Extreme Sea Conditions in Shallow Water: Estimations Based on In-Situ Measurements

• Published in: Volume 8: Ocean Renewable Energy
• Main Authors: Le Crom, Izan, Perignon, Yves, Saulnier, Jean-Baptiste, Berhault, Christian
• Other Authors: Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2013
• Subjects: [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]; Arctic
• Online Access: https://hal.science/hal-01157616; https://hal.science/hal-01157616/document; https://hal.science/hal-01157616/file/LeCrom2013.pdf; https://doi.org/10.1115/OMAE2013-10752

International audience This paper focuses on the assessment of the environmental extreme conditions in term of wind and waves at the SEMREV wave energy test site for application in the design of Marine Renewable Energy (MRE) devices and components. The paper will first present the existing in situ wind and wave measurements. A prediction chain from global to regional scales, and based on a regional wave model calibrated at the SEMREV location, is then described. It enables to build a specific 22 year hindcast dataset for the test site. Long term extrapolation is finally achieved at the SEMREV location using existing methodologies for deep water conditions. Long term extrapolations methods are usually very sensitive to the parameterization and configuration of the prediction chain and we demonstrate in this study that the best overall performances are reached by a POT method at this stage of development in the prediction chain.