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Strong currents intensification in the Catalonian coast

AutorEspino, Manuel; López Marco, Jaime; Fernández-Sáinz, Juan; Sánchez-Arcilla, Agustín; Grifoll, Manel; Jordá, Gabriel
Fecha de publicación13-oct-2010
CitaciónEOF2010 - I Encuentro de la Oceanografía Física Española
ResumenKnowledge of coastal currents is essential for shipping, sediment transport, harbour design and understanding of coastal processes such us upwelling. In this work, currents measured with four meteo-marine coastal buoys belonging to the XIOM network [Bolanos et al., ˜ 2008] have been analysed in order to characterise currents in the Catalonian Coast. The northern buoy is settled in the Roses Bay, where the coastline protection prevents the formation of strong currents. Analyses, in the other three buoys have revealed episodes with very intense current velocities (v > 50 cm/s) if compared to mean currents in this area [Castellon et al., ´ 1990]. Similar intensification episodes have been found in the analysis of current data obtained from previous ADCP measurements in the area. As shown by cross-wavelet analysis, the intensification episodes measured in the three buoys appear to be related to wind stress. Coherence analysis will be applied to support and confirm this hypothesis. Thus, the relationship between these episodes and other type of structures such us eddies or filaments [Send et al., 1999], that can be observed offshore with regional forecasting systems such us MFSTEP [Pinardi and Tonani, 2005], could be discarded. To study the origin of these surface currents and to find out their structure during these episodes, wind-forced coastal numerical models are to be used
DescripciónTrabajo presentado en EOF2010, I Encuentro de la Oceanografía Física Española, celebrada del 13 al 15 de octubre de 2010 en Barcelona (España), y organizada por el Centro Mediterráneo de Investigaciones Marinas y Medioambientales del CSIC (ICM-CSIC) y el Laboratorio de Ingeniería Marítima de la Universitat Politécnica de Catalunya (LIM-UPC)
URIhttp://hdl.handle.net/10261/116415
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