わが国の原子力発電所周辺海域における海産生物，海底土および海水中｀１３７´Ｃｓ濃度の長期傾向

• 高田 和夫

  (財) 海洋生物環境研究所事務局

• 鈴木 譲

  (財) 海洋生物環境研究所事務局

書誌事項

タイトル別名

• Long-term Trends of 137Cs Concentrations in Marine Biota, Sediments and Seawater in the Coastal Seas in the Vicinity of Nuclear Power Plants in Japan
• ワガクニ ノ ゲンシリョク ハツデンショ シュウヘン カイイキ ニ オケル カイサン セイブツ カイテイド オヨビ カイスイチュウ 137Cs ノウド ノ チョウキ ケイコウ

抄録

The results of the long-term trend analyses of the ¹³⁷Cs data obtained during the marine environmental radioactivity monitoring program sponsored by the Ministry of Education, Culture, Sports, Science and Technology and carried out from 1983 to 2000 by the Marine Ecology Research Institute are presented. In 86.8% of the marine biota, 75.6% of the sediments, 100% of the surface seawater and 91.1% of the bottom seawater, a statistically significant decrease of ¹³⁷Cs concentrations was observed. The ¹³⁷Cs concentrations in the bottom seawater and sediments below the depth of 200m decreased more slowly than those above the 200m depth. The ¹³⁷Cs concentrations in the marine biota, surface seawater, and bottom Seawater and sediments above 200m decreased by similar annual rates of 0.039, 0.041, 0.045 and 0.041 year^-1, respectively. Those of the bottom seawater and sediments below the 200m depth (200-500m) decreased by the rates of 0.025 and 0.026 year^-1, respectively. These results suggest that an equilibrium in¹³⁷Cs concentrations in the seawater and sediments, including the marine biota above the 200m depth, is attained both above and below the depth of 200m.

収録刊行物

• 保健物理

  保健物理 38 (2), 128-139, 2003

  日本保健物理学会

キーワード

• ¹³⁷Cs concentration
• long-term trends
• marine biota
• sediments
• surface seawater
• bottom Seawater
• coastal seas
• nuclear power plants in Japan
• radioactivity monitoring

詳細情報

• CRID: 1390001204290590080
• NII論文ID: 110003320193
• NII書誌ID: AN00228458
• DOI: 10.5453/jhps.38.128
• COI: 1:CAS:528:DC%2BD3sXmtFCiu7c%3D
• ISSN: 18847560
• ISSN: 03676110
• ISSN: http://id.crossref.org/issn/03676110
• NDL書誌ID: 6654199
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6654199
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可