Journal cover Journal topic
Ocean Science An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/os-2018-45
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
11 Jun 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Ocean Science (OS).
A Surface KInematics Buoy (SKIB) for wave-current interactions studies
Pedro Veras Guimarães1,2, Fabrice Ardhuin1, Peter Sutherland1, Mickael Accensi1, Michel Hamon1, Yves Pérignon2, Jim Thomson3, Alvise Benetazzo4, and Pierre Ferrant2 1Ifremer, Laboratoire, d'Océanographie Physique et Spatiale (LOPS), IUEM, Brest, France
2LHEEA lab – UMR6598, Ecole Centrale de Nantes
3Applied Physics Lab, University of Washington, US
4ISMAR, Venezia, Italy
Abstract. Global Navigation Satellite Systems (GNSS) 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 kinematic buoy (SKIB) that is particularly optimized for measuring wave-current interactions, including relatively short wave components (relative frequency around 1 Hz) that are important for air-sea interactions and remote sensing applications. The comparison with existing Datawell Directional Waverider and SWIFT buoys, as well as stereo-video imagery demonstrates the accuracy of SKIB. The use of low-cost accelerometers and a spherical ribbed and skirted hull design provide acceptable heave spectra, while velocity estimates from GNSS receivers yield a mean direction and directional spread. Using a low-power acquisition board allows autonomous deployments over several months with data transmitted by satellite. The capability to measure current-induced wave variations is illustrated with data acquired in a macro-tidal coastal environment.
Citation: Veras Guimarães, P., Ardhuin, F., Sutherland, P., Accensi, M., Hamon, M., Pérignon, Y., Thomson, J., Benetazzo, A., and Ferrant, P.: A Surface KInematics Buoy (SKIB) for wave-current interactions studies, Ocean Sci. Discuss., https://doi.org/10.5194/os-2018-45, in review, 2018.
Pedro Veras Guimarães et al.
Pedro Veras Guimarães et al.
Pedro Veras Guimarães et al.

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