Articles | Volume 21, issue 4
https://doi.org/10.5194/os-21-1291-2025
https://doi.org/10.5194/os-21-1291-2025
Research article
 | 
10 Jul 2025
Research article |  | 10 Jul 2025

Topographic modulation on the layered circulation in the South China Sea

Qibang Tang, Zhongya Cai, and Zhiqiang Liu

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Short summary
The South China Sea is the largest semi-enclosed marginal sea in the western Pacific, featuring unique layered circulation with rotating currents in its upper, middle, and deep layers. This study uses simulations to explore how stronger currents in the upper layer influence circulation across the entire basin. The vorticity analyses show that the enhanced upper currents increase the strength of middle and deep currents, driven by changes in bottom pressure and cross-slope movements.
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