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Boulder deposition during major tsunami events

2011-12Journal article Open access
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dc.contributor.authorCosta, Pedro J. M.
dc.contributor.authorAndrade, Cesar
dc.contributor.authorFreitas, Maria C.
dc.contributor.authorOliveira, Maria A.
dc.contributor.authorda Silva, Carlos M.
dc.contributor.authorOmira, Rachid
dc.contributor.authorTaborda, Rui
dc.contributor.authorBaptista, Maria Ana Carvalho Viana
dc.contributor.authorDawson, Alastair G.
dc.date.accessioned2013-01-30T19:26:29Z
dc.date.available2013-01-30T19:26:29Z
dc.date.issued2011-12
dc.description.abstractA remarkable accumulation of marine boulders located above the present spring tide level has occurred in two coastal lowlands of the Algarve (Portugal). The size-interval of the particles studied here is seldom reported in the literature in association with extreme events of coastal inundation, thus making this study of relevance to many other coasts worldwide. The spreads of boulders extend several hundred meters inland and well beyond the present landward limit of storm activity. The marine origin of the boulders is demonstrated by well-developed macro-bioerosion sculpturing and in situ skeletal remains of endolithic shallow marine bivalves. The good state preservation of the fossils within the boulders indicates that abrasion duringtransport and redeposition was not significant. We envisage boulder deposition as having taken place during the Lisbon tsunami of ad 1755 through the simultaneous landward entrainment of coarse particles from nearshore followed by rapid shoreward suspended-dominated transport and non-graded redeposition that excluded significant sorting by weight or boulder dimensions. We use numerical hydrodynamic modeling of tsunami (and storm) waves to test the observational data on boulder dimensions (density, size, distribution) on the most likely processes of sediment deposition. This work demonstrates the effectiveness of the study of boulder deposits in tsunami reconstruction. Copyright (C) 2011 John Wiley & Sons, Ltd.por
dc.identifier.citationCOSTA, Pedro J. M.; ANDRADE, Cesar; FREITAS, Maria C; OLIVEIRAl, Maria A.; da SILVA, Carlos M.; OMIRA, Rachid; TABORDA, Rui; BAPTISTA, Maria A.; DAWSON, Alastair G. Boulder deposition during major tsunami events. Earth Surface Processes and Landforms. ISSN 0197-9337. Vol. 36, n.º 15 (2011) p. 2054-2068.por
dc.identifier.issn0197-9337
dc.identifier.urihttp://hdl.handle.net/10400.21/2113
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWiley-Blackwellpor
dc.subjectBoulderspor
dc.subjectStormpor
dc.subjectTsunamipor
dc.subjectSediment transportpor
dc.subjectBioerosionpor
dc.subject1755por
dc.subjectPortugalpor
dc.subjectHigh-energy eventspor
dc.subjectSouthwestern Spainpor
dc.subjectSedimentary Recordpor
dc.subjectLisbon earthquakepor
dc.subjectExtreme wavespor
dc.subjectIonian coastpor
dc.subjectPortugalpor
dc.subjectTransportpor
dc.subjectAlgarvepor
dc.titleBoulder deposition during major tsunami eventspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceMaldenpor
oaire.citation.endPage2068por
oaire.citation.issue15por
oaire.citation.startPage2054por
oaire.citation.titleEarth Surface Processes and Landformspor
oaire.citation.volume36por
person.familyNameOmira
person.familyNameTaborda
person.familyNamede Carvalho Viana Baptista
person.givenNameRachid
person.givenNameRui
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.orcid0000-0001-9620-1998
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.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationc57e1a9c-7628-49a3-98f9-4465f1ba5e5a
relation.isAuthorOfPublication229589f6-70c4-4112-b678-23be105d825c
relation.isAuthorOfPublicationa01dd185-70d9-4a8e-9c8c-1418e555ef00
relation.isAuthorOfPublication.latestForDiscovery229589f6-70c4-4112-b678-23be105d825c

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