Consulta: subjectFacets:"Littoral drift"
Registros recuperados: 3
Data/hora: 01/06/2024 00:56:09

Modélisation morphodynamique d'une embouchure tidale : Application aux Passes d'entrée du Bassin d'Arcachon
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cayocca, Florence.
The Arcachon tidal inlet exhibits a particularly active morphology due to strong tidal currents and rough wave conditions. During the past 300 years, maximum and minimum extents of the Cap Ferret sand spit have resulted in a difference of 8 km while two channels have alternatively allowed circulation between the lagoon and the ocean.   A bidimensional horizontal morphodynarnic model was developed in order to simulate the system evolution under tidal forcing alone or under combined tide and wave action. Modelling at a scale of decades requires the definition of mean annual wave and tide conditions which are representative with respect to sediment transport. Medium term results thus give general trends of evolution. Driven by these average conditions and...
Tipo: Text
Palavras-chave: Littoral drift; Sediment transport; Tide; Waves; Arcachon lagoon; Tidal inlet; Modelling; Morphodynamic; Dérive littorale; Transport sédimentaire; Marée; Houle; Bassin d'Arcachon; Modèle; Morphodynamique.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/1996/these-4520.pdf

Patterns of sediment dispersion coastwise the State of Bahia - Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: BITTENCOURT,ABÍLIO CARLOS DA SILVA PINTO; DOMINGUEZ,JOSÉ MARIA LANDIM; MARTIN,LOUIS; SILVA,IRACEMA REIMÃO.
Using the average directions of the main wave-fronts which approach the coast of Bahia State - coinciding with that of the main wind occurring in the area - and of their periods, we define a wave climate model based on the construction of refraction diagrams. The resulting model of sediment transport was able to reproduce, in a general way, the sediment dispersion patterns furnished by geomorphic indicators of the littoral drift. These dispersion patterns control the generation of different types of sediment accumulations and of coastal stretches under erosion. We demonstrate that the presence of the Abrolhos and Corumbaú Point coral reefs is an important factor controlling the sediment dispersion patterns, since them act as a large protection against the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Littoral drift; Wave refraction; Numerical modelling; State of Bahia; Brazil.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000200012

A significant longshore transport divergence zone at the Northeastern Brazilian coast: implications on coastal Quaternary evolution
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: BITTENCOURT,ABÍLIO C.S.P.; MARTIN,LOUIS; DOMINGUEZ,JOSÉ M.L.; SILVA,IRACEMA R.; SOUSA,DAIANA L.
By using the mean directions of the wave-fronts approaching the Brazilian northeastern coastal stretch comprised between the localities of Real river (Sergipe State) and Galinhos (Rio Grande do Norte State) - coincident with those of the main winds occurring in the area - and their periods, we have defined a wave climate model based on the construction of refraction diagrams. The resulting model of sediment transport, as obtained by numerical modelling from the refraction diagrams, taking into consideration the angle of approach and waves heights along the 10-m isobath, was capable of reproducing the patterns of sediment dispersion provided by geomorphic indicators of the longshore drift. All this coastal region, approximately 900 km in length, is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Littoral drift; Wave refraction; Numerical modelling; Coastal Quaternary evolution; Northeastern Brazilian coast.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000300012