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New study on the 1941 Gloria Fault earthquake and tsunami

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dc.contributor.authorBaptista, Maria Ana Carvalho Viana
dc.contributor.authorMiranda, Jorge Miguel
dc.contributor.authorBatlló, Josep
dc.contributor.authorLisboa, Filipe
dc.contributor.authorLuís, Joaquim
dc.contributor.authorMaciá, Ramon
dc.date.accessioned2017-06-02T13:26:44Z
dc.date.available2017-06-02T13:26:44Z
dc.date.issued2016
dc.description.abstractThe M ∼ 8.3–8.4 25 November 1941 was one of the largest submarine strike-slip earthquakes ever recorded in the Northeast (NE) Atlantic basin. This event occurred along the Eurasia–Nubia plate boundary between the Azores and the Strait of Gibraltar. After the earthquake, the tide stations in the NE Atlantic recorded a small tsunami with maximum amplitudes of 40 cm peak to through in the Azores and Madeira islands. In this study, we present a re-evaluation of the earthquake epicentre location using seismological data not included in previous studies. We invert the tsunami travel times to obtain a preliminary tsunami source location using the backward ray tracing (BRT) technique. We invert the tsunami waveforms to infer the initial sea surface displacement using empirical Green’s functions, without prior assumptions about the geometry of the source. The results of the BRT simulation locate the tsunami source quite close to the new epicentre. This fact suggests that the co-seismic deformation of the earthquake induced the tsunami. The waveform inversion of tsunami data favours the conclusion that the earthquake ruptured an approximately 160 km segment of the plate boundary, in the eastern section of the Gloria Fault between −20.249 and −18.630◦ E. The results presented here contribute to the evaluation of tsunami hazard in the Northeast Atlantic basin.pt_PT
dc.description.sponsorship603839 FP7
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBAPTISTA, M. A.; [et al] - New study on the 1941 Gloria Fault earthquake and tsunami. Natural Hazards and Earth System Sciences. ISSN 1561-8633. Vol. 16, N. º 8 (2016), pp. 1967-1977pt_PT
dc.identifier.doi10.5194/nhess-16-1967-2016pt_PT
dc.identifier.issn1561-8633
dc.identifier.urihttp://hdl.handle.net/10400.21/7140
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherCopernicus Publicationspt_PT
dc.relation.publisherversionhttp://www.nat-hazards-earth-syst-sci.net/16/1967/2016/nhess-16-1967-2016.pdfpt_PT
dc.titleNew study on the 1941 Gloria Fault earthquake and tsunamipt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1977pt_PT
oaire.citation.issue8pt_PT
oaire.citation.startPage1967pt_PT
oaire.citation.titleNatural Hazards and Earth System Sciencespt_PT
oaire.citation.volume16pt_PT
person.familyNamede Carvalho Viana Baptista
person.familyNameBatlló
person.familyNameLisboa
person.givenNameMARIA ANA
person.givenNameJosep
person.givenNameFilipe
person.identifierhttps://scholar.google.pt/citations?user=ApQ9Bp4AAAAJ&hl=pt-PT
person.identifier.ciencia-idCF12-1EE3-F49B
person.identifier.ciencia-id0113-6B7F-7071
person.identifier.ciencia-id9919-B6D9-65C3
person.identifier.orcid0000-0002-6381-703X
person.identifier.orcid0000-0002-2493-3070
person.identifier.orcid0000-0002-9143-0692
person.identifier.ridK-6985-2012
person.identifier.ridO-7997-2016
person.identifier.scopus-author-idhttps://www.scopus.com/authid/detail.uri?authorId=7102934075
person.identifier.scopus-author-id6602397368
person.identifier.scopus-author-id57188741576
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationa01dd185-70d9-4a8e-9c8c-1418e555ef00
relation.isAuthorOfPublication192520e4-f77f-43ff-9b0f-e2a47a505cbb
relation.isAuthorOfPublicationcc615396-4f63-4fb4-8eac-ad36669cd9e7
relation.isAuthorOfPublication.latestForDiscoverya01dd185-70d9-4a8e-9c8c-1418e555ef00

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