Data/hora: 15/06/2024 18:18:17

Provedor de dados: 	5	
País: 	France	
Título: 	A surface kinematics buoy (SKIB) for wave–current interaction studies	
Autores: 	Veras Guimaraes, Pedro; Ardhuin, Fabrice; Sutherland, Peter; Accensi, Mickael; Hamon, Michel; Perignon, Yves; Thomson, Jim; Benetazzo, Alvise; Ferrant, Pierre.	
Data: 	2018-11	
Ano: 	2018	
Resumo: 	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 stereo-video imagery, demonstrates the performance of SKIB. The use of low-cost accelerometers and a spherical ribbed and skirted hull design provides acceptable heave spectra E(f) from 0.09 to 1 Hz with an acceleration noise level (2πf)4E(f) close to 0.023 m2 s−3. 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.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00470/58136/60605.pdf

https://archimer.ifremer.fr/doc/00470/58136/60606.pdf

DOI:10.5194/os-14-1449-2018

https://archimer.ifremer.fr/doc/00470/58136/	
Editor: 	Copernicus Gesellschaft Mbh	
Formato: 	application/pdf	
Fonte: 	Ocean Science (1812-0784) (Copernicus Gesellschaft Mbh), 2018-11 , Vol. 14 , N. 6 , P. 1449-1460	
Fonte: 	info:eu-repo/semantics/openAccess

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