Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/114724
Título: Observations of the interaction between near-inertial waves and mesoscale eddies
Autores/as: Martínez Marrero, Antonio 
Sangrá Inciarte, Pablo 
Caldeira, R.
Aguiar González, B.
Rodríguez Santana, Ángel 
Clasificación UNESCO: 2510 Oceanografía
251007 Oceanografía física
Fecha de publicación: 2014
Conferencia: IV Congress of Marine Sciences 
Resumen: Trajectories of drifters dragged at 50-100 meters depth and current meter data from a mooring are used to analyse the interaction between near-inertial waves and mesoscale eddies. Drifters were deployed within eddies generated downstream of Canary and Madeira islands between 1998 and 2011 (Sangra et al., 2005; Caldeira et al., 2014). The mooring was installed in the passage of cyclonic eddies induced by Gran Canaria island during 2006 (Piedeleu et al., 2009). Rotatory wavelet analysis of Lagrangian velocities shows a clear relationship between the near-inertial waves’ intrinsic frequencies and the eddy angular velocities. The results reveal that near-inertial waves reach a minimum frequency of half the planetary vorticity (f/2) in anticyclonic eddies rotating with its maximum absolute angular speed. The highest amplitudes of the observed inertial motions are found in the inner core of young anticyclonic eddies evidencing strong trapping of inertial waves. Finally, the analysis of the current meter series show frequency fluctuations of the near-inertial currents in the upper 500 meters that are related to the passage of cyclonic eddies. These fluctuations appear to be consistent with the variation of the background vorticity produced by the eddies.
URI: http://hdl.handle.net/10553/114724
ISBN: 84-697-0471-0
Fuente: Book of Abstracts submitted to the IV Congress of Marine Sciences. Las Palmas de Gran Canaria, June 11th to 13th 2014, p. 418
Colección:Póster de congreso
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