14C levels in the vicinity of the Fukushima Dai-ichi Nuclear Power Plant prior to the 2011 accident
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- 作者：Sheng Xua ; b ; sheng.xu@glasgow.ac.uk" class="auth_mail" title="E-mail the corresponding author ; Gordon T. Cooka ; Alan J. Cresswella ; b ; Elaine Dunbara ; Stewart P.H.T. Freemana ; Helen Hastiea ; Xiaolin Houc ; Piotr Jacobssona ; Philip Naysmitha ; David C.W. Sandersona ; Brian G. Tripneya ; Katsuhiko Yamaguchib
- 关键词：Cryptomeria japonica tree ring ; Cellulose ; Anthropogenic 14C ; Fukushima nuclear reactors
- 刊名：Journal of Environmental Radioactivity
- 出版年：2016
- 出版时间：June 2016
- 年：2016
- 卷：157
- 期：Complete
- 页码：90-96
- 全文大小：786 K
文摘
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The 14C variation in 1971–1976 and 2011–2014 is ascribed as an exponential decline.
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The 14C discharge from FDNPP normal operation caused 14C enrichment in 1977–2010.
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Total 53 TBq 14C were released during the whole period of the normal operations.
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No visible accident 14C pulse was observed in the year 2011 ring in Okuma.
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Additional dose from discharged 14C to the public is negligible.