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Residual circulation and thermohaline distribution of the Ría de Vigo: a 3-D hydrodynamical model
López, S.T.; Varela, G.; Delhez, E. (2001). Residual circulation and thermohaline distribution of the Ría de Vigo: a 3-D hydrodynamical model. Sci. Mar. (Barc.) 65(Suppl. 1): 277-289
In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358; e-ISSN 1886-8134
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| Author keywords |
numerical models; ria de Vigo; upwelling-downwelling; thermohaline distributions; currents |
| Auteurs | | Top |
- López, S.T.
- Varela, G.
- Delhez, E.
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| Abstract |
A three-dimensional, non-linear, baroclinic model is described and tested for the first time to study the residual circulation and the thermohaline distribution of the Ria de Vigo (NW Spain) at short time scales and under different wind stress regimes. Two markedly different realistic scenarios were chosen: northerly upwelling-favourable winds and southerly downwelling-favourable winds. The numerical experiments carried out indicate that the hydrodynamic regime of the Ria de Vigo is mostly a consequence of wind events. As could be expected, moderately strong North winds reinforce the normal (positive) Ria circulation, while winds blowing from the South, when sufficiently strong, reverse the typical circulation pattern and reduce the characteristic outgoing velocities and the flushing time inside the Ria. The temperature and salinity fields generated by the model in both situations were compared with observations and found to be in qualitatively good agreement, supporting the 3D velocity field distribution. |
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