Two-dimensional modeling of fine sediment transport with mixed sediment and consolidation: Application to the Gironde Estuary, France
| Autor: | Sylvain Orseau, Fabrice Klein, Pablo Tassi, Damien Pham Van Bang, Nicolas Huybrechts |
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| Přispěvatelé: | Centre d'Etudes et d'Expertises sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Equipe-projet HA (Cerema Equipe-projet HA), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Roberval (Roberval), Université de Technologie de Compiègne (UTC), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Equipe-projet HA (Cerema Equipe-projet HA), Laboratoire National d’Hydraulique et Environnement (EDF R&D LNHE), EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Laboratoire d'Hydraulique Saint-Venant / Saint-Venant laboratory for Hydraulics (Saint-Venant), École des Ponts ParisTech (ENPC)-Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema)-EDF R&D (EDF R&D), Centre Eau Terre Environnement [Québec] (INRS - ETE), Institut National de la Recherche Scientifique [Québec] (INRS) |
| Rok vydání: | 2021 |
| Předmět: |
Stratigraphy
0207 environmental engineering 02 engineering and technology 010501 environmental sciences 01 natural sciences Numerical modeling Gironde estuary 14. Life underwater Turbidity [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment 020701 environmental engineering Squat effect 0105 earth and related environmental sciences Hydrology geography geography.geographical_feature_category Consolidation (soil) Discharge [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment Estuary Geology Dimensional modeling Sediment transport Opentelemac Gironde 13. Climate action Environmental science Mixed sediment |
| Zdroj: | International Journal of Sediment Research International Journal of Sediment Research, Elsevier, 2020, ⟨10.1016/j.ijsrc.2019.12.005⟩ |
| ISSN: | 1001-6279 |
| DOI: | 10.1016/j.ijsrc.2019.12.005 |
| Popis: | International audience; In order to optimize ship navigation in the macrotidal Gironde Estuary, a recent project funded by the port of Bordeaux aims at better understand and forecast hydrodynamic and fine sediment transport within the estuary. In the framework of this project, a two-dimensional hydro-sedimentary model is built. The model includes hydrodynamic forcings, mixed-sediment transport, and consolidation processes. The harmonic analysis of the astronomical tides reveals a strong distortion of the tidal wave inducing the growth of overtide constituents and the non-significant effect of tide-surge interactions in annual-scale prediction. Depending on hydrological conditions, river discharge can considerably alter the model accuracy due to the migration of the turbidity maximum zone modifying the bottom roughness. Comparison with measurements shows the ability of the model to reproduce suspended-sediment concentrations in the central Estuary. Sensitivity of the model to sediment features has also been discussed in regard of suspended-sediment concentrations and fluid mud deposits. The model will be further coupled with ship squat predictions and a morphodynamic model.p { margin-bottom: 0.25 cm; line-height: 115%; } |
| Databáze: | OpenAIRE |
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