General Discussion
In reply to the discussion: Fukushima is an ongoing problem [View all]RobertEarl
(13,685 posts)Evidence of airborne depositions
http://www.sciencedaily.com/releases/2011/04/110407121343.htm
""Since the double disaster of the 9.0 magnitude earthquake and tsunami that affected hundreds of thousands of people and seriously damaged the Fukushima Daichi power plant in Japan on 11 March 2011, minute traces of radioactive emissions from Fukushima have spread across the entire Northern Hemisphere. A monitoring network designed to detect signs of nuclear explosions picked up these traces from the stricken power plant. To date, more than 30 radionuclide stations that are part of the International Monitoring System have provided information on the spread of radioactive particles and noble gases from the Fukushima accident.""
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In this report from the DOE, US government, it is described why they test for radioisotopes, where they test, when they test and some test findings. Note the excerpted listing for plutonium found in the mussels that were tested. This finding confirms the idea that plutonium can be passed up the food chain to the starfish.
http://www.lm.doe.gov/Amchitka/Sites.aspx
Title: Department of Energy: Biological Monitoring at Amchitka Appears to Show Impacts from Fukushima Dai-ichi Incident.
The U.S. Department of Energy Office Legacy Management (LM) has a long-term stewardship mission to protect human health and the environment from the legacy of underground nuclear testing conducted at Amchitka Island, Alaska, from 1965 to 1971.
Atmospheric monitoring in the United States showed elevated cesium activities shortly after the nuclear incident. LM scientists anticipated that atmospheric transport of cesium would potentially increase the cesium activities in the 2011 biological samples collected near Amchitka. Because cesium-134 has a relatively short half-life of 2 years and indicates leakage from a nuclear reactor, it is a clear indicator of a recent nuclear accident.
Because the Amchitka 2011 sampling event occurred soon after the Fukushima nuclear accident, the biota impacted by atmospheric precipitation showed the greatest impact (e.g., species that live in freshwater or shallow ocean waters) when compared to marine biota living in deeper water. This is because ocean currents are a slower transport process than wind currents. LM scientists anticipate that the marine biota will show the impacts of Fukushima during the next sampling event, currently scheduled to occur in 2016.
(One snip from report about the amounts found pg 226 of pdf)
* Plutonium-239 4.194 pCi/kg Horse Mussel tissue