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Scientific mission cartography more than:
An international team of scientists has mapped 3. Furthermore, 350 radioactive waste barrels, immersed at the bottom of the Northeast Atlantic, without seeing for the moment of abnormal radioactivity, they told Brest in Brest on Friday.
AFP
Led on board the Atalante, the French oceanographic fleet, this expedition called Nodssum aimed to map the main immersion area of thousands of radioactive waste barrels, immersed by European countries between 1946 and 1993.
AFP
These immersions were considered at the time as a normal solution for managing waste from the nuclear industry.
The mission explored a specific area located in international waters. 1000 km southwest of Brest, a coastal city in western France, and 650 km northwest of Coruke, in northwestern Spain.
The researchers were able to scrutinize the area thanks to the Sonar with very high resolution of the Autonomous submersible Ulyx of the French Research Institute for the exploitation of the sea (Ifremer). which carried out its first scientific mission on this scientific mission cartography more than occasion.
By making 16 dives, Ulyx was able to map 3,350 barrels over 163 km2.
AFP
About fifty barrels were photographed in a variable state of conservation, with a corroded surface and colonized by anemones. Lefits of unknown matter, probably bitumen, have also been noted on certain barrels.
The radiation protection measures have reported values of the same level as environmental background noise. But more laboratory measurements on sediments, water and fish must be made in the coming months.
During the mission, scientists have indeed taken sediment samples scientific mission cartography more than using carotiers, but also water thanks to rosettes. They finally installed fish and crustaceans traps to assess the effect of this radioactive waste on marine organizations.
AFP
The team of scientists included researchers from the French National Center for Scientific Research (CNRS) and the French Institute for Research for Development (IRD) and others from the University of Bergen (Norway), Thunen Institute (Germany) and the Memorial University of Newfoundland (Canada).
Until 1993. more than 200,000 barrels filled with radioactive waste was thrown by several European states in the Abyssal scientific mission cartography more than Plaine of the North-East Atlantic Ocean, in international waters, more than 4,000 meters deep.
In June 1984. CEA and Ifremer had already carried out a photographic campaign on the same immersion area in the North Atlantic, 4,500 meters deep: six containers had been photographed and seemed intact, but with corrosion marks.
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