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Probabilistic tsunami hazard in the Northeast Atlantic from near- and far-field tectonic sources

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dc.contributor.authorOmira, Rachid
dc.contributor.authorBaptista, Maria Ana Carvalho Viana
dc.contributor.authorMatias, Luís
dc.date.accessioned2016-02-23T16:42:39Z
dc.date.available2016-02-23T16:42:39Z
dc.date.issued2015-03
dc.description.abstractIn this article, we present the first study on probabilistic tsunami hazard assessment for the Northeast (NE) Atlantic region related to earthquake sources. The methodology combines the probabilistic seismic hazard assessment, tsunami numerical modeling, and statistical approaches. We consider three main tsunamigenic areas, namely the Southwest Iberian Margin, the Gloria, and the Caribbean. For each tsunamigenic zone, we derive the annual recurrence rate for each magnitude range, from Mw 8.0 up to Mw 9.0, with a regular interval, using the Bayesian method, which incorporates seismic information from historical and instrumental catalogs. A numerical code, solving the shallow water equations, is employed to simulate the tsunami propagation and compute near shore wave heights. The probability of exceeding a specific tsunami hazard level during a given time period is calculated using the Poisson distribution. The results are presented in terms of the probability of exceedance of a given tsunami amplitude for 100- and 500-year return periods. The hazard level varies along the NE Atlantic coast, being maximum along the northern segment of the Morocco Atlantic coast, the southern Portuguese coast, and the Spanish coast of the Gulf of Cadiz. We find that the probability that a maximum wave height exceeds 1 m somewhere in the NE Atlantic region reaches 60 and 100 % for 100- and 500-year return periods, respectively. These probability values decrease, respectively, to about 15 and 50 % when considering the exceedance threshold of 5 m for the same return periods of 100 and 500 years.pt_PT
dc.identifier.citationOMIRA, Rachid; BAPTISTA, Maria Ana Viana; MATIAS, Luís - Probabilistic tsunami hazard in the Northeast Atlantic from near- and far-field tectonic sources. Pure and Applied Geophysics. ISSN. 0033-4553. Vol. 172, N.º 3-4 (2015), pp. 901-920pt_PT
dc.identifier.doi10.1007/s00024-014-0949-xpt_PT
dc.identifier.issn0033-4553
dc.identifier.issn1420-9136
dc.identifier.urihttp://hdl.handle.net/10400.21/5719
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Basel AGpt_PT
dc.relation.publisherversionhttp://link.springer.com/article/10.1007%2Fs00024-014-0949-xpt_PT
dc.subjectTsunamipt_PT
dc.subjectProbabilistic approachpt_PT
dc.subjectNE Atlanticpt_PT
dc.titleProbabilistic tsunami hazard in the Northeast Atlantic from near- and far-field tectonic sourcespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage920pt_PT
oaire.citation.issue3-4pt_PT
oaire.citation.startPage901pt_PT
oaire.citation.volume172pt_PT
person.familyNameOmira
person.familyNamede Carvalho Viana Baptista
person.givenNameRachid
person.givenNameMARIA ANA
person.identifier972486
person.identifierhttps://scholar.google.pt/citations?user=ApQ9Bp4AAAAJ&hl=pt-PT
person.identifier.ciencia-idC116-66FF-BB9B
person.identifier.ciencia-idCF12-1EE3-F49B
person.identifier.orcid0000-0002-6198-7588
person.identifier.orcid0000-0002-6381-703X
person.identifier.ridN-2533-2013
person.identifier.scopus-author-id34971883700
person.identifier.scopus-author-idhttps://www.scopus.com/authid/detail.uri?authorId=7102934075
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationc57e1a9c-7628-49a3-98f9-4465f1ba5e5a
relation.isAuthorOfPublicationa01dd185-70d9-4a8e-9c8c-1418e555ef00
relation.isAuthorOfPublication.latestForDiscoveryc57e1a9c-7628-49a3-98f9-4465f1ba5e5a

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