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Abstract:

A numerical model (two horizontal dimensions, vertically integrated) is used to investigate the generation of long ocean waves, ranging from 20 min to almost 2 h, at Buenos Aires continental shelf. The domain includes the Río de la Plata estuary and the continental shelf together and extends from 33.5° to 40.5°S latitude, and from 51° to 63°W longitude. Sea-level oscillations are modeled by forcing with passage of atmospheric cold fronts and atmospheric gravity waves. Both forcing mechanisms, which have been present during high activity lapses of long ocean waves, are mathematically implemented. After several numerical simulations, it is concluded that the pressure and wind fields associated to cold fronts do not generate long ocean waves in the area, though they do produce disturbances with periods longer than the tidal ones. On the other hand, it is so concluded that atmospheric gravity waves are an effective mechanism to force long ocean waves. Results obtained show that generation of long ocean waves is highly sensitive depending on the propagation direction and the phase speed of the atmospheric gravity waves. The long ocean wave event detected during the large-amplitude gravity-wave event of 13 October 1985 is successfully simulated. Finally, all our results suggest that atmospheric gravity waves are a highly effective mechanism forcing for the generation of long ocean waves in Buenos Aires coastal waters. © 2006 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Numerical experiments on the generation of long ocean waves in coastal waters of the Buenos Aires province, Argentina
Autor:Dragani, W.C.
Filiación:Servicio de Hidrografía Naval, ESCM-INUN, Av. Montes de Oca 2124, C1270ABV Ciudad Autonoma de BA, Argentina
Departamento Ciencias de la Atmósfera y los Océanos, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Autonoma de Buenos Aires, Argentina
CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, Av. Rivadavia, 1917 Ciudad Autonoma de Buenos Aires, Argentina
Palabras clave:Atmospheric gravity waves; Atmospheric pressure forcing; Buenos Aires continental shelf; Numerical simulations; Shallow water waves; Wind stress forcing; atmospheric forcing; coastal water; cold front; continental shelf; experimental study; gravity wave; numerical method; ocean wave; wave generation; wave propagation; wave velocity; Argentina; Buenos Aires [Argentina]; Rio de la Plata; South America
Año:2007
Volumen:27
Número:5
Página de inicio:699
Página de fin:712
DOI: http://dx.doi.org/10.1016/j.csr.2006.11.009
Título revista:Continental Shelf Research
Título revista abreviado:Cont. Shelf Res.
ISSN:02784343
CODEN:CSHRD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02784343_v27_n5_p699_Dragani

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Citas:

---------- APA ----------
(2007) . Numerical experiments on the generation of long ocean waves in coastal waters of the Buenos Aires province, Argentina. Continental Shelf Research, 27(5), 699-712.
http://dx.doi.org/10.1016/j.csr.2006.11.009
---------- CHICAGO ----------
Dragani, W.C. "Numerical experiments on the generation of long ocean waves in coastal waters of the Buenos Aires province, Argentina" . Continental Shelf Research 27, no. 5 (2007) : 699-712.
http://dx.doi.org/10.1016/j.csr.2006.11.009
---------- MLA ----------
Dragani, W.C. "Numerical experiments on the generation of long ocean waves in coastal waters of the Buenos Aires province, Argentina" . Continental Shelf Research, vol. 27, no. 5, 2007, pp. 699-712.
http://dx.doi.org/10.1016/j.csr.2006.11.009
---------- VANCOUVER ----------
Dragani, W.C. Numerical experiments on the generation of long ocean waves in coastal waters of the Buenos Aires province, Argentina. Cont. Shelf Res. 2007;27(5):699-712.
http://dx.doi.org/10.1016/j.csr.2006.11.009