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Phosphate vs. Silicate Discontinuity Layer Developed at Mid-Depth in the East Sea
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  • Journal title : Ocean and Polar Research
  • Volume 32, Issue 3,  2010, pp.331-336
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2010.32.3.331
 Title & Authors
Phosphate vs. Silicate Discontinuity Layer Developed at Mid-Depth in the East Sea
Kim, Bong-Guk; Lee, Tong-Sup; Kim, Il-Nam;
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 Abstract
The CREAMS (Circulation Research of the East Asian Marginal Sea) survey in 1999 revealed a sharp mid-depth discontinuity of the phosphate:silicate ratio in all basins of the East/Japan Sea. Incidentally, this discontinuity layer corresponds to the oxygen minimum layer. Directly below the discontinuity layer, oxygen concentration is increased. This increase in oxygen concentration is interpreted as a proof of intermediate water formation. Oxygen minimum indicates that the water parcel is old and stable against mixing. So it seems be an efficient barrier to vertical exchange of materials. This means that, once materials enter the lower domain, they rarely return to the upper domain. Therefore, the biogeochemistry of the East/Japan Sea depends heavily on material input through the Korea Strait, and flux is expected to be sensitive to the climate change. As a result, the East/Japan Sea ecosystem seems vulnerable to tipping (regime shift), which occurred on a decadal time scale.
 Keywords
intermediate water;nutrients discontinuity;biogeochemistry;
 Language
Korean
 Cited by
1.
동해 남부 해역의 수괴 분포와 용존 무기 및 유기 영양염의 분포 특성: 2011년 9월 관측자료를 중심으로,권형규;오석진;박미옥;양한섭;

한국해양환경ㆍ에너지학회지, 2014. vol.17. 2, pp.90-103 crossref(new window)
1.
Distribution of Water Masses and Distribution Characteristics of Dissolved Inorganic and Organic Nutrients in the Southern Part of the East Sea of Korea: Focus on the Observed Data in September, 2011, Journal of the Korean Society for Marine Environment & Energy, 2014, 17, 2, 90  crossref(new windwow)
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