Wind-Induced Resuspension and Transport of Contaminated Sediment from the Rove Canal into the Etang De Berre, France
The present study concerns the erosion and transport of severely contaminated sediments in a Canal. It begins in the context of an engineering project aimed to re-introduce a forced convection at the entrance of this Canal by pumping marine water. The local wind is often strong enough to overpass th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/1/62 |
| _version_ | 1797497053307207680 |
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| author | Elena Alekseenko Bernard Roux Konstantin Kuznetsov |
| author_facet | Elena Alekseenko Bernard Roux Konstantin Kuznetsov |
| author_sort | Elena Alekseenko |
| collection | DOAJ |
| description | The present study concerns the erosion and transport of severely contaminated sediments in a Canal. It begins in the context of an engineering project aimed to re-introduce a forced convection at the entrance of this Canal by pumping marine water. The local wind is often strong enough to overpass the resuspension threshold; thus, there is a serious risk of downstream contamination of a Mediterranean lagoon. So, the goal is to evaluate this risk as a function of the pumping rate; this contamination is transported by the fine suspended particles. Different scenarios are investigated to determine the downstream transport of suspensions in terms of runoff. These scenarios (of 24 h) contains a succession of 3 periods: constant wind speed, wind slowdown and calm, for two opposite wind directions. Special attention is devoted to the modeling of complex mechanisms of erosion and resuspension during wind periods, deposition during windless periods and sediment consolidation. The main results concern the total flux of the suspended particles through the exit of the Canal at the confluence with the lagoon. It is shown that even for moderate runoff (<6 m<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>3</mn></msup></semantics></math></inline-formula>/s) this total flux is large enough, not only during the wind period, but also after several hours of calm. |
| first_indexed | 2024-03-10T03:12:58Z |
| format | Article |
| id | doaj.art-ff3eb83827824adf9ef1f1030b0519cc |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T03:12:58Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-ff3eb83827824adf9ef1f1030b0519cc2023-11-23T12:32:16ZengMDPI AGWater2073-44412021-12-011416210.3390/w14010062Wind-Induced Resuspension and Transport of Contaminated Sediment from the Rove Canal into the Etang De Berre, FranceElena Alekseenko0Bernard Roux1Konstantin Kuznetsov2Shirshov Institute of Oceanology, Russian Academy of Sciences, Nakhimovsky Prospekt 36, 117997 Moscow, RussiaCentrale Marseille, CNRS, Aix-Marseille Université, M2P2 UMR 7340, 13451 Marseille, FranceÉcole des Ponts ParisTech, 6-8 Avenue Blaise-Pascal, Cité Descartes, 77455 Champs-sur-Marne, FranceThe present study concerns the erosion and transport of severely contaminated sediments in a Canal. It begins in the context of an engineering project aimed to re-introduce a forced convection at the entrance of this Canal by pumping marine water. The local wind is often strong enough to overpass the resuspension threshold; thus, there is a serious risk of downstream contamination of a Mediterranean lagoon. So, the goal is to evaluate this risk as a function of the pumping rate; this contamination is transported by the fine suspended particles. Different scenarios are investigated to determine the downstream transport of suspensions in terms of runoff. These scenarios (of 24 h) contains a succession of 3 periods: constant wind speed, wind slowdown and calm, for two opposite wind directions. Special attention is devoted to the modeling of complex mechanisms of erosion and resuspension during wind periods, deposition during windless periods and sediment consolidation. The main results concern the total flux of the suspended particles through the exit of the Canal at the confluence with the lagoon. It is shown that even for moderate runoff (<6 m<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>3</mn></msup></semantics></math></inline-formula>/s) this total flux is large enough, not only during the wind period, but also after several hours of calm.https://www.mdpi.com/2073-4441/14/1/62mediterranean canalmediterranean lagoonrove canalhydrodynamicsnumerical modellingbottom shear stress |
| spellingShingle | Elena Alekseenko Bernard Roux Konstantin Kuznetsov Wind-Induced Resuspension and Transport of Contaminated Sediment from the Rove Canal into the Etang De Berre, France Water mediterranean canal mediterranean lagoon rove canal hydrodynamics numerical modelling bottom shear stress |
| title | Wind-Induced Resuspension and Transport of Contaminated Sediment from the Rove Canal into the Etang De Berre, France |
| title_full | Wind-Induced Resuspension and Transport of Contaminated Sediment from the Rove Canal into the Etang De Berre, France |
| title_fullStr | Wind-Induced Resuspension and Transport of Contaminated Sediment from the Rove Canal into the Etang De Berre, France |
| title_full_unstemmed | Wind-Induced Resuspension and Transport of Contaminated Sediment from the Rove Canal into the Etang De Berre, France |
| title_short | Wind-Induced Resuspension and Transport of Contaminated Sediment from the Rove Canal into the Etang De Berre, France |
| title_sort | wind induced resuspension and transport of contaminated sediment from the rove canal into the etang de berre france |
| topic | mediterranean canal mediterranean lagoon rove canal hydrodynamics numerical modelling bottom shear stress |
| url | https://www.mdpi.com/2073-4441/14/1/62 |
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