Activity concentration of Fukushima-derived radiocesium in the western subarctic area of the North Pacific Ocean in summer 2017

Abstract Vertical profiles of radiocesium ( 134 Cs and 137 Cs) were measured in the western subarctic area of the North Pacific in 2017. The highest concentration of 134 Cs, which was derived from the accident of the Fukushima Dai-ichi Nuclear Power Plant in 2011, was 0.14 Bq m −3 (or 1.19 Bq m −3 a...

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Bibliographic Details
Published in:Journal of Radioanalytical and Nuclear Chemistry
Main Authors: Kumamoto, Yuichiro, Aoyama, Michio, Hamajima, Yasunori, Murata, Akihiko
Other Authors: the Ministry of Education, Culture, Sports, Science and Technology of Japan
Format: Article in Journal/Newspaper
Language:English
Published: Springer Science and Business Media LLC 2020
Subjects:
Health, Toxicology and Mutagenesis
Public Health, Environmental and Occupational Health
Spectroscopy
Pollution
Radiology Nuclear Medicine and imaging
Nuclear Energy and Engineering
Analytical Chemistry
Fukushima
Pacific
Subarctic
Online Access:http://dx.doi.org/10.1007/s10967-020-07203-8
https://link.springer.com/content/pdf/10.1007/s10967-020-07203-8.pdf
https://link.springer.com/article/10.1007/s10967-020-07203-8/fulltext.html
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Summary:Abstract Vertical profiles of radiocesium ( 134 Cs and 137 Cs) were measured in the western subarctic area of the North Pacific in 2017. The highest concentration of 134 Cs, which was derived from the accident of the Fukushima Dai-ichi Nuclear Power Plant in 2011, was 0.14 Bq m −3 (or 1.19 Bq m −3 after the decay correction to the accident date). Although the vertical inventory of 134 Cs decreased between 2014 and 2017, the inventory in 2017 was larger than that expected. That was probably arose from the return of some portion of the high-concentration water mass along with the anticlockwise subarctic gyre current.

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