Review of recent findings on the water masses and circulation in the East Sea (Sea of Japan) |
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Authors: | Kuh Kim Kyung-Il Chang Dong-Jin Kang Young Ho Kim Jae-Hak Lee |
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Institution: | (1) Research Institute of Oceanography/School of Earth and Environmental Sciences, Seoul National University, Seoul, 151-742, Korea;(2) Climate Change and Coastal Disaster Research Department, Korea Ocean Research and Development Institute, Ansan, 425-600, Korea |
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Abstract: | Recent findings on water masses, biogeochemical tracers, deep currents and basin-scale circulation in the East/Japan Sea,
and numerical modeling of its circulation are reviewed. Warming continues up to 2007 despite an episode of bottom water formation
in the winter of 2000–2001. Water masses have definitely changed since the 1970s and further changes are expected due to the
continuation of warming. Accumulation of current data in deep waters of the East/Japan Sea reveals that the circulation in
the East/Japan Sea is primarily cyclonic with sub-basin scale cyclonic and anticyclonic cells in the Ulleung Basin (Tsushima
Basin). Our understanding of the circulation of intermediate water masses has been deepened through high-resolution numerical
studies, and the implementation of data assimilation has had initial success. However, the East/Japan Sea is unique in terms
of the fine vertical structures of physical and biogeochemical properties of cold water mass measured at the highest precision
and their rapid change with the global warming, so that full understanding of the structures and their change requires in-depth
process studies with continuous monitoring programs. |
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Keywords: | Sea of Japan water mass biogeochemical tracers warming circulation numerical modeling |
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