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Overtopping hazard on a rubble mound breakwater

2014Journal article Restricted access
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dc.contributor.authorCarrasco, A. Rita
dc.contributor.authorReis, Maria T.
dc.contributor.authorNeves, Maria G.
dc.contributor.authorFerreira, Oscar
dc.contributor.authorMatias, Ana
dc.contributor.authorAlmeida, Sílvia
dc.date.accessioned2019-09-23T18:14:33Z
dc.date.available2019-09-23T18:14:33Z
dc.date.issued2014
dc.date.updated2019-09-11T15:01:09Z
dc.description.abstractA major concern of coastal engineering is not only to access the damage to coastal structures by severe wave overtopping, but also the hazard imposed to users. Local hazard is often associated to the volume of overtopping water per unit of time (called overtopping discharge). Despite two decades of intensive research, it is yet not fully clear to practitioners what is the best method to compute the discharge parameter and its application on the assessment of local hazard. This work provides insight into the overtopping characterization in rubble mound breakwaters, by distinguishing different methods to assess hazardous overtopping. Fieldwork was conducted over a tidal cycle in a breakwater located at Albufeira Harbour (South coast of Portugal) under storm conditions (Hso~ 3 m; Tp ~ 9 s). Mean overtopping discharges were calculated from field measurements of flow depths and velocities at the breakwater slope armour and at the impermeable crest. Two different velocities were calculated: overtopping leading-edge velocity and overtopping peak velocity. The two methods provided similar results, with higher velocities occurring during high-tide (between 2 and 10 m/s). Mean overtopping discharges at the beginning of the impermeable crest ranged between 0.2 and 0.8 l/s/m. Under the measured hydrodynamic conditions, the breakwater offers risk to all types of pedestrians. Additionally it is shown that field measurements compare relatively well with empirical prediction methods (for the overall analysed overtopping events), namely the corrected NN_OVERTOPPING2 neural network tool. Besides contributing to the overall database on wave overtopping in coastal structures, the presented results can also be used for calibration and validation of overtopping evaluation methods (empirical formulae, artificial neural networks and numerical and physical models).pt_PT
dc.description.sponsorshipProvided by PTCRIS: 116814
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doihttps://doi.org/10.2112/SI70-042.1
dc.identifier.issn0749-0208
dc.identifier.otherP-009-N9D
dc.identifier.other2-s2.0-84946171518
dc.identifier.otherWOS:000338176100043
dc.identifier.slugcv-prod-81827
dc.identifier.urihttp://hdl.handle.net/10400.1/12778
dc.language.isoporpt_PT
dc.peerreviewedyespt_PT
dc.publisherCoastal Education and Research Foundation (CERF)pt_PT
dc.relationMulti-approach study of coastal inundation and overwash
dc.relationCOASTAL LAGOONS AND SEA LEVEL RISE: WHAT TO EXPECT
dc.relationRUSH - From runup to overwash
dc.relation.ispartofJournal of Coastal Researchen_US
dc.relation.publisherversionhttps://www.jcronline.org/doi/abs/10.2112/SI70-042.1pt_PT
dc.subjectWavept_PT
dc.subjectDischargept_PT
dc.subjectVelocitiespt_PT
dc.subjectHazardpt_PT
dc.subjectEmpirical predictionpt_PT
dc.titleOvertopping hazard on a rubble mound breakwaterpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMulti-approach study of coastal inundation and overwash
oaire.awardTitleCOASTAL LAGOONS AND SEA LEVEL RISE: WHAT TO EXPECT
oaire.awardTitleRUSH - From runup to overwash
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FECM%2F114109%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F00354%2F2012%2FCP0176%2FCT0002/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F88485%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCTE-GIX%2F116814%2F2010/PT
oaire.citation.endPage252pt_PT
oaire.citation.issuesp1pt_PT
oaire.citation.startPage247pt_PT
oaire.citation.titleJournal of Coastal Research -Special Issue-pt_PT
oaire.citation.volume70pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStreamInvestigador FCT
oaire.fundingStream3599-PPCDT
person.familyNameCarrasco
person.familyNameFerreira
person.familyNameMatias
person.givenNameA. Rita
person.givenNameÓscar
person.givenNameAna
person.identifier545203
person.identifierR-000-116
person.identifier.ciencia-idA31E-1703-4030
person.identifier.ciencia-id1F1C-DF44-94C9
person.identifier.ciencia-id2811-D7C1-1DE2
person.identifier.orcid0000-0002-8980-0068
person.identifier.orcid0000-0001-9975-0036
person.identifier.orcid0000-0003-2090-6291
person.identifier.ridD-2235-2016
person.identifier.ridE-9709-2013
person.identifier.scopus-author-id15724386100
person.identifier.scopus-author-id56260567900
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.cv.cienciaid2811-D7C1-1DE2 | Ana Matias
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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