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Título

Submesoscale, tidally-induced biogeochemical patterns in the Strait of Gibraltar

AutorRamírez-Romero, Eduardo CSIC ORCID ; Macías, Diego CSIC ORCID; Bruno, Miguel; Reyes, E.; Navarro, Gabriel CSIC ORCID ; García, Carlos M.
Palabras claveAlboran Sea
Strait of Gibraltar
Tidal mixing
Interval waves
Water masses
Biogeochemical patterns
Fecha de publicación10-abr-2012
EditorElsevier
CitaciónEstuarine Coastal and Shelf Science 101: 24-32 (2012)
ResumenTidal forcing and its fortnightly variation are known to be one of the main regulating agents of physical and biogeochemical signatures in the Strait of Gibraltar and surrounding areas. Samples obtained during spring and neap tides in the region were analyzed to determine the influence of this tidal variation on the submesoscale distribution of water masses and biological elements. During spring tides, strong and intermittent mixing processes between Mediterranean and Atlantic waters occur in the vicinity of the Camarinal Sill together with an eastward advection of those mixed waters into the Alboran Sea. Furthermore, the intense suction of surface coastal waters into the main channel of the strait was detected as chlorophyll patches in the Alboran Sea during spring tides. In contrast, the most characteristic phenomenon during neap tides was the arrival of pulses of relatively nutrient-rich North Atlantic Central Waters to the surface regions of the Alboran Sea. In addition, traces of the suction of coastal waters were observed for the first time during neap tides. Therefore, our results show that submesoscale processes are crucial in the dynamics of the Strait of Gibraltar, and they must be considered for the correct description of the biogeochemical features of Alboran Sea, especially during an inactive period of the coastal upwelling.
Versión del editorhttp://dx.doi.org/10.1016/j.ecss.2012.02.010
URIhttp://hdl.handle.net/10261/55655
DOI10.1016/j.ecss.2012.02.010
ISSN0272-7714
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