GLOBEX: Wave dynamics on a shallow sloping beach

Abstract : As waves approach the shore, their non-linear dynamics becomes increasingly important. Most of our understanding of wave non-linearity has resulted from theoretical work, laboratory experiments and field studies on beaches slopes steeper than about 1:40. There, very strong non-linear processes happen locally and on a short time scale, as demonstrated by narrow surf zones with plunging or collapsing breakers. The non-linearity on gently-sloping beaches, typical of high-energy dissipative environments, has a different character, as it can build up over a long period of time and along an extensive cross-shore area. This contribution serves to introduce the GLOBEX project, during which a high-resolution (in space and time) data set of the cross-shore evolution of short and infragravity waves was collected on a low-sloping (1:80) non-mobile laboratory beach. As non-linear transfers also occur in the vertical from the free-stream flow downwards into the bottom boundary layer, additional flow measurements performed with Laser Doppler Anemometry are also briefly presented.
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Communication dans un congrès
HYDRALAB IV Joint User Meeting, Lisbon, July 2014, Jul 2014, Lisbonne, Portugal. 2014
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Contributeur : Hervé Michallet <>
Soumis le : mercredi 19 novembre 2014 - 19:37:18
Dernière modification le : jeudi 7 février 2019 - 17:40:59
Document(s) archivé(s) le : vendredi 20 février 2015 - 11:20:27

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Hervé Michallet, B. Gerben Ruessink, Mariana Vieira Lima Matias da Rocha, Anouk De Bakker, Dominic Van Der A, et al.. GLOBEX: Wave dynamics on a shallow sloping beach. HYDRALAB IV Joint User Meeting, Lisbon, July 2014, Jul 2014, Lisbonne, Portugal. 2014. 〈hal-01084718〉

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