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| Duffa, Celine; Dufois, Francois; Coudray, Sylvain. |
| As part of its development of post-accident management tools, the French Institute for Radiological Protection and Nuclear Safety is setting up a model to simulate radionuclide dispersion in the Toulon marine area (one of France's main military ports). The model is based on the MARS 3D code developed by IFREMER. It reproduces hydro-sedimentation phenomena in the Bay of Toulon with a horizontal spatial resolution of 100 m and 30 vertical sigma levels and also factors in radioactive decay and dissolved/particulate distribution of the radionuclides studied. With no tide, the major currents in this area are generated by the wind. The model effectively reproduces the resulting hydrodynamic phenomena, which were measured throughout the summer of 2009 in the... |
| Tipo: Text |
Palavras-chave: Bay of Toulon; Radionuclides; Dispersion; MARS. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00053/16465/15998.pdf |
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| Muller, Heloise; Pineau-guillou, Lucia; Idier, Deborah; Ardhuin, Fabrice. |
| Storm surge modeling and forecast are the key issues for coastal risk early warning systems. As a general objective, this study aims at improving high-frequency storm surge variations modeling within the PREVIMER system (www.previmer.org), along the French Atlantic and English Channel coasts. The paper focuses on (1) sea surface drag parameterization and (2) uncertainties induced by the meteorological data quality. The modeling is based on the shallow-water version of the model for applications at regional scale (MARS), with a 2-km spatial resolution. The model computes together tide and surge, allowing properly taking into account tide-surge interactions. To select the most appropriate parameterization for the study area, a sensitivity analysis on sea... |
| Tipo: Text |
Palavras-chave: Storm surge; MARS; Sea surface drag; Meteorological forcing. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00219/32982/31404.pdf |
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| Muller, Heloise; Dumas, Franck; Blanke, Bruno; Mariette, Vincent. |
| This study was aimed at modeling, as realistically as possible, the dynamics and thermodynamics of the Iroise Sea by using the Model for Applications at Regional Scale (MARS), a regional ocean 3D model. The horizontal resolution of the configuration in use is 2 km with 30 vertical levels. The 3D model of the Iroise Sea is embedded in a larger model providing open boundary conditions. As regards the atmospheric forcing, the originality of this study is to force the regional ocean model with the high-resolution (6 km) regional meteorological model, Weather Research and Forecasting (WRF). In addition, as the air surface temperature is highly sensitive to the sea surface temperature (SST), this regional meteorological model is improved by taking into account a... |
| Tipo: Text |
Palavras-chave: High frequency radar data; WRF; MARS; Iroise Sea. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3518.pdf |
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| Heyraud, Catherine. |
| Les performances du modèle communautaire CROCO sont évaluées grâce à un jeu de données in-situ complet (courant, hauteur d’eau, température, salinité) et comparées à celles du modèle MARS-3D. Il apparaît que les modèles ont un comportement hydro-dynamique proche avec des divergences liées au coeur numérique de CROCO (schéma temporel, schéma d’advection). A ce stade, ces divergences n’apparaissent pas discriminantes pour CROCO. |
| Tipo: Text |
Palavras-chave: CROCO; MARS; Hydrodynamique; Validation. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00470/58158/60657.pdf |
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| Bougeard, Morgane; Le Saux, Jean-claude; Perenne, Nicolas; Le Guyader, Soizick; Pommepuy, Monique. |
| During rainstorms, watersheds can introduce large amounts of faecal pollution into the rivers and sea, leading to shellfish contamination. In this study, we assessed Escherichia coli fluxes from a catchment, and their impact on estuarine water quality, using two assembled models. For the catchment, the agro-hydrological model SWAT was implemented integrating land uses, soil, topography, rainfall and other climatic data on Daoulas watershed (France). Initially, the SWAT model was calibrated and validated for river flow rates, and results were found satisfactory. Subsequently, different faecal contamination sources were integrated into the model: point sources (WWTP discharges into rivers) and non-point sources (manure spreading on fields). During rainfall... |
| Tipo: Text |
Palavras-chave: Modeling; SWAT; MARS; E. coli; Shellfish; Catchment; Estuary. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00066/17748/15270.pdf |
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| Simon, Guillaume; Dumas, Franck; Duhaut, Thomas. |
| The 1D version of the Model for Applications at Regional Scale is used to parameterize the effects of sea surface waves in 2D in a horizontally homogeneous offshore zone of the Iroise sea. Here we present the first simulation of the Iroise sea including sea surface waves forcing, and more generally, the first study of a boundary layer including the Hasselmann force with a tidal wave. We use a single equation turbulence closure based on a non-local diagnosis for energetic and dissipation length scales. The turbulent energy flux at the surface due to whitecaps and the Hasselmann force induced by Stokes drift are assessed using the whole sea surface waves spectrum given by the Wave Watch Third generation model. The ability of the parameterization to reproduce... |
| Tipo: Text |
Palavras-chave: Ocean turbulence; Waves; Stokes drift; Iroise sea; MARS; High-frequency radar; OSCR. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00053/16467/14087.pdf |
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