Consulta: subjectFacets:"Eaux côtières"
Registros recuperados: 8
Data/hora: 01/06/2024 09:22:20

Étude par télédétection de la dispersion en mer des eaux estuariennes issues de la Gironde et du Pertuis de Maumusson
Provedor de dados: 5
Autores: Castaing, P; Allen, Gp; Houdart, Michel; Moign, Y.
The objective of this study, carried out in the Gironde estuary inlet, was to determine the nature of the seaward dispersion of estuarine water and suspended sediments during a spring tide and high river flow. On June 3, 19(7, three flights were made over the inlet, at mid ebb, low tide and mid flood. The planned flight at high tide was cancelled due to adverse meteorological conditions. During each flight, thermal infrared coverage was obtained, together with black and white photographs. These data were correlated with concomitant ground mesures of current velocity, salinity, temperature and suspended sediment concentration Four types of water masses were identified during the tidal cycle: estuarine "very warm and turbid" water; estuarine "cooler and...
Tipo: Text
Palavras-chave: Hydrodynamique; Suspensions; Télédétection; Eaux côtières; Estuaire; Gironde; Hydrodynamic; Suspended sediments; Remote sensing; Coastal waters; Estuary; Gironde.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00122/23361/21188.pdf

Campagne de surveillance DCE 2015 en Méditerranée française. Districts « RHONE ET COTIERS MEDITERRANEENS » ET « CORSE »
Provedor de dados: 5
Autores: Witkowski, Fanny; Andral, Bruno; Derolez, Valerie; Tomasino, Corinne.
Sur la façade méditerranéenne, l'Ifremer a assuré en 2015 une partie logistique de la quatrième campagne du contrôle de surveillance DCE et la coordination de la caractérisation de plusieurs éléments de qualité. Les résultats de la quatrième campagne de contrôles de surveillance DCE permettent de caractériser la qualité de 45 masses d’eau littorales suivies en 2015. Dans le district « Rhône et côtiers méditerranéens » (volet 1), 3 des 18 masses d’eau côtières (MEC) sont déclassées pour la chimie au regard des résultats acquis dans la matière vivante, tandis que l'ensemble des MEC suivies pour le phytoplancton affichent un bon état. Dans les masses d’eau de transition (MET), la chimie matière vivante déclasse 7 MET, le suivi dans l'eau (échantillonneurs...
Tipo: Text
Palavras-chave: Surveillance; Phytoplancton; Macrophytes; Substances prioritaires; Bioaccumulation; État biologique; État chimique; Eaux côtières; Eaux de transition.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00394/50583/51272.pdf

Simulation de l'effet sur l’eutrophisation côtière bretonne de 3 scénarios de réduction des teneurs en nitrate et phosphate de chaque bassin versant breton et de la Loire
Provedor de dados: 5
Autores: Dussauze, Morgan; Menesguen, Alain.
This study commissioned by the Région Bretagne and the Agence de l'Eau Loire Bretagne aimed at assessing on a mathematical modelling basis the marine influence of most of watersheds in Brittany, and the impact of 4 scenarios of reduction of the loadings of each of these watersheds on the phytoplanctonic biomass and ulva mass proliferation. The ecological 3D model ECOMARS3D has been applied to a domain containing Brittany (which is also used in an operational mode for putting everyday the 2dayforecasts on the website: http://www.previmer.org/previsions/production_primaire/modele_eco_mars3d_bretagne) and to 6 zooms which enabled a finer representation of coastal waters. This study highlighted the fact that: •a nitrate reduction for any river has no effect on...
Tipo: Text
Palavras-chave: Bretagne; Bassins versants; Eaux côtières; Nitrate; Phosphate; Marée verte; Ulve; Diatomée; Dinoflagellé; Modèle mathématique; Brittany; Watersheds; Coastal waters; Nitrate; Phosphate; Green tide; Ulva; Diatom; Dinoflagellate; Mathematical model.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/00097/20804/18429.pdf

Etude de la matière organique et demande en oxygène des sédiments en baie de vilaine
Provedor de dados: 5
Autores: Merceron, Michel.
After the fish mortality through an anoxia, which occured during the summer of 1982 in the bay of Vilaine, the oxygen consumption of the sediment was investigated during spring and summer. It was found moderately important, submitted to limited evolutions along time and on different zones. A significant correlation with the organic carbon content of sediment could not be established.    The oxygen consumption of the bottom waters was approached. In the bay of Vilaine as a whole, it was found more important than the sediment consumption. It could vary in a wide range, till leading to pronounced hypoxias, especially during phytoplankton. (Not controlled OCR)
Tipo: Text
Palavras-chave: Organic matter; Water oxygen consumption; Sediment oxygen consumption; Anoxia; Dissolved oxygen; Coastal waters; Matière organique; Respiration de la phase liquide; Respiration du sédiment; Anoxie; Oxygène dissous; Eaux côtières.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/rapport-2666.pdf

Bilan 1997 de la contamination des eaux côtières françaises par les composés organostanniques.
Provedor de dados: 5
Autores: Michel, Pierre; Averty, Bernard.
Il y a quinze ans, la France prenait des mesures réglementaires pour restreindre l'usage des composés organostanniques dans les peintures antisalissures utilisées pour la protection des coques de bateaux. Il s'agissait alors d'une réaction d'urgence face au problème vital posé à l'ostréiculture française. La France était le premier pays à prendre de telles dispositions. Depuis, la réglementation a été confirmée à plusieurs reprises, en dernier lieu par le décret n°92-1074 du 2 octobre 1992. Quinze ans plus tard, où en sommes nous ? La campagne de mesure des composés organostanniques dans l'eau de mer, conduite par l'IFREMER de juillet à septembre 1997 a permis de faire le point de la situation. La contamination des côtes françaises reste préoccupante. Pour...
Tipo: Text
Palavras-chave: Composés organostanniques; Tributyl étain; TBT; Peintures antisalissures; Eaux côtières; Organotin compounds; Ributyltin; TBT; Antifouling paints; Coastal waters.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00104/21557/19136.pdf

Mortalites de poissons en baie de Vilaine (Juillet 1982) Causes - Mécanismes - Propositions d'action
Provedor de dados: 5
Autores: Merceron, Michel.
The massive number of fish mortalities that occurred in July of 1982 in Vilaine Bay is due to a very pronounced oxygen depletion in the bay's bottom waters. This loss was caused by the chronic fragility of this area, associated with an abnormal weather pattern. The endemism of partial oxygen depletion has been brought to light. The latter could be economically more significant than the anoxia of 1982. Preventative and warning actions have been proposed.
Tipo: Text
Palavras-chave: Brittany; Dam; Estuary; Meteorological factors; Stratification; Phytoplankton; Oxygen depletion; Coastal waters; Fish kill; Estuaire; Facteurs météorologiques; Stratification; Prolifération planctonique; Déficit en oxygène; Eaux côtières; Mortalité de poisson.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/rapport-2836.pdf

Le mercure, le cadmium et le plomb dans les eaux littorales libanaises: apports et suivi au moyen de bioindicateurs quantitatifs (éponges, bivalves et gastéropodes)
Provedor de dados: 5
Autores: Nakhle, Khaled.
In 1975, the meeting for the protection of the Mediterranean Sea in Barcelona fixed several important objectives. One of them was the creation of National Observation Programs in order to evaluate the levels and tendencies of pollutants. Furthermore the MED-POL program has re-evaluated and developed these objectives. Lebanon has signed the Barcelona Convention and has been engaged in providing data about its coastal water quality. Unfortunately the Lebanese war, which also began in 1975, paralyzed the country for 15 years. Since 1990, successive governments in the country have fixed as an objective the reconstruction of the tourism sector. As a consequence, they became interested in the environmental problems. The studies carried out before or during the...
Tipo: Text
Palavras-chave: Lebanon; Coastal water; D.g.t.; Transplant; Sponge; Patella; Brachidonte; Trace metal; Bioindicator; Liban; Eaux côtières; D.g.t.; Transplant; Eponge; Patelle; Brachidonte; Métal trace; Bioindicateur.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/these-83.pdf

Etude sur les contaminants émergents dans les eaux françaises - Rapport de l'étude prospective sur les contaminants émergents dans les eaux littorales de la métropole et des DOM
Provedor de dados: 5
Autores: Abarnou, Alain; Bocquene, Gilles; Champin, Maryline; Durand, Gaetane; Gonzalez, Jean-louis; Le Moigne, Morgan; Masson, Jean-claude; Priou, Pierre; Tixier, Celine.
This study contributes to inventory programme on emerging pollutants in French waters and to the general reflection which will enable to update the list of relevant substnaces to be included in the new monitoring programmes to come. This work concerns the coastal part of the inventory programme on marine waters and sediments of France and five overseas french departments (OFD). In this goal, passive sampling techniques and direct extraction techniques have been tested through the implementation of in situ systems integrators POCIS (Polar Organic Chemical Integrative Sampler) and the extraction by SBSE bars (Stir bar sorptive extraction) directly in the waters sampled. Finally, analyzes of sediment completed the acquisition of data. Arount 40 stations were...
Tipo: Text
Palavras-chave: Eaux littorales; Eaux côtières; Sédiment; Métropole; DOM; Pollution; Substances chimiques; POCIS; SBSE; Coastal waters; Sediment; France; Overseas french departments; Pollution; Chemicals contaminants; POCIS; SBSE.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00259/36994/35483.pdf