瀬戸内海表面水中の<SUP>228</SUP>Ra

• 大久保 隆

  神戸商船大学原子動力学科

書誌事項

タイトル別名

• 228Ra in surface water of the Seto Inland Sea.

抄録

The concentrations of ²²⁸Ra in surface waters of the Seto Inland Sea were determined. Surface waters from the central region of the Seto Inland Sea, Hiuchi Nada and Bingo Nada, contained concentrations of ²²⁸Ra of 655-811 dpm/1000 l which were 100times higher than those obtained in the Pacific Ocean. These high concentrations of ²²⁸Ra must be supported by a ²²⁸Ra flux from the bottom sediment. The lower limit of this flux was estimated to be more than 0.16 dpm cm^-2y^-1 The ²²⁸Ra concentrations decreased markedly from central regions of the Seto Inland Sea to about 18dpm/1000 l in the Kii and the Bungo Channels as salinity increased. Using a box model and the ²²⁸Ra data, the mean residence time of sea water in the Seto Inland Sea with respect to the exchange with the open ocean water was estimated to be less than 10 y, and the most probable value is the orderof several years.

収録刊行物

• 日本海洋学会誌

  日本海洋学会誌 37 (5), 279-286, 1981

  日本海洋学会

キーワード

• Oceanography
• General Earth and Planetary Sciences
• Earth-Surface Processes
• General Engineering
• Soil Science
• General Environmental Science

詳細情報

• CRID: 1390001206565876864
• NII論文ID: 30018375459
• NII論文ID: 130004053449
• DOI: 10.1007/bf02070582
• ISSN: 21863113
• ISSN: 1573868X
• ISSN: 00298131
• Web Site: http://link.springer.com/content/pdf/10.1007/BF02070582.pdf
• Web Site: http://link.springer.com/article/10.1007/BF02070582/fulltext.html
• Web Site: http://link.springer.com/content/pdf/10.1007/BF02070582
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可