Ocean Science
Ocean Science
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Articles | Volume 22, issue 2
Articles | Volume 22, issue 2
https://doi.org/10.5194/os-22-1105-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-22-1105-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 2
Research article
 | 
01 Apr 2026
Research article |  | 01 Apr 2026

Coastal circulation and dispersion of passive tracers in the Red River plume region: unveiling seasonal- and intra-seasonal variability

Thanh Huyen Tran, Alexei Sentchev, Dylan Dumas, Charles-Antoine Guerin, Sylvain Ouillon, and Kim Cuong Nguyen

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Short summary
The research used high-resolution high-frequency radar data and surface drifters to investigate surface circulation patterns in the Red River plume area of the Gulf of Tonkin from August to December 2024. Particle spreading intensified and became highly scattered rather than remaining clustered as particles approached river outflows and eddy-dominated zones. The study shows that material transport and spreading became remarkably faster during Typhoon Yagi 2024 than under normal conditions.
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