Anthropogenic radionuclides in the Japan Sea: their distributions and transport processes

Journal of Environmental Radioactivity
T ItoY N Volkov

Abstract

The anthropogenic radionuclides, (90)Sr, (137)Cs and (239+240)Pu, were measured in the water column of the Japan Sea/East Sea during 1997-2000. The vertical profiles of radionuclide concentrations showed: exponential decrease with depth for (90)Sr and (137)Cs, and surface minimum/subsurface maximum for (239+240)Pu. These results do not differ substantially from results reported previously. The area-averaged concentrations of radionuclides in the Japan Sea are higher than those found in the Northwest Pacific Ocean below surface layer showing the accumulation of the radionuclides in the deep waters in the Japan Sea. Concerning spatial distributions, the area of high (137)Cs inventory extends from the Japan Basin into the Yamato Basin. It is suggested that wintertime convection of water, occurring mainly in the Japan Basin, causes the radionuclides to sink. The nuclides then advect into the Yamato Basin after detouring around the Yamato Rise.

References

Nov 24, 1999·The Science of the Total Environment·Y IkeuchiN K Veletova
Oct 24, 2000·Journal of Cancer Research and Clinical Oncology·M WeinmannM Bamberg

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Citations

Aug 29, 2012·Radiation Protection Dosimetry·Branko PetrinecDijana Pavicic-Hamer
Oct 11, 2011·Journal of Environmental Radioactivity·Mutsuo InoueMasayoshi Yamamoto
Sep 28, 2010·The Science of the Total Environment·Masatoshi Yamada, Jian Zheng
Apr 9, 2013·Earth and Planetary Science Letters·Aya SakaguchiMasayoshi Yamamoto
May 31, 2020·Scientific Reports·Junwen WuJiang Sun
Jan 6, 2021·The Science of the Total Environment·Fule ZhangJinzhou Du
Feb 7, 2018·Journal of Environmental Radioactivity·Jakub KaizerPavel P Povinec
Feb 15, 2020·Journal of Environmental Radioactivity·Katsumi Hirose, Pavel P Povinec

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