Contaminazione nell'Artico: a rischio i prodotti della pesca (17 dicembre)

Nota: dopo mucca pazza, presto pesce pazzo. Le amministrazioni corrotte pensano che sia meglio non dire niente alla gente. "Sicurezza nazionale", dicono. In realtà hanno paura di essere processati, nella migliore delle ipotesi. E così nasce il "progetto genoma", per "spiegarci" che si tratta di problemi ereditari. Quando la bolla della propaganda scoppierà (vedi il documento "Etica delle comunicazioni sociali" del Papa), non sarà mai troppo presto.



High Levels of Nuclear Contamination Found in Russian Arctic
http://www.earthvision.net/ColdFusion/News_Page1.cfm?NewsID=13839&start=1
EarthVision Environmental News

 KINGSTON, RI, December 14, 2000 - Although the thought of "The Arctic" usually brings to mind an icy and desolate expanse that is largely untouched by humans, recent investigations into the Russian Arctic environment may forever dispel this view. According to the work of University of Rhode Island Graduate School of Oceanography chemical oceanographer S. Bradley Moran and a team of US, Canadian and Russian scientists, past nuclear weapons testing has left contamination that might one day even reach waters off the coast of North America.

 The University of Rhode Island announced the research team came to this startling conclusion after studying how radioactivity is transported through rivers and ocean currents in the Russian Arctic. In this study is the intertwined discovery of some of the highest levels of radioactive plutonium ever measured in the marine environment. This contamination was found in the sediments of Chernaya Bay, a former Soviet Union nuclear weapons test site.

 In attempting to determine the effects of radioactive contamination on the food chain in and surrounding Chernaya Bay, the team has warned such high levels could threaten the Russian fishing industry.

 "These questions have a bearing on radioactive plutonium in Arctic marine sediments and the environmental impact of the only recorded detonation of nuclear weapons the Arctic Ocean," said Moran. "They also address an important issue underlying many similar studies of the area: namely, the extent to which the Russian contamination represents a significant source of nuclear contamination for North American off-shore waters."

 In addition to finding plutonium, Moran's research has revealed high levels of radioactive cesium and cobalt as well. Measurements taken of organisms in the sediments indicate that radioactive contamination has spread to the food chain.

 Luckily, water flowing from Chernaya Bay to the Barents Sea is restricted and therefore spreading contamination seems to be limited says the team. However, measurements of sediments in the Barents Sea do indicate the transport of plutonium from Chernaya Bay did occur, probably at the time of the original nuclear tests. Moran and his colleagues are now looking into the possibility of another transport pathway that is bringing plutonium from Chernaya Bay to the central Arctic Ocean.