| Registro completo |
| Provedor de dados: |
ArchiMer
|
| 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
|
| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
|
|
