Global warming may have slowed down the deep conveyor belt of a marginal sea of the northwestern Pacific: Japan Sea | Zendy

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Global warming may have slowed down the deep conveyor belt of a marginal sea of the northwestern Pacific: Japan Sea

Author(s) -

Gamo Toshitaka

Publication year - 1999

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/1999gl002341

Subject(s) - abyssal zone , oceanography , sink (geography) , anoxic waters , seawater , bottom water , geology , environmental science , seabed , glacial period , sea level , global warming , climatology , climate change , geography , paleontology , cartography

Weakening of the abyssal circulation (conveyor belt) in the Japan Sea during the 20th century is deduced from the decreasing trend of bottom dissolved oxygen (O 2 ). This trend indicates a shortened O 2 supply, caused by too inactive conveyor belt to compensate for biological O 2 consumption at the bottom of the sea. Recent climatic changes during the winter season in the northern Japan Sea may play a significant role in prohibiting the formation of surface seawater dense enough to sink to the bottom. It is predicted that the Japan Sea bottom water will become anoxic within a few hundred years, as it was in the last glacial maximum.

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