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Limitation of SAR Quasi-Linear Inversion Data on Swell Climate: An Example of Global Crossing Swells ArchiMer
Jiang, Haoyu; Mouche, Alexis; Wang, He; Babanin, Alexander V.; Chapron, Bertrand; Chen, Ge.
Numerical wave models are powerful tools for investigating global wave climate. Here a global wave hindcast is employed to estimate the global pattern of crossing swells. However, the global patterns of crossing swells derived from the model are different from those derived from the synthetic aperture radar (SAR) wave mode products of quasi-linear inversion, indicating one of them is questionable. The comparison shows that the first two most energetic swells inversed by SAR are often not in accordance with the first two most energetic swells in the model, and this will have a large impact on the statistics of the data. Before this problem is solved, SAR wave products of quasi-linear inversion should be treated with care in wave climate studies.
Tipo: Text Palavras-chave: Synthetic aperture radar; Quasi-linear inversion; Crossing swells; Wave climate.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00369/47979/48003.pdf
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Wave groupiness and spectral bandwidth as relevant parameters for the performance assessment of wave energy converters ArchiMer
Saulnier, Jean-baptiste; Clement, Alain; Falcao, Antonio F. De O.; Pontes, Teresa; Prevosto, Marc; Ricci, Pierpaolo.
To date the estimation of long-term wave energy production at a given deployment site has commonly been limited to a consideration of the significant wave height H, and mean energy period T. This paper addresses the sensitivity of power production from wave energy converters to the wave groupiness and spectral bandwidth of sea states. Linear and non-linear systems are implemented to simulate the response of converters equipped with realistic power take-off devices in real sea states. It is shown in particular that, when the converters are not much sensitive to wave directionality, the bandwidth characteristic is appropriate to complete the set of overall wave parameters describing the sea state for the purpose of estimating wave energy production. (C) 2010...
Tipo: Text Palavras-chave: Wave groupiness; Spectral bandwidth; Sea states; Wave climate; Wave energy; Wave energy converters.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00031/14178/11467.pdf
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