Repository logo
 
Publication

Morphological controls and statistical modelling of boulder transport by extreme storms

2020-08-01Journal article Open access
Simple item page
dc.contributor.authorOliveira, Maria Alexandra
dc.contributor.authorScotto, Manuel
dc.contributor.authorBarbosa, Susana
dc.contributor.authorAndrade, C.
dc.contributor.authorFreitas, Maria Da Conceição
dc.date.accessioned2020-07-08T08:58:53Z
dc.date.available2022-05-06T00:30:20Z
dc.date.issued2020-08-01
dc.description.abstractThe study of coastal boulder accumulations generated by extreme marine events, and of the energy and frequency involved in boulder transport, is of paramount importance in understanding the risk associated with extreme marine inundations. One of the frequently asked questions is whether the deposits are storm or tsunami-related, both events being characterized by different return periods. Boulder transport by storms was monitored on the west coast of Portugal. Significant changes were detected in boulders' position as a result of extreme inundation by the 2013/2014 winter storms. Results presented in this work indicate that the wave power associated with the “Christina” and “Nadja” storms occur once every three years. However, this interval is not supported by field observations of boulder displacement, which suggests that wave power over-predicts boulder movement in the study area. Furthermore, wave parameters from the “Christina” and “Nadja” storms were very similar, but have generated different impacts in the boulder accumulation described herein. Differences include the magnitude and direction of boulder movement, and are most likely associated with distinct tidal levels during the events. Higher tide levels generated an increase in the sea surface level and thus in the reach of waves, which generated displacement of larger boulders and consequent cross-shore contribution in boulder transport. Regardless, the combination of monitoring campaigns, wave data, and statistical modelling of extreme values indicate that boulder transport by storms is more frequent than initially expected. Based on recorded boulder movements, we present a conceptual model for boulder ridge formation and development and identify significant control of incoming flow by local geomorphological/topographical features. Storm events, not less frequent tsunamis, are identified as the events responsible for modulating this rocky coastline. These results question a direct attribution of coastal boulder deposits to tsunamis in coastal regions with a high risk of tsunami inundation.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationOliveira, M.A; Scotto, M.G.; Barbosa, S.; Andrade, C.F.; Freitas, M.C., (2020). Morphological controls and statistical modelling of boulder transport by extreme storms. Marine Geology, 426: 106216. http://dx.doi.org/10.1016/j.margeo.2020.106216pt_PT
dc.identifier.doi10.1016/j.margeo.2020.106216pt_PT
dc.identifier.urihttp://hdl.handle.net/10451/43947
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationH2020-TWINN-2015-692331
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/10.1016/j.margeo.2020.106216pt_PT
dc.subjectBoulder ridgespt_PT
dc.subjectGeomorphological controlspt_PT
dc.subjectWave powerpt_PT
dc.subjectPeaks over thresholdpt_PT
dc.subjectRocky coastlinept_PT
dc.subjectPortugalpt_PT
dc.titleMorphological controls and statistical modelling of boulder transport by extreme stormspt_PT
dc.typejournal article
dspace.entity.typePublication
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.startPage106216pt_PT
oaire.citation.titleMarine Geologypt_PT
oaire.citation.volume426pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameSoares Gomes Cardosos de Oliveira
person.familyNameScotto
person.familyNameBarbosa
person.familyNameCanêlhas Freire de Andrade
person.familyNamePombo de Freitas
person.givenNameMaria Alexandra
person.givenNameManuel
person.givenNameSusana
person.givenNameCesar Augusto
person.givenNameMaria da Conceição
person.identifierJ-7044-2013
person.identifierR-000-GTR
person.identifierE-4762-2010
person.identifier.ciencia-idEF15-B47F-4099
person.identifier.ciencia-id5E1E-4BEF-E061
person.identifier.ciencia-idEE12-068E-9D2C
person.identifier.ciencia-idD11D-F54C-A621
person.identifier.ciencia-id8211-CB3E-AA6E
person.identifier.orcid0000-0001-6771-5949
person.identifier.orcid0000-0001-8427-2684
person.identifier.orcid0000-0003-2198-3715
person.identifier.orcid0000-0002-8451-9437
person.identifier.orcid0000-0002-2616-6637
person.identifier.ridF-6020-2012
person.identifier.ridA-3632-2008
person.identifier.scopus-author-id55879380300
person.identifier.scopus-author-id7003760953
person.identifier.scopus-author-id7005050705
person.identifier.scopus-author-id33967553300
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.embargofctO tipo de licença envolvido com a editora Elsevier para esta revista, não envolvendo pagamento (APC), apenas permite acesso em repositório público do formato 'aceite' (i.e não editado e paginado pela editora) após período de embargo de 24 meses após a data da sua publicação final.pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication2459fa3e-da24-48b4-891a-4a3bf90235dd
relation.isAuthorOfPublicationb3573f6a-ea9f-4224-b62b-99c9cfd91c51
relation.isAuthorOfPublication5c4de19b-9b85-44b3-b023-790980d7bbb0
relation.isAuthorOfPublication07389ddf-dc4b-4c28-9202-c2d646d041e3
relation.isAuthorOfPublication88103b2b-b8c6-4811-bc26-6a23d747be22
relation.isAuthorOfPublication.latestForDiscovery5c4de19b-9b85-44b3-b023-790980d7bbb0
relation.isProjectOfPublication66459fd5-95a5-43b6-b8c9-97a29dc89e9d
relation.isProjectOfPublicationd1f031b5-9050-4e18-9986-fe5c69568e41
relation.isProjectOfPublication.latestForDiscoveryd1f031b5-9050-4e18-9986-fe5c69568e41

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Oliveira_et_al_2020_MG.pdf
Size:
1.81 MB
Format:
Adobe Portable Document Format
Download

Collections

cE3c - Artigos em Revistas Internacionais