An anticyclonic eddy in the intermediate layer of the Luzon Strait in Autumn 2005 |
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Authors: | Lingling Xie Jiwei Tian Shuwen Zhang Yanwei Zhang Qingxuan Yang |
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Institution: | (1) Key Laboratory of Climate, Resources, and Environment in Continental Shelf Sea and Deep Sea, College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, 524088, China;(2) Physical Oceanography Laboratory, Ocean University of China, Qingdao, 266003, China;(3) State Key Lab of Marine Geology, Tongji University, Shanghai, 200092, China |
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Abstract: | The complicated flow pattern in the intermediate layer of the Luzon Strait could directly affect the efficiency of the water
and energy exchange between the South China Sea (SCS) and the North Pacific. Here we present a subsurface anticyclonic eddy
in the Luzon Strait deduced using observations conducted in October 2005. On the basis of the hydrographic and current measurements,
an anticyclonic eddy was found in the intermediate layer, i.e., about 26.8–27.3σθ, 500–900 m. It captures part of the SCS Intermediate Water outflow in the northern Luzon Strait, and carries it to flow southward
and then westward back into the SCS in the southern Luzon Strait, with volume transport of about 1.9 × 106 m3 s−1. The simulated results from Hybrid Coordinate Ocean Model also suggest the existence of this anticyclonic eddy that develops
and lingers for a month long. |
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Keywords: | |
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