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Short-time scale coupling between termohaline and meteorological forcing in the Ría de Pontevedra


Pardo, PC and Gilcoto, M and Perez, FF, Short-time scale coupling between termohaline and meteorological forcing in the Ria de Pontevedra, Scientia Marina, 65, (Sup 1) pp. 229-240. ISSN 0214-8358 (2001) [Refereed Article]

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Copyright 2001 Editorial CSIC

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Two cruises were performed in May-June and October-November 1997 in the Ría de Pontevedra under strong downwelling conditions. Temperature and salinity data were recorded in short sampling periods to describe the changes in thermohaline property distribution in a short time scale. In order to obtain the residual fluxes in the Ría, a bi-dimensional non-stationary salt and thermal-energy weight averaged box-model was applied. Outputs from this kinematic model were compared with Upwelling Index, river flow and density gradient, resulting in a good multiple correlation, which proves the strong coupling between thermohaline properties and meteorological variability. Ekman forcing affects the whole area but mainly controls the dynamics of outer zones. The intensity of its effect on the circulation pattern within the Ría depends on the grade of stratification of the water bodies. River flow is more relevant in inner parts. According to estimated spatially averaged velocities, water residence time is lower than two weeks in outer parts of the Ría, and decreases toward the inner zones.

Item Details

Item Type:Refereed Article
Keywords:hydrography, box-model, Ekman transport, Rias Baixas (NW Spain)
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Oceanography not elsewhere classified
Objective Division:Environmental Management
Objective Group:Coastal and estuarine systems and management
Objective Field:Measurement and assessment of estuarine water quality
UTAS Author:Pardo, PC (Dr Paula Conde Pardo)
ID Code:103071
Year Published:2001
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2015-09-17
Last Modified:2015-10-08

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