Ocean Science
Ocean Science
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Articles | Volume 21, issue 5
Articles | Volume 21, issue 5
https://doi.org/10.5194/os-21-2041-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-21-2041-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 5
Research article
 | 
18 Sep 2025
Research article |  | 18 Sep 2025

Physical drivers and parameter sensitivities of pearl river-derived sediment dispersal on the Northern South China Sea Shelf: a modeling study

Guang Zhang, Suan Hu, Xiaolong Yu, Heng Zhang, and Wenping Gong

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Short summary
The study reveals strong seasonal patterns in Pearl River-derived sediment transport: calm summers favor deposition via buoyant plumes, while winter winds and waves enhance resuspension and southwestward transport into the Beibu Gulf. Tides drive estuarine export, waves dominate coastal resuspension, and shelf circulation promotes summer eastward spread. Settling velocity, spin-up duration, and seasonal changes in critical shear stress also affect sediment retention and transport pathways.
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