DEPOSICIONAIS DE BLOCOS A MEGACLASTOS ORIGINADAS POR TSUNAMIS OU TEMPESTADES NO LITORAL DE PORTUGAL
oaire.awardTitleInstitute Dom Luiz
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F66017%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FGEO%2F50019%2F2013/PT
oaire.citation.startPage030913332092762pt_PT
oaire.citation.titleProgress in Physical Geography: Earth and Environmentpt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameSoares Gomes Cardosos de Oliveira
person.familyNameCanêlhas Freire de Andrade
person.familyNameBranquinho
person.familyNamePombo de Freitas
person.familyNamePinho
person.givenNameMaria Alexandra
person.givenNameCesar Augusto
person.givenNameCristina
person.givenNameMaria da Conceição
person.givenNamePedro
person.identifierJ-7044-2013
person.identifierB-3670-2008
person.identifierE-4762-2010
person.identifier.ciencia-idEF15-B47F-4099
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person.identifier.orcid0000-0001-8294-7924
person.identifier.orcid0000-0002-2616-6637
person.identifier.orcid0000-0001-5571-9619
person.identifier.ridD-1232-2010
person.identifier.scopus-author-id55879380300
person.identifier.scopus-author-id6603447018
person.identifier.scopus-author-id33967553300
person.identifier.scopus-author-id36956153900
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
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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