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Wave runup and overwash on a prototype-scale sand barrier

2016-07Journal article Restricted access
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dc.contributor.authorBlenkinsopp, C. E.
dc.contributor.authorMatias, Ana
dc.contributor.authorHowe, D.
dc.contributor.authorCastelle, B.
dc.contributor.authorMarieu, V.
dc.contributor.authorTurner, I. L.
dc.date.accessioned2017-04-07T15:56:26Z
dc.date.available2017-04-07T15:56:26Z
dc.date.issued2016-07
dc.description.abstractAccurate methods to predict wave runup are of critical importance to coastal engineers. Extreme runup during storm conditions can present a danger to coastal infrastructure and lead to dune overtopping and erosion, overwash. of barrier beaches and is an essential design parameter for certain coastal protection works. This paper uses data obtained during the unique BARDEX II prototype-scale laboratory experiment on a reflective sand barrier to investigate wave runup and overwash. Runup measurements were acquired using ultrasonic altimeters, 2D scanning Lidar and camera systems under controlled wave and water level conditions. It was found that extreme runup (R-2%) scaled well with the deepwater Irribarren number where the beach slope was taken to be the beach face gradient. The lower limit of the swash zone, defined by the 2% wave rundown limit was also found to be a function of the Irribarren number and was consistently below the SWL in all tests. The high resolution free-surface measurements obtained using the ultrasonic altimeters and Lidar enabled an analysis of the dynamics of individual swash events. It was found that the vertical runup excursion of each swash correlated strongly with the height of the bore at collapse, and could be predicted based on the assumption of a conversion of potential to kinetic energy at bore collapse. (C) 2015 Elsevier B.V. All rights reserved.
dc.description.sponsorshipHYDRALAB IV grant, contract no. 261520; Australian Research Council Discovery Grant (DP110101176)
dc.identifier.doi10.1016/j.coastaleng.2015.08.006
dc.identifier.issn0378-3839
dc.identifier.urihttp://hdl.handle.net/10400.1/9413
dc.language.isoeng
dc.peerreviewedyes
dc.relationMulti-approach study of coastal inundation and overwash
dc.relation.isbasedonWOS:000378454800008
dc.titleWave runup and overwash on a prototype-scale sand barrier
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMulti-approach study of coastal inundation and overwash
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F00354%2F2012%2FCP0176%2FCT0002/PT
oaire.citation.endPage103
oaire.citation.startPage88
oaire.citation.titleCoastal Engineering
oaire.citation.volume113
oaire.fundingStreamInvestigador FCT
person.familyNameMatias
person.givenNameAna
person.identifierR-000-116
person.identifier.ciencia-id2811-D7C1-1DE2
person.identifier.orcid0000-0003-2090-6291
person.identifier.ridE-9709-2013
person.identifier.scopus-author-id56260567900
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication3561d2b7-54a3-4ca9-a7c7-97014749414a
relation.isAuthorOfPublication.latestForDiscovery3561d2b7-54a3-4ca9-a7c7-97014749414a
relation.isProjectOfPublicationc881b050-3ea3-4798-afbf-e496dd5c4e6b
relation.isProjectOfPublication.latestForDiscoveryc881b050-3ea3-4798-afbf-e496dd5c4e6b

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