An Estimate of the Vertical Diffusivity of the Deep Water

• TSUNOGAI Shizuo

  Department of Chemistry, Faculty of Fisheries, Hokkaido University

Bibliographic Information

Other Title

• 深層水の鉛直渦動拡散係数の見積り
• シンソウスイ ノ エンチョク カドウ カクサン ケイスウ ノ ミツモリ

Abstract

A simple advection-diffusion model is applied to the deep water of the North Pacific Ocean. The physical mixing parameter, i.e., the ratio of vertical advection velocity (W) to vertical eddy diffusivity (D), is obtained from the vertical distribution of a conservative property such as salinity. The rate of decomposition of organic matter is estimated from the oxygen consumption rate which is obtained from dissolved oxygen content. The calcium carbonate flux in the deep water is obtained from alkalinity. Using these values and the vertical distribution of a radioisotope, ¹⁴C or²²⁶Ra, the vertical eddy diffusivity and the upwelling velocity are found to be 1.2cm²/sec and 1.4×10^-5cm/sec, respectively, at the Geosecs 1969 station. The oxygen consumption rate at 3km depth of the station is found to be 1.4×10^-3ml/l/yr.

Journal

• Journal of the Oceanographical Society of Japan

  Journal of the Oceanographical Society of Japan 28 (4), 145-152, 1972

  The Oceanographic Society of Japan

Keywords

• Oceanography

Details

• CRID: 1390001206564509440
• NII Article ID: 40018218658
• NII Article ID: 10019292219
• NII Article ID: 130003849061
• NII Book ID: AN00354918
• DOI: 10.1007/bf02108758
• ISSN: 21863113
• ISSN: 1573868X
• ISSN: 00298131
• ISSN: 09168370
• NDL BIB ID: 7604317
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7604317
• Web Site: http://link.springer.com/content/pdf/10.1007/BF02108758.pdf
• Web Site: http://link.springer.com/article/10.1007/BF02108758/fulltext.html
• Web Site: http://link.springer.com/content/pdf/10.1007/BF02108758
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• Abstract License Flag: Disallowed