Utilisation of numerical and statistical techniques to describe sedimentary circulation patterns in the mouth of the Gironde estuary
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- 作者：Mallet ; Cyril ; Howa ; Hé ; lè ; ne ; Garlan ; Thierry ; Sottolichio ; Aldo ; Le Hir ; Pierre ; et. al.
- 关键词：sediment dynamics ; tidal current ; modelling ; Gironde ; France ; dynamique sé ; dimentaire ; courant de maré ; e ; modé ; lisation ; Gironde ; France
- 刊名：Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science
- 出版年：2000
- 出版时间：October 15, 2000
- 年：2000
- 卷：331
- 期：7
- 页码：491-497
- 全文大小：326 K
文摘
Sediment distribution is well defined in the mouth of the Gironde estuary but the sediment dynamics is still poorly understood. The aim of this work is to analyse residual circulation of non-cohesive sediment due to the action of the main hydrodynamic factor: tidal currents. A depth-averaged numerical model emphasises the residual circulation of the Gironde estuary, which is characterised by residual tidal gyres. The comparison between sediment transport calculated from the numerical model and from a statistical analysis of the sedimentary distribution leads to the definition of a simple scheme of non-cohesive sediment circulation in the Gironde estuary’s mouth.