Data/hora: 01/06/2024 08:38:38

Provedor de dados: | 5
País: | France
Título: | On the effect of tidal flats on the hydrodynamics of the Tagus estuary
Autores: | Fortunato, Ab; Oliveira, A; Baptista, Am.
Data: | 1999-01
Ano: | 1999
Palavras-chave: | Estran; Propagation de marée; Modèle numérique; Estuaire du Tage; Tidal flats; Tidal propagation; Numerical model; Tagus estuary.
Resumo: | The effects of tidal flats on the hydrodynamics of the Tagus estuary are analysed using an accurate high-resolution shallow water model, supported by field data. Tidal flats act mainly as energy filters, rather than sinks, transferring energy from astronomic to non-linear frequencies. They also play a major role in determining the strong resonance mode that amplifies semi-diurnal constituents. We show that the upper estuary, with extensive tidal flats, has an increasing accretion rate. This "filling-up" results from a positive feedback between sediment deposition and the hydrodynamics: accretion in the upper estuary lengthens the duration of ebbs, decreasing sediment flushing and further increasing accretion.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00325/43626/43257.pdf

DOI:10.1016/S0399-1784(99)80030-9

http://archimer.ifremer.fr/doc/00325/43626/

Editor: | Gauthier-villars/editions Elsevier
Formato: | application/pdf
Fonte: | Oceanologica Acta (0399-1784) (Gauthier-villars/editions Elsevier), 1999-01 , Vol. 22 , N. 1 , P. 31-44

Fonte:

Elsevier. Paris / Ifremer / Cnrs / Ird

info:eu-repo/semantics/openAccess

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