Impact of Fukushima-derived radiocesium in the western North Pacific Ocean

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Impact of Fukushima-derived radiocesium in the western North Pacific Ocean
Anonymous Coward User ID: 65934160 Japan 12/11/2014 01:49 AM Report Abusive Post Report Copyright Violation	Impact of Fukushima-derived radiocesium in the western North Pacific Ocean Impact of Fukushima-derived radiocesium in the western North Pacific Ocean about ten months after the Fukushima Dai-ichi nuclear power plant accident Abstract We measured vertical distributions of radiocesium (134Cs and 137Cs) at stations along the 149°E meridian in the western North Pacific during winter 2012, about ten months after the Fukushima Dai-ichi Nuclear Power Plant (FNPP1) accident. The Fukushima-derived 134Cs activity concentration and water-column inventory were largest in the transition region between 35 and 40°N approximately due to the directed discharge of the contaminated water from the FNPP1. The bomb-derived 137Cs activity concentration just before the FNPP1 accident was derived from the excess 137Cs activity concentration relative to the 134Cs activity concentration. The water-column inventory of the bomb-derived 137Cs was largest in the subtropical region south of 35°N, which implies that the Fukushima-derived 134Cs will also be transported from the transition region to the subtropical region in the coming decades. Mean values of the water-column inventories decay-corrected for the Fukushima-derived 134Cs and the bomb-derived 137Cs were estimated to be 1020 ± 80 and 820 ± 120 Bq m−2, respectively, suggesting that in winter 2012 the impact of the FNPP1 accident in the western North Pacific Ocean was nearly the same as that of nuclear weapons testing. Relationship between the water-column inventory and the activity concentration in surface water for the radiocesium is essential information for future evaluation of the total amount of Fukushima-derived radiocesium released into the North Pacific Ocean. This is coming in a free and open Access for you, you and you at: [link to www.sciencedirect.com]

Eleven-15 User ID: 65958513 United States 12/11/2014 07:58 AM Report Abusive Post Report Copyright Violation	Re: Impact of Fukushima-derived radiocesium in the western North Pacific Ocean Anyone who has read GLP for any period of time has acquired good knowledge mixed in with the 99% noise. The trick is learning to filter out the noise. Quote from Anonymous Coward (AC)
Anonymous Coward (OP) User ID: 65934160 Japan 12/12/2014 02:36 AM Report Abusive Post Report Copyright Violation	Re: Impact of Fukushima-derived radiocesium in the western North Pacific Ocean Need to be seen: Diluted Fukushima Radioactivity Becomes an Ocean Tracer, Providing New Insights into Ocean Circulation Canadian Ocean Monitoring Program As part of the overall Canadian response, Fisheries and Oceans Canada embarked on a monitoring program to track the movement of Fukushima radioactivity across the Pacific to the eastern North Pacific and Arctic Oceans Established by researchers Dr. John N. Smith of the Bedford Institute of Oceanography and Robin Brown of the Institute of Ocean Sciences, the monitoring revealed some interesting findings, including the observation that the radioactivity moved more quickly than projected. “Despite the Fukushima incident, measurements of radioactive cesium in ocean water are well below levels that could harmfully affect the environment,” says Smith. “Our interest is in using the cesium as a tracer to learn more about ocean circulation and to test the ocean transport models that were used to predict where the radioactivity will go.” Read the whole Report at: [link to www.dfo-mpo.gc.ca] It is "Up to Date"
Anonymous Coward (OP) User ID: 65934160 Japan 12/12/2014 02:56 AM Report Abusive Post Report Copyright Violation	Re: Impact of Fukushima-derived radiocesium in the western North Pacific Ocean [link to youtu.be] The concerned People should watch it, it is highly Informative!

Anonymous Coward User ID: 23444215 Spain 11/03/2015 08:58 AM Report Abusive Post Report Copyright Violation	Re: Impact of Fukushima-derived radiocesium in the western North Pacific Ocean Radiocesium contamination of cetaceans stranded along the coast of Hokkaido, Japan, and an estimation of their travel routes ABSTRACT: We analyzed radiocesium (134Cs and 137Cs) levels in the muscle tissue of several odontocetes and mysticetes stranded on the coast of Hokkaido (the northernmost island of Japan) in 2011 and 2012, fol- lowing the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident in March 2011. Since most of the radiocesium from the FDNPP was released into the western North Pacific Ocean and carried eastward from the Japan coast, there was little radiocesium con- tamination in the seawater around Hokkaido. Hokka- ido is surrounded by the North Pacific Ocean, the Japan Sea, and the Okhotsk Sea, but radiocesium was predominantly detected in the cetaceans stranded along the North Pacific coast between June and Octo- ber 2011. Among the stranded cetaceans, which in- cluded the Pacific white-sided dolphin, harbour por- poise and Dall’s porpoise (odontocetes) as well as the common minke whale and humpback whale (mysti- cetes), the highest level of contamination was found in a common minke whale. The radiocesium contamina- tion of these cetaceans suggests that they moved sea- sonally from the south of Hokkaido, particularly through the contaminated area of the western North Pacific Ocean. The radiocesium levels in the tissues of these animals is likely a result of the contamination level of the seawater along their travel route, rather than their trophic level, because of the sudden changes in radiocesium transport and diffusion in seawater that occurred in 2011. [link to www.int-res.com] Informativo and fresco.
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