Repository logo
 
Publication

Overwash experiment on a sandy barrier

2013Journal article Restricted access
Simple item page
dc.contributor.authorMatias, Ana
dc.contributor.authorMasselink, G.
dc.contributor.authorKroon, A.
dc.contributor.authorBlenkinsopp, C. E.
dc.contributor.authorTurner, I. L.
dc.date.accessioned2019-09-23T18:59:08Z
dc.date.available2019-09-23T18:59:08Z
dc.date.issued2013
dc.date.updated2019-09-11T15:10:34Z
dc.description.abstractThis paper uses results obtained from the large-scale BARDEX II experiment undertaken in the Delta flume to investigate the morphological response of a prototype sandy barrier to wave and tidal forcing during overwash conditions. Since overwash processes are known to control short-term barrier dynamics and long-term barrier migration, the development of a robust quantitative method to define the critical conditions leading to barrier overwash is important both for scientific and practical management purposes. The Overwash Potential (OP), defined as the difference between the wave runup and the barrier elevation is used to define the overwash threshold condition, and to predict the morphological outcome of a particular overwash event. When OP is negative, wave runup is lower than the barrier crest and insignificant morphological changes are noticed at the barrier crest. When OP is positive, overwash occurs because predicted runup elevation is higher than the barrier crest. When OP is close to zero, overtop is expected with limited intrusion of water across the top of the barrier crest. To make effective use of OP it is necessary to identify a reliable runup predictor. Twelve runup equations were tested for this purpose, and the results were compared with the ones obtained using data from BARDEX experiment on a gravel barrier. A most reliable approach for the determination of OP for sandy barrier was similar to gravel barrier overwash experiments, with runup predictions provided by the equation of Stockdon et al. [Stockdon, H.F., Holman, R.A., Howd, P.A.,Sallenger, A.H., 2006. Empirical parameterization of setup, swash, and runup. Coast. Eng., 53, 573-588]. This is striking, since different runup predictors would have been expected because beach slope, hydraulic conductivity, grain-size, amongst other factors, differ for both types of barriers. Nevertheless, the two main morphologic characteristics for the computation of OP are beach slope and the barrier crest elevation, both accounted for in the proposed equation. The use of OP values provides a practical means by which to identify potential coastal hazards associated with barrier overwash processes and is considered to have a range of practical coastal management applications.pt_PT
dc.description.sponsorshipDelta flume BARDEX II project (HYDRALAB IV, contract no. 261520, Barrier Dynamics Experiment). RUSH project (From Runup to Overwash), PTDC/CTE-GIX/116814/2010 financed by FCT.pt_PT
dc.description.sponsorshipProvided by PTCRIS: 116814
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doihttps://doi.org/10.2112/SI65-132.1
dc.identifier.issn0749-0208
dc.identifier.otherWOS:000337995500133
dc.identifier.other2-s2.0-84883816851
dc.identifier.otherP-008-E0K
dc.identifier.slugcv-prod-81831
dc.identifier.urihttp://hdl.handle.net/10400.1/12779
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherCoastal Education and Research Foundation (CERF)pt_PT
dc.relationHYDRALAB IV More than water; dealing with the complex interaction of water with environmental elements, sediment, structures and ice
dc.relationRUSH - From runup to overwash
dc.relation.ispartofJournal of Coastal Researchen_US
dc.relation.publisherversionhttps://www.jcronline.org/doi/abs/10.2112/SI65-132.1?journalCode=coaspt_PT
dc.subjectRunuppt_PT
dc.subjectStormpt_PT
dc.subjectBARDEXpt_PT
dc.subjectCoastal hazardspt_PT
dc.titleOverwash experiment on a sandy barrierpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleHYDRALAB IV More than water; dealing with the complex interaction of water with environmental elements, sediment, structures and ice
oaire.awardTitleRUSH - From runup to overwash
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/261520/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCTE-GIX%2F116814%2F2010/PT
oaire.citation.endPage783pt_PT
oaire.citation.issuesp1pt_PT
oaire.citation.startPage778pt_PT
oaire.citation.titleJournal of Coastal Research -Special Issue-pt_PT
oaire.citation.volume65pt_PT
oaire.fundingStreamFP7
oaire.fundingStream3599-PPCDT
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/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.cv.cienciaid2811-D7C1-1DE2 | Ana Matias
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication3561d2b7-54a3-4ca9-a7c7-97014749414a
relation.isAuthorOfPublication.latestForDiscovery3561d2b7-54a3-4ca9-a7c7-97014749414a
relation.isProjectOfPublication23fc556b-bf73-4c38-8d7e-e99b9c78cd90
relation.isProjectOfPublicationb32407f9-d18b-4a04-9692-edd0d54d1734
relation.isProjectOfPublication.latestForDiscovery23fc556b-bf73-4c38-8d7e-e99b9c78cd90

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Matias_et_al_2013_JCR.pdf
Size:
456.49 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
3.49 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIM2-Artigos (em revistas ou actas indexadas)