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Journal of the Oceanographical Society of Japan

, Volume 29, Issue 5, pp 185–192 | Cite as

Regeneration of silicate in the ocean

I. The Japan Sea as a model of closed system
  • Katsutoshi Kido
  • Masakichi Nishimura
Article

Abstract

Regeneration of silicate in the Japan Sea, an example of semi-closed sea, was studied. In the Japan Sea Proper Water the apparent regenerative ratio of the nutrients was determined to be:ΔO ∶ΔC ∶ΔN ∶ΔP ∶ΔSi=−289 ∶(116)∶14.3∶1∶81.

It was assumed that the dissolved silicate present in sea water is grouped into three fractions; 1)preformed silicate of conservative nature, 2)oxidative silicate which dissolves in oxidation process of organisms with consumption of oxygen, and 3)non-oxidative silicate which dissolves without oxygen consumption. The dissolution rate ofnon-oxidative silicate in the Japan Sea Proper Water was estimated to be 0.07μg-at. Si/l/yr from the data ofΔAOU values and assumed rates of oxygen consumption. This dissolution rate ofnon-oxidative silicate agreed with that obtained in the deep Pacific by the vertical advection diffusion model byKido andNishimura (1972).

Keywords

Oxidation Oxygen Japan Oxygen Consumption Advection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© The Oceanographical Society of Japan 1973

Authors and Affiliations

  • Katsutoshi Kido
    • 1
  • Masakichi Nishimura
    • 1
  1. 1.Department of Chemistry, Faculty of FisheriesHokkaido UniversityHakodateJapan

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