Characteristics of water exchange in the Luzon Strait during September 2006 |
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Authors: | Zhou Hui Nan Feng Shi Maochong Zhou Liangming Guo Peifang |
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Affiliation: | [1]Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071 [2]College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China |
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Abstract: | The Luzon Strait is the only deep channel that connects the South China Sea (SCS) with the Pacific. The transport through
the Luzon Strait is an important process influencing the circulation, heat and water budgets of the SCS. Early observations
have suggested that water enters the SCS in winter but water inflow or outflow in summer is quite controversial. On the basis
of hydrographic measurements from CTD along 120° E in the Luzon Strait during the period from September 18 to 20 in 2006,
the characteristics of temperature, salinity and density distributions are analyzed. The velocity and volume transport through
the Luzon Strait are calculated using the method of dynamic calculation. The major observed results show that water exchanges
are mainly from the Pacific to the South China Sea in the upper layer, and the flow is relatively weak and eastward in the
deeper layer. The net volume transport of the Luzon Strait during the observation period is westward, amounts to about 3.25
Sv. This result is consistent with historical observations. |
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Keywords: | Luzon Strait water exchange dynamic calculation volume transport |
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