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Title: Mapping near-inertial variability in the SE Bay of Biscay from HF radar data and two offshore moored buoys
Authors: Rubio, A.; Reverdin, G.; Fontan, A.; Gonzalez, M.; Mader, J.
Abstract: HF radar surface current data together with data from two operational offshore oceanographic buoys located over the slope are used to map the variability associated with the near-inertial waves, during a target year (2009), in the SE Bay of Biscay. The results obtained show the complex 4D distribution of inertial oscillations in this area. We find a very pronounced horizontal structure across the area with ranges of a factor 5 in near-inertial kinetic energy. This pattern presents also strong seasonal variability, with a peak in KE closer to the shelf-break in summer, whereas winter maximum is weaker and located further to the north-east. The mooring data indicate more trapping near the surface in summer. These patterns are discussed in relation to the known seasonal differences in atmospheric/buoyancy forcing and the characteristics of the sub-inertial surface velocity field. Citation: Rubio, A., G. Reverdin, A. Fontan, M. Gonzalez, and J. Mader (2011), Mapping near-inertial variability in the SE Bay of Biscay from HF radar data and two offshore moored buoys, Geophys. Res. Lett., 38, L19607, doi: 10.1029/2011GL048783.
Issue Date: 2011
Type: Article
Language: English
DOI: 10.1029/2011GL048783
ISSN: 0094-8276
E-ISSN: 1944-8007
Appears in Publication types:Artículos científicos

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