The characteristics of alongshore current in flood and the dry season in Modaomen Estuary of the Pearl River and the reason analysis

Gao Shiyou; He Yong; Lu Chen; Yang Yugui; Wu Menwu

doi:10.3969/j.issn.0253-4193.2017.05.001

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Gao Shiyou, He Yong, Lu Chen, Yang Yugui, Wu Menwu. The characteristics of alongshore current in flood and the dry season in Modaomen Estuary of the Pearl River and the reason analysis[J]. Haiyang Xuebao, 2017, 39(5): 1-9. doi: 10.3969/j.issn.0253-4193.2017.05.001

Citation:

Gao Shiyou, He Yong, Lu Chen, Yang Yugui, Wu Menwu. The characteristics of alongshore current in flood and the dry season in Modaomen Estuary of the Pearl River and the reason analysis[J]. Haiyang Xuebao, 2017, 39(5): 1-9. doi: 10.3969/j.issn.0253-4193.2017.05.001

Citation:

Gao Shiyou, He Yong, Lu Chen, Yang Yugui, Wu Menwu. The characteristics of alongshore current in flood and the dry season in Modaomen Estuary of the Pearl River and the reason analysis[J]. Haiyang Xuebao, 2017, 39(5): 1-9. doi: 10.3969/j.issn.0253-4193.2017.05.001

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The characteristics of alongshore current in flood and the dry season in Modaomen Estuary of the Pearl River and the reason analysis

doi: 10.3969/j.issn.0253-4193.2017.05.001

1.
School of Geography and Planning of Sun Yat-Sen University, Guangzhou 510275, China;Key Laboratory of the Pearl River Estuarine Dynamics and Associated Process Regulation, Ministry of the Water Resources, Guangzhou 510611, China;Pearl River Hydraulic Research Institute, Guangzhou 510611, China
2.
Key Laboratory of the Pearl River Estuarine Dynamics and Associated Process Regulation, Ministry of the Water Resources, Guangzhou 510611, China;Pearl River Hydraulic Research Institute, Guangzhou 510611, China

Received Date: 2016-04-20
Rev Recd Date: 2016-12-09

Abstract

Abstract

According to the observation data in spring tide, middle tide, neap tide in flood and dry season at Modaomen Estuary from 2011 to 2012, this paper analyzes Euler residual current, Stokes residual current and Lagrange residual flow. The results show that: (1) the main direction of Euler residual current and Lagrange residual flow are southwest in winter and summer but the current in east and west branch show offshore under the strong runoff; (2) the Stokes residual current is much less than Euler residual current and much greater in summer than in winter, the direction of the Stokes residual current is in the opposite of Euler residual current; (3) there is a stable southwest alongshore current in winter in Modaomen Estuary, the driving effect of northeast monsoon in the South China Sea is the main reason, there is no consistent characteristics of alongshore current in summer, the main influencing factors is runoff and the wind, and the influence of the terrain especially the shunt effect caused by the mouth bar should not be neglected, it will influence the transport of water and sediment which under the strong runoff significantly.
- alongshore current,
- Modaomen Estuary,
- Euler residual current,
- Stokes residual current,
- Lagrange residual flow

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References

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