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dc.contributor.authorBertin, Xavier
dc.contributor.authorCastelle, Bruno
dc.contributor.authorAnfuso, Giorgio
dc.contributor.authorFerreira, Oscar
dc.contributor.editorBurg W Flemming (Editor-in-Chief)
dc.date.accessioned2017-05-03T16:56:47Z
dc.date.available2017-05-03T16:56:47Z
dc.date.issued2008
dc.date.modified2009-05-14T10:23:42Z
dc.identifier.issn02760460
dc.identifier.urihttp://hdl.handle.net/10072/23445
dc.description.abstractThis study presents sand activation depth (SAD) measurements recently obtained on two contrasting beaches located along the Atlantic coast of France: the gently sloping, high-energy St Trojan beach where wave incidence is usually weak, and the steep, low-energy Ar硹 Sandspit beach where waves break at highly oblique angles. Comparisons between field measurements and predictions from existing formulae show good agreement for St Trojan beach but underestimate the SAD on the Ar硹 Sandspit beach by 40-60%. Such differences suggest a strong influence of wave obliquity on SAD. To verify this hypothesis, the relative influence of wave parameters was investigated by means of numerical modelling. A quasi-linear increase of SAD with wave height was confirmed for shore-normal and slightly oblique wave conditions, and a quasi-linear increase in SAD with wave obliquity was also revealed. Combining the numerical results with previously published relations, both a new semi-empirical and an empirical formula for the prediction of SAD were developed which showed good SAD predictions under conditions of oblique wave breaking. The new empirical formula for the prediction of SAD (Z0) takes into account the significant wave height (Hs), the beach face slope (ߩ and the wave angle at breaking (a), and is of the form Z0 = 1.6 tan (ߩHs0.5 v1 + sin (2a). The use of a dataset from the literature demonstrates the predictive skill of these new formulae for a wide range of wave heights, wave incidence and beach gradients. 頓pringer-Verlag 2007.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer
dc.publisher.placeGermany
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom65
dc.relation.ispartofpageto67
dc.relation.ispartofissue2
dc.relation.ispartofjournalGeo-Marine Letters: an international journal of marine geology
dc.relation.ispartofvolume28
dc.rights.retentionY
dc.subject.fieldofresearchOceanography not elsewhere classified
dc.subject.fieldofresearchGeophysics
dc.subject.fieldofresearchOceanography
dc.subject.fieldofresearchPhysical Geography and Environmental Geoscience
dc.subject.fieldofresearchcode040599
dc.subject.fieldofresearchcode0404
dc.subject.fieldofresearchcode0405
dc.subject.fieldofresearchcode0406
dc.titleImprovement of sand activation depth prediction under conditions of oblique wave breaking
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2008
gro.hasfulltextNo Full Text
gro.griffith.authorCastelle, Bruno O.


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