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Surfaces de mer et dissipation d'énergie ArchiMer
Veras Guimaraes, Pedro.
Stochastic wave formulations and models are the most common tools for the assessment and forecast of sea surface conditions. Their ability to account for some of the processes encountered by waves during their evolution remains however a central question. Among other processes, the wave dissipation is for instance still poorly quantified and traditional methods for wave measurements fail to proper insight into its physics in a wide range of conditions. In this context, the work presented in this PhD aims to explore available observation techniques for their application to several quantitative aspects of the dissipation of wave energy, and particularly for short wave modulated by strong tidal currents, for short wave modulated by longer waves. This work...
Tipo: Text Palavras-chave: Vagues; Stéréo-vidéo; Bouée dérivante; Modélisation; Interaction vague-courant; Modulation; Déferlement; Breaking; Ocean waves; Stereo video; Drifting buoy; Wave modeling; Wave-current interaction.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00498/60967/64375.pdf
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A surface kinematics buoy (SKIB) for wave–current interaction studies ArchiMer
Veras Guimaraes, Pedro; Ardhuin, Fabrice; Sutherland, Peter; Accensi, Mickael; Hamon, Michel; Perignon, Yves; Thomson, Jim; Benetazzo, Alvise; Ferrant, Pierre.
Global navigation satellite systems (GNSSs) and modern motion-sensor packages allow the measurement of ocean surface waves with low-cost drifters. Drifting along or across current gradients provides unique measurements of wave–current interactions. In this study, we investigate the response of several combinations of GNSS receiver, motion-sensor package and hull design in order to define a prototype “surface kinematics buoy” (SKIB) that is particularly optimized for measuring wave–current interactions, including relatively short wave components that are important for air–sea interactions and remote-sensing applications. The comparison with existing Datawell Directional Waverider and Surface Wave Instrument Float with Tracking (SWIFT) buoys, as well as...
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Ano: 2018 URL: https://archimer.ifremer.fr/doc/00470/58136/60605.pdf
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