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Modeling of suspended sediment by coupled wave-current model in the Zhujiang (Pearl) River Estuary
Liu, Guangping1; Cai, Shuqun2
2019
Source PublicationACTA OCEANOLOGICA SINICA
ISSN0253-505X
Volume38Issue:7Pages:22
AbstractA three-dimensional wave-current-sediment coupled numerical model is developed to understand the sediment transport dynamics in the Zhujiang (Pearl) River Estuary (ZRE), China. The model results are in good agreement with observed data, and statistics show good model skill scores. Numerical studies are conducted to assess the scenarios of suspended sediment in the ZRE under the effects of different forcing (river discharges, waves, and winds). The model results indicate that the estuarine gravitational circulation plays an important role in the development of estuarine turbidity maximum in the ZRE, particularly during neap tides. The increased river discharge can result in a seaward sediment transport. The suspended sediment concentration (SSC) in the bottom increases with both wave bottom orbital velocity and wave height. Because of the shallow water depth, the effect of waves on sediment in the west shoal is greater than that in the east channel. The southwesterly wind-induced wave affects the SSC more than those resulting from the northeasterly wind, while the northeasterly wind-driven circulation has a slightly greater influence on the SSC than that of the southwesterly wind. However, a steady southwesterly wind condition favors the increase of the SSC in the Lingding Bay more so than a steady northeasterly wind condition. If the other forcings are same, the averaged SSC under a steady southwesterly wind condition is about 1.1 times that resulting from a steady northeasterly wind.
DepartmentLTO
Keywordsediment transport turbidity Regional Ocean Modeling System (ROMS) Zhujiang River Estuary
DOI10.1007/s13131-019-1455-3
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17704
Collection热带海洋环境国家重点实验室(LTO)
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst South China Sea Ecol & Environm Engn, Guangzhou 510301, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Liu, Guangping,Cai, Shuqun. Modeling of suspended sediment by coupled wave-current model in the Zhujiang (Pearl) River Estuary[J]. ACTA OCEANOLOGICA SINICA,2019,38(7):22, 35.
APA Liu, Guangping,&Cai, Shuqun.(2019).Modeling of suspended sediment by coupled wave-current model in the Zhujiang (Pearl) River Estuary.ACTA OCEANOLOGICA SINICA,38(7),22.
MLA Liu, Guangping,et al."Modeling of suspended sediment by coupled wave-current model in the Zhujiang (Pearl) River Estuary".ACTA OCEANOLOGICA SINICA 38.7(2019):22.
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