Articles | Volume 21, issue 5
https://doi.org/10.5194/os-21-2631-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-21-2631-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
28 Oct 2025
Research article |
| 28 Oct 2025
| 28 Oct 2025
Enhancement of near-inertial waves by cyclonic eddy in the northwestern South China Sea during spring 2022
Qi'an Chen
Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, China
University of Chinese Academy of Sciences, Beijing, 100049, China
Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, China
Dongxiao Wang
School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519000, China
South Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519082, China
Bo Hong
CORRESPONDING AUTHOR
School of Civil and Transportation Engineering, South China University of Technology, Guangzhou, 510641, China
Chunlei Liu
College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, 524088, China
South China Sea Institute of Marine Meteorology, Guangdong Ocean University, 529568, Zhanjiang, China
Zheyang Zhang
Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, China
Huichang Jiang
Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, China
Wei Song
School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519000, China
Tong Long
Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, China
Ling Wang
Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, China
University of Chinese Academy of Sciences, Beijing, 100049, China
Sumin Liu
Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, China
Rongjie Chen
Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, China
University of Chinese Academy of Sciences, Beijing, 100049, China
Data sets
ERA-5 wind data Hersbach et al. https://doi.org/10.24381/cds.adbb2d47
Figure data and code Q. Chen https://doi.org/10.5281/zenodo.15705180
Short summary
NIWs (near-inertial waves) have horizontal spatial scales of 10–100 km and slow group velocities, making them to interact strongly with mesoscale eddies. In the northwestern SCS (South China Sea), large portion of eddy propagate westward and may interact with local NIWs. In this study, four moorings were deployed in this area and they captured a vivid case of interaction between a cyclonic eddy and NIWs. Our paper provides direct evidence of strong interaction between eddy and NIWs in the northwestern SCS.
NIWs (near-inertial waves) have horizontal spatial scales of 10–100 km and slow group...
