Articles | Volume 20, issue 1
https://doi.org/10.5194/os-20-181-2024
© Author(s) 2024. 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-20-181-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 Feb 2024
Research article |
| 19 Feb 2024
| 19 Feb 2024
Salt intrusion dynamics in a well-mixed sub-estuary connected to a partially to well-mixed main estuary
Zhongyuan Lin
School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
Key Laboratory of Pearl River Estuary Regulation and Protection of Ministry of Water Resource, Guangzhou 510611, China
Pearl River Water Resource Research Institute, Guangzhou 510611, China
Guang Zhang
School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai 519082, China
Huazhi Zou
Key Laboratory of Pearl River Estuary Regulation and Protection of Ministry of Water Resource, Guangzhou 510611, China
Pearl River Water Resource Research Institute, Guangzhou 510611, China
School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai 519082, China
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Guang Zhang, Suan Hu, Xiaolong Yu, Heng Zhang, and Wenping Gong
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This study explores how wind and wave dynamics affect the movement of riverine sediment to the ocean. Using advanced modeling, we found that most riverine sediment stays near the estuary in wet summer, with strong winter winds resuspending it for transport. Our findings highlight the significant impact of seasonal changes on sediment movement, which is crucial for understanding coastal ecosystems and managing sediment-related challenges.
Rui Zhang, Bo Hong, Lei Zhu, Wenping Gong, and Heng Zhang
Ocean Sci., 18, 213–231, https://doi.org/10.5194/os-18-213-2022, https://doi.org/10.5194/os-18-213-2022, 2022
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(1) The intensity of the longitudinal estuarine circulation kept increasing as the estuary width continued to decrease.
(2) The changes in water depth were the dominant factor affecting lateral circulation intensity.
(3) The changes in the estuarine circulation were dominated by the changes in the baroclinic pressure gradient force and advection.
Wenping Gong, Zhongyuan Lin, Yunzhen Chen, Zhaoyun Chen, and Heng Zhang
Ocean Sci., 14, 139–159, https://doi.org/10.5194/os-14-139-2018, https://doi.org/10.5194/os-14-139-2018, 2018
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Salt intrusion in the Pearl River Estuary is a dynamic process that is influenced by a range of factors, and few studies have examined the effects of winds and waves. Therefore, we investigate these effects using the Coupled Ocean-Atmosphere-Wave-Sediment Transport modeling system in this region. It was found that enhancement of the salt intrusion is comparable between the remote and local winds. Waves decrease the salt intrusion by increasing the water mixing.
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Short summary
From 2021 to 2022, a particular sub-estuary (East River estuary) suffered greatly from an enhanced salt intrusion. We conducted observation analysis, numerical simulations, and analytical solution to unravel the underlying mechanisms. This study is of help in the investigation of salt dynamics in sub-estuaries connected to main estuaries and of implications for mitigating salt intrusion problems in the regions.
From 2021 to 2022, a particular sub-estuary (East River estuary) suffered greatly from an...
