Journal
ACTA OCEANOLOGICA SINICA
Volume 38, Issue 1, Pages 32-37Publisher
SPRINGER
DOI: 10.1007/s13131-018-1145-0
Keywords
Bohai Sea; summer circulation; baroclinic current; wave-tide-circulation coupled model
Categories
Funding
- National Key Research and Development Program of China [2017YFA0604101, 2016YFB0201103, 2017YFA0604104, 2016YFC0503602, 2016YFC1401403, 2017YFC1404000]
- China Ocean Mineral Resources RAMP
- D Association program [DY135-E2-1-06]
- National Basic Research Program (973 Program) of China [2014CB745004]
- Ocean Forecast System project of the China-ASEAN Maritime Coopeartion Fund
- Strategic Priority Research Program of Chinese Academy of Sciences [XDA11020301]
- National Natural Science Foundation of China [41206025]
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The Bohai Sea is a shallow semi-enclosed inner sea with an average depth of 18 m and is located at the west of the northern Yellow Sea. The climatological circulation pattern in summer of the Bohai Sea is studied by using a wave-tide-circulation coupled model. The simulated temperature and the circulation agree with the observation well. The result shows that the circulation pattern of the Bohai Sea is jointly influenced by the tidal residual current, wind and baroclinic current. There exists an obvious density current along the temperature front from the west part of the Liaodong Bay to the offshore area of the Huanghe Estuary. In the Liaodong Bay there exists a clockwise gyre in the area north to the 40 degrees N. While in the area south to the 40 degrees N the circulation shows a two-gyre structure, the flow from the offshore area of the Huanghe Estuary to the Liaodong Bay splits into two branches in the area between 39 degrees N and 40 degrees N. The west branch turns into north-west and forms an anti-clockwise gyre with the south-westward density current off the west of the Liaodong Bay. The east branch turns to the east and forms a clockwise gyre with the flow along the east coast of the Liaodong Bay. The forming mechanism of the circulation is also discussed in this paper.
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