論文

査読有り
2013年1月

Concentration of iodine-129 in surface seawater at subarctic and subtropical circulations in the Japan Sea

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
  • Takashi Suzuki
  • ,
  • Shigeyoshi Otosaka
  • ,
  • Orihiko Togawa

294
開始ページ
563
終了ページ
567
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.nimb.2012.08.035
出版者・発行元
ELSEVIER SCIENCE BV

To investigate the migration of anthropogenic I-129 in the environment, we measured I-129 concentrations at both subarctic (above 40 degrees N) and subtropical (below 40 degrees N) circulations in the surface seawater of the Japan Sea. The averaged concentrations of stations 193, 194, 201, 206 and 210 above 200 m were (2.1 +/- 0.3) x 10(10) atoms/m(3), (2.0 +/- 0.2) x 10(10) atoms/m(3), (1.6 +/- 0.3) x 10(10) atoms/m(3), (1.4 +/- 0.3) x atoms/m(3) and (1.7 +/- 0.3) x 10(10) atoms/m(3), respectively. The averaged concentration at the subarctic circulation in the Japan Sea above 200 m (1.9 x 10(10) atoms/m(3)) was higher than that in the subtropical circulation (1.5 x 10(10) atoms/m(3)). This latitudinal distribution pattern of I-129 is not consistent with those of bomb-derived radionuclides such as C-14, Sr-90 and Cs-137. Taking into account latitudinal location and the total amount of releases from reprocessing plants, this discriminating latitudinal distribution of I-129 in the Japan Sea would indicate that a significant amount of I-129 originating from active reprocessing plants in Europe is supplied to the surface of the Japan Sea. (C) 2012 Elsevier B.V. All rights reserved.

Web of Science ® 被引用回数 : 4

リンク情報
DOI
https://doi.org/10.1016/j.nimb.2012.08.035
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000313234300108&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.nimb.2012.08.035
  • ISSN : 0168-583X
  • Web of Science ID : WOS:000313234300108

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