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Aspects temporels de l' impact de rejets radioactifs effectues en mer, sur les eaux d' une station littorale de la Manche ArchiMer
Fraizier, Albert; Guegueniat, Pierre; Salomon, Jean-claude.
Time-dependent impact of seaward radioactive discharges on waters of one coastal station of the English Channel. The disposai at sea of liquid waste from the nuclear fuel reprocessing plant at La Hague (CEA/Cogema) causes modifications to the radioactivity of marine waters in both space and time. Fluctuations in this radioactivity are controlled by many different parameters; to study these parameters, samples were taken, in particular, from a coastal site situated 5 km from the outlet pipe. The overall impact of these releases on the radioactivity of sea-water depends on various factors, including the amount and frequency of discharges, the hydrodynamic regime of water masses in the region and local meteorological conditions. In order to assess this...
Tipo: Text Palavras-chave: Manche; Eaux littorales; Radioactivité; Transferts; Analyse temporelle; Channel; Coastal waters; Radioactivity; Mass transfer; Time-series analysis.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/publication-541.pdf
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Impact de l'émissaire de Toulon-Est sur les sédiments de la Grande Rade. Aspects granulométriques, chimiques, bactériologiques et toxicologiques ArchiMer
Loarer, Ronan; Arnoux, A.; Bodennec, Guy; Martin, Y.; Pagano, G..
L'étude des apports particulaires de la station d'épuration de Toulon-Est et des polluants qui leur sont associés a permis d'acquérir des informations concernant leur impact sur les fonds de la Grande Rade. Une campagne de prélèvement des sédiments superficiels fait apparaître, à travers la granulométrie, l'analyse des contaminants organiques et métalliques, la caractérisation de la matière organique, la répartition des bactéries d'origine fécale et des tests d'embryotoxicité sur des oursins, une zone d'impact maximal dans le Sud-Ouest du rejet. Celui-ci paraît limité à une distance allant de 500 à 1 500 mètres, avec des maxima entre 250 et 750 mètres, selon les traceurs et la direction envisagée.
Tipo: Text Palavras-chave: Rejets urbains; Sédiments marins; Granulométrie; Radioactivité; Contamination chimique; Toxicité; Oursins.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/00075/18654/16204.pdf
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La qualité du milieu marin littoral normand du Tréport au Mont - Saint - Michel ArchiMer
Grouhel-pellouin, Anne; Etourneau, Claude; Lamort, Laure.
This report presents an evaluation of Normandy's coastal quality. Datas for this evaluation come from chemical, microbial and phytoplanktonic monitoring networks carried out by IFREMER in the marine environment, microbial survey of marine swimming and shellfish collecting areas carried out by DDASS (Health Office), analysis of local sewage treatment systems conduced by SATESE, and surveys of river's water quality carried out by DDE (Equipment Office). Among each area, pollution sources are identified and present or future actions to improve marine water quality are listed according to shellfishing or swimming vocation of these areas.
Tipo: Text Palavras-chave: Normandie; Qualité; Littoral; Réseaux de surveillance; Physico-chimie; Microbiologie; Phytoplancton; Radioactivité; Normandy; Quality; Coastal Area; Monitoring Network; Chemical; Microbiology; Phytoplankton; Radioactivity.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00102/21347/18970.pdf
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