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Detection of Fukushima-derived radionuclides in seawater, zooplankton, and small fish off Japan

 

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Atmosphere and Ocean Research Institute
2012/04/05

Fig. Concentrations of 137Cs in surface water (Bq L-1 = 103Bq m-3). Yellow circle indicates location of Fukushima NPPs.

Fig. Concentrations of 137Cs in surface water (Bq L-1 = 103Bq m-3). Yellow circle indicates location of Fukushima NPPs.

Assistant professor Jun Nishikawa and research fellow Hiroomi Miyamoto of the Atmosphere and Ocean Research Institute, University of Tokyo, were part of an international team of researchers investigating radionuclides in the Pacific Ocean 30-600 km offshore from the Fukushima Dai-ichi nuclear power plants (NPPs). In June 2011, the team detected NPPs-derived 134Cs, 137Cs, and 110mAg from seawater, zooplankton, euphausiids (shrimp-like crustaceans), jellyfish, and micronektonic fishes.

The results of this research appear in the April 2 online edition of the journal Proceedings of the National Academy of Sciences of the United States of America (PNAS).

Press release

Paper

Buesseler, K. O., S. R. Jayne, N. S. Fisher, I. I. Rypina, H. Baumann, Z. Baumann, C. F. Breier, E. M. Douglass, J. George, A. M. Macdonald, H. Miyamoto, J. Nishikawa, S. M. Pike, and S. Yoshida,
“Fukushima-derived radionuclides in the ocean and biota off Japan”,
PNAS April 2, 2012 doi: 10.1073/pnas.1120794109.
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Atmosphere and Ocean Research Institute

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