Analyses of laboratory wave records including extreme crests, based on the continuous wavelet transform, are reported. The analyses have provided further insight into the spectral characteristics of these extreme events. During the period of the extreme wave crest, spectral levels over all frequencies are substantially elevated by comparison with average spectrum for the complete wave record. This was also observed in a similar analysis of the famous New Year wave event that occurred at the Draupner platform. The analyses also indicate that nonlinear effects are active during the crest event, second-order effects being particular strong and indicating phase-locking of high frequency waves to freely-propagating waves with frequencies close to the spectral peak. These nonlinear effects appear to be strong only in the vicinity of the extreme.
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ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
June 15–20, 2008
Estoril, Portugal
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4819-7
PROCEEDINGS PAPER
Wavelet Analysis of an Extreme Wave in a Model Basin Available to Purchase
Kevin Ewans,
Kevin Ewans
Shell International Exploration and Production, Rijswijk, The Netherlands
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Bas Buchner
Bas Buchner
MARIN - Maritime Research Institute Netherlands, Wageningen, The Netherlands
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Kevin Ewans
Shell International Exploration and Production, Rijswijk, The Netherlands
Bas Buchner
MARIN - Maritime Research Institute Netherlands, Wageningen, The Netherlands
Paper No:
OMAE2008-57499, pp. 455-464; 10 pages
Published Online:
July 27, 2009
Citation
Ewans, K, & Buchner, B. "Wavelet Analysis of an Extreme Wave in a Model Basin." Proceedings of the ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. Volume 2: Structures, Safety and Reliability. Estoril, Portugal. June 15–20, 2008. pp. 455-464. ASME. https://doi.org/10.1115/OMAE2008-57499
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