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Calculation of artificial radionuclides in the ocean by an ocean general circulation model

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Abstract

The concentrations of three artificial radionuclides (90Sr, 137Cs and 239+240Pu) introduced into seawaters from global fallout were simulated from 1957 to 1994 by using an ocean general circulation model. The distributions of the calculated 137Cs and 90Sr concentrations were in good agreement with the observed concentrations. The vertical distribution of the calculated 239+240Pu concentration in the South Pacific also agreed with the observed data. However, the calculated 239+240Pu concentrations in the North Pacific water columns were significantly underestimated in comparison with the observed data, which strongly suggests the presence of additional sources of plutonium input to the North Pacific.

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Authors and Affiliations

  1. Environmental Science Department, Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko-shi, Chiba-ken, 277-1194, Japan

    D. Tsumune, K. Maruyama & N. Nakashiki

  2. Geochemical Research Department, Meteorological Research Institute, 1-1 Nagamine, Tsukuba-shi, Ibaraki-ken, 305-0052, Japan

    M. Aoyama & K. Hirose

Authors
  1. D. Tsumune
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  2. M. Aoyama
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  3. K. Hirose
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  4. K. Maruyama
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  5. N. Nakashiki
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Tsumune, D., Aoyama, M., Hirose, K. et al. Calculation of artificial radionuclides in the ocean by an ocean general circulation model. Journal of Radioanalytical and Nuclear Chemistry 248, 777–783 (2001). https://doi.org/10.1023/A:1010665300905

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  • DOI: https://doi.org/10.1023/A:1010665300905

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