Fukushima-derived radiocesium in the northwestern Pacific Ocean in February 2012

  • Kumamoto Y
  • Murata A
  • Kawano T
 et al. 
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We measured radiocesium (134Cs and137Cs) in seawaters collected at stations in the northwestern Pacific Ocean in February 2012. Activity concentration of Fukushima-derived radiocesium was highest in the transition area between the subarctic and subtropical regions, which was due to the direct discharge. The direct discharged radiocesium was transported southwardly across the Kuroshio Extension along isopycnal mixing. More than 80% of the Fukushima-derived radiocesium at stations both in the transition area and subtropical region was derived from the direct discharge. © 2013 Elsevier Ltd.

Author-supplied keywords

  • 134Cs
  • 137Cs
  • The Fukushima Dai-ichi nuclear power plant
  • The northwestern Pacific Ocean

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  • Yuichiro Kumamoto

  • Akihiko Murata

  • Takeshi Kawano

  • Michio Aoyama

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