Wind-Wave Characterization in a Wind-Jet Region: The Ebro Delta Case

Journal of Marine Science and Engineering

Manel Grifoll¹  Agustín Sánchez-Arcilla¹  Laura Ràfols¹  Elena Pallares¹  Manuel Espino¹  Manel Bravo²  Abdel Sairouní² 

[1] Laboratori d’Enginyeria Marítima, Universitat Politècnica de Catalunya - BarcelonaTech (UPC), C/Jordi Girona 1-3 Edif. D1, 08034 Barcelona, Spain;Servei Meteorològic de Catalunya (SMC), C/Berlin 38-48 4a, 08029 Barcelona, Spain;

关键词: waves;    bimodal spectra;    directional spreading;    HF radar;    Ebro Delta;   

DOI  :  10.3390/jmse5010012

来源: DOAJ

【 摘 要 】

This manuscript describes the wind-wave generation, development and fading in a complex area: a wind-jet region. The study region is the offshore Ebro Delta (NW Mediterranean Sea) where strong cross-shelf winds occur due to a topographic channelization. This leads to relatively short-fetch conditions, which interact with the swell component. The third-generation wave model Simulating WAves Nearshore (SWAN) is implemented and fed by high-resolution wind fields. A combination of buoy and High Frequency (HF) radar data is used for model validation, resulting in a reasonable level of agreement. The numerical results characterize the wind-wave evolution during a wind jet. A bimodal spectrum is observed due to the interaction of swell and sea systems. The wave directional spreading exhibits lower values at the wind-jet axis. Finally, a reliability analysis of the wave data from an HF radar deployed at the region is carried out.

【 授权许可】

Unknown