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Título

Evidence of sediment resuspension by island trapped waves

Autor Jordi, Antoni ; Basterretxea, Gotzon ; Wang, Dong Ping
Fecha de publicación 2009
EditorAmerican Geophysical Union
Citación Geophysical Research Letteres 36(18): L18610 (2009)
ResumenSix months of current and acoustic backscatter data from an acoustic Doppler current profiler (ADCP) moored in the shelf off Mallorca (Balearic Islands, Mediterranean Sea) were analyzed. The presence of island trapped waves (ITWs) was determined by correspondence of energetic subinertial peaks in the alongshore current spectra with theoretical wave modes. Although currents in this area averaged 0.06 m/s and rarely exceeded 0.5 m/s, an intense episode with currents larger than 1 m/s was observed between March 8 and 11, 2007. Our analysis demonstrates that ITWs generated by local wind forcing were responsible for such currents, causing significant sediment resuspension on those days. It is suggested that even moderate wind pulses can induce important resuspension along the shelf by generating ITWs. This could be an overlooked mechanism of coupling between atmospheric and shelf circulation with significant implications for sediment dynamics and biogeochemical cycles. Copyright 2009 by the American Geophysical Union.
Versión del editorhttp://dx.doi.org/10.1029/2009GL040055
URI http://hdl.handle.net/10261/87453
DOI10.1029/2009GL040055
Identificadoresdoi: 10.1029/2009GL040055
issn: 0094-8276
Aparece en las colecciones: (IMEDEA) Artículos
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