Articles | Volume 21, issue 5
https://doi.org/10.5194/os-21-2631-2025
https://doi.org/10.5194/os-21-2631-2025
Research article
 | 
28 Oct 2025
Research article |  | 28 Oct 2025

Enhancement of near-inertial waves by cyclonic eddy in the northwestern South China Sea during spring 2022

Qi'an Chen, Hongzhou Xu, Dongxiao Wang, Bo Hong, Chunlei Liu, Zheyang Zhang, Huichang Jiang, Wei Song, Tong Long, Ling Wang, Sumin Liu, and Rongjie Chen

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Cited articles

Alford, M. H.: Internal Swell Generation: The Spatial Distribution of Energy Flux from the Wind to Mixed Layer Near-Inertial Motions, J. Phys. Oceanogr., 31, 2359–2368, 2001. 
Alford, M. H.: Redistribution of energy available for ocean mixing by long-range propagation of internal waves, Nature, 423, 159–162, 2003. 
Alford, M. H.: Revisiting Near-Inertial Wind Work: Slab Models, Relative Stress, and Mixed Layer Deepening, J. Phys. Oceanogr., 50, 3141–3156, 2020. 
Alford, M. H., MacKinnon, J. A., Simmons, H. L., and Nash, J. D.: Near-Inertial Internal Gravity Waves in the Ocean, Annu. Rev. Mar. Sci., 8, 95–123, 2016. 
Barkan, R., Srinivasan, K., Yang, L., McWilliams, J. C., Gula, J., and Vic, C.: Oceanic Mesoscale Eddy Depletion Catalyzed by Internal Waves, Geophys. Res. Lett., 48, e2021GL094376, https://doi.org/10.1029/2021GL094376, 2021. 
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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.
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