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Abstract:

As a contribution to the UNDP/GEF project 'Environmental Protection of the Río de la Plata and its Maritime Front', the three-dimensional primitive equation Hamburg Shelf Ocean Model is being implemented for forecasting purposes. As a first step a study of the tidal propagation was done. Data for the estuary were gained through a set of three one-way nested models. Simulations were started with a large-scale model covering the Argentinean and Uruguayan and part of the Brazilian continental shelves. This model provides boundary conditions to a smaller scale model of the Río de la Plata and adjacent continental shelf, which in turn is used to force a small-scale high-resolution model of the Río de la Plata estuary. Model sensitivity to different boundary conditions and to model parameters was investigated. Solutions are not sensitive to the two different boundary conditions tested, derived from global data assimilating models. It results also not sensitive to lateral diffusion but to bottom friction. M2 tidal wave propagates northwards as a Kelvin wave, with amplitudes reaching almost 4 m in Southern Patagonia and a few centimeters at the Río de la Plata estuary. Simulation results for the M2 component propagation were validated using all tidal gauge data available and several currents observations, resulting in a very good agreement. These simulations have permitted, therefore, the construction of more reliable model derived cotidal, corange and tidal currents charts. The non-linear transfer of energy from semidiurnal to higher order harmonics was mapped. It can reach very high values at some locations of the Patagonian coast. Tidal energy dissipation derived from the simulations shows that it constitutes an important amount of the globally estimated one.

Registro:

Documento: Artículo
Título:A set of 3-D nested models for tidal propagation from the argentinean continental shelf to the Río de la Plata estuary - Part I. M2
Autor:Simionato, C.G.; Dragani, W.; Nuñez, M.; Engel, M.
Filiación:Ctro. Invest. del Mar Y la Atmosfera, Argentina
Depto. Cie. Atmosfera Y Los Oceanos, FCEN, Universidad de Buenos Aires, Argentina
Servicio de Hidrografía Naval, Argentina
Consejo Nac. de Invest. Cie. Y Tec., Argentina
Institut für Meereskunde (IfM), Universität Hamburg, Germany
Ctro. Invest. del Mar Y la Atmosfera, Ciudad Universitaria, Pab. II, (1424) Cd. Auton. de Buenos Aires, Argentina
Palabras clave:56.5-23.5° S; 69.5-45.5° W; Argentinean Continental Shelf; Estuaries; Models; Patagonian Shelf; Río de la Plata; Tidal currents; Tides; boundary condition; continental shelf; estuarine dynamics; numerical model; tidal current; Rio de la Plata; South America; Western Hemisphere; World
Año:2004
Volumen:20
Número:3
Página de inicio:893
Página de fin:912
Título revista:Journal of Coastal Research
Título revista abreviado:J. Coast. Res.
ISSN:07490208
CODEN:JCRSE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07490208_v20_n3_p893_Simionato

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Citas:

---------- APA ----------
Simionato, C.G., Dragani, W., Nuñez, M. & Engel, M. (2004) . A set of 3-D nested models for tidal propagation from the argentinean continental shelf to the Río de la Plata estuary - Part I. M2. Journal of Coastal Research, 20(3), 893-912.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07490208_v20_n3_p893_Simionato [ ]
---------- CHICAGO ----------
Simionato, C.G., Dragani, W., Nuñez, M., Engel, M. "A set of 3-D nested models for tidal propagation from the argentinean continental shelf to the Río de la Plata estuary - Part I. M2" . Journal of Coastal Research 20, no. 3 (2004) : 893-912.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07490208_v20_n3_p893_Simionato [ ]
---------- MLA ----------
Simionato, C.G., Dragani, W., Nuñez, M., Engel, M. "A set of 3-D nested models for tidal propagation from the argentinean continental shelf to the Río de la Plata estuary - Part I. M2" . Journal of Coastal Research, vol. 20, no. 3, 2004, pp. 893-912.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07490208_v20_n3_p893_Simionato [ ]
---------- VANCOUVER ----------
Simionato, C.G., Dragani, W., Nuñez, M., Engel, M. A set of 3-D nested models for tidal propagation from the argentinean continental shelf to the Río de la Plata estuary - Part I. M2. J. Coast. Res. 2004;20(3):893-912.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07490208_v20_n3_p893_Simionato [ ]