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Study of the 24 September 2013 Oman Sea tsunami using linear shallow water inversion

2020-07-06Journal article Restricted access
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dc.contributor.authorBaptista, Maria Ana Carvalho Viana
dc.contributor.authorMIRANDA, JORGE MIGUEL
dc.contributor.authorOmira, Rachid
dc.contributor.authorEl-Hussain, Issa
dc.date.accessioned2021-01-21T15:36:02Z
dc.date.available2021-01-21T15:36:02Z
dc.date.issued2020-07-06
dc.description.abstractIn this study, we present a linear inverse approach for the computation of the initial water displacement of a tsunami. The method uses empirical Green functions and linear shallow water wave theory. We apply this methodology to study the source of the 24 September 2013 tsunami off the Makran coast. We re-analyze the 2013 tsunami data, particularly the tide records in the coast of Oman and the DART buoy record in the Arabian Sea, to infer its source. We use wavelet and Fourier analyses to characterize the frequency content of the tide records and the possible influence of local harbor effects. We compute empirical Green functions for the possible source area, and then use a linear shallow water inversion technique to assess the water disturbance in the early stage of tsunami propagation. The comparison between forward modeling and observations shows a fair agreement with available data, particularly in what concerns the DART record. It also suggests the existence of local amplifications in a number of Omani harbors. The free surface elevation obtained by inversion of the waveforms is coherent with a landslide located close to 61.5 degrees E, 24 degrees N, sliding to the S or SSE direction. Our results show that the inversion technique used here leads to a better characterization of the tsunami source than the simple backward ray tracing which assumes a simple point source. In addition, these results strengthen the hypothesis that landslides might have played an important role in previous tsunami events in the area, and must be taken into account for tsunami hazard assessment on the Omani coast.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBAPTISTA, Maria Ana; [et al] – Study of the 24 September 2013 Oman Sea tsunami using linear shallow water inversion. Arabian Journal of Geosciences. ISSN 1866-7511. Vol. 13, N.º 14 (2020), pp. 1-12pt_PT
dc.identifier.doi10.1007/s12517-020-05632-zpt_PT
dc.identifier.eissn1866-7538
dc.identifier.issn1866-7511
dc.identifier.urihttp://hdl.handle.net/10400.21/12664
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationPTDC/CTA-GEO/30381/2017 - Portuguese Science and Technology Foundation project MAGICLAND -MarineGeohazards Induced by underwater landslides in SW Iberian Marginpt_PT
dc.relationUIDB/50019/2020 - IDL - FCTpt_PT
dc.relation.publisherversionhttps://link.springer.com/article/10.1007%2Fs12517-020-05632-zpt_PT
dc.subjectTsunamipt_PT
dc.subjectInversionpt_PT
dc.subjectIndian Oceanpt_PT
dc.titleStudy of the 24 September 2013 Oman Sea tsunami using linear shallow water inversionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage12pt_PT
oaire.citation.issue14pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleArabian Journal of Geosciencespt_PT
oaire.citation.volume13pt_PT
person.familyNamede Carvalho Viana Baptista
person.familyNameMIRANDA
person.familyNameOmira
person.familyNameEl-Hussain
person.givenNameMARIA ANA
person.givenNameJORGE MIGUEL
person.givenNameRachid
person.givenNameIssa
person.identifierhttps://scholar.google.pt/citations?user=ApQ9Bp4AAAAJ&hl=pt-PT
person.identifier1644327
person.identifier972486
person.identifier.ciencia-idCF12-1EE3-F49B
person.identifier.ciencia-idED1A-8CC7-06DB
person.identifier.ciencia-idC116-66FF-BB9B
person.identifier.orcid0000-0002-6381-703X
person.identifier.orcid0000-0002-1321-8709
person.identifier.orcid0000-0002-6198-7588
person.identifier.orcid0000-0003-2846-8214
person.identifier.ridB-5287-2008
person.identifier.ridN-2533-2013
person.identifier.scopus-author-idhttps://www.scopus.com/authid/detail.uri?authorId=7102934075
person.identifier.scopus-author-id7202982159
person.identifier.scopus-author-id34971883700
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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