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| Marion, C.; Dufois, Francois; Arnaud, Mireille; Vella, C.. |
| The environment is impacted by natural and anthropogenic disturbances that occur at different spatial and temporal scales, and that lead to major changes and even disequilibria when exceeding the resiliency capacities of the ecosystem. With an annual mean flow of 1700 m(3) s(-1), the Rhone River is the largest of the western Mediterranean basin. Its annual solid discharges vary between 2 and 20 Mt, with flood events responsible for more than 70% of these amounts. In the marine coastal area, close to the mouth, both flocculation and aggregation lead to the formation of fine-grained deposits, i.e. the prodelta. This area is characterized by sediment accumulation rates up to 20-50 cm yr(-1) and high accumulations of particle reactive contaminants such as... |
| Tipo: Text |
Palavras-chave: Sediment dynamics; Floods; Hydrodynamics; Radiotracers; Rhone River prodelta. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00006/11695/8479.pdf |
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| Gregoire, G.; Méar, Y.; Poizot, E.; Marion, C.; Murat, A.; Hebert, B.. |
| Because of its size and geographical position, the Cherbourg roadstead appears as a favourable site for Marine Renewable Energy (MRE) industry. As a result, Cherbourg harbour has undergone profound changes (2015 and 2016) due to the installation of industrial infrastructures to service the needs of expanding MRE further offshore. However, little is known about the morpho-sedimentary distribution and associated dynamics of seabed sediments before and after harbour transformations. This study focuses on sedimentary dynamics using detailed morphological and sedimentological analyses based on data acquired before changes (2012). The main map includes a unique bathymetric map (1:35,000) and sedimentary maps showing the percentage of the characteristic grain... |
| Tipo: Text |
Palavras-chave: Morphology; Sedimentology; Morphodynamic; Granulometry; Bathymetry; Cherbourg roadstead. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00515/62638/67005.pdf |
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