中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Nonlinearity of Subtidal Estuarine Circulation in the Pearl River Estuary, China

文献类型:期刊论文

作者Xu, Hongzhou1,2; Shen, Jian3; Wang, Dongxiao4; Luo, Lin5; Hong, Bo6
刊名FRONTIERS IN MARINE SCIENCE
出版日期2021-06-15
卷号8页码:15
关键词nonlinearity subtidal estuarine circulation advection lateral circulation the Pearl River Estuary EFDC model
DOI10.3389/fmars.2021.629403
英文摘要The Pearl River Estuary (PRE) is a bell-shaped estuary with a narrow deep channel and wide shoals. This unique topographic feature leads to different dynamics of the subtidal estuarine circulation (SEC) in the PRE compared with a narrow and straight estuary. In this study, the nonlinear dynamics of the SEC in the PRE under mean circumstance are analyzed by using a validated 3D numerical model. Model results show that the nonlinear advections reach leading order in the along-channel momentum balance. Modulated by tide, the nonlinear advections show significant temporal variations as they have much larger values during spring tide than that during neap tide. Unlike straight and narrow estuaries, both tidally and cross-sectionally averaged axial and lateral advections play important roles in driving the SEC in the PRE in which the axial advection dominates the nonlinear effect, but the two nonlinear terms balance each other largely resulting in a reduced nonlinear effect. Despite this, the total nonlinear advection is still comparable with other terms, and it acts as the baroclinic pressure to reinforce the SEC, especially during the ebb tide, suggesting a flood & ndash;ebb asymmetry of the nonlinear dynamics in the PRE. In addition, diagnostic analyses of the along-channel vorticity budget show that nonlinear advections also make significant contribution to drive the lateral circulation in the PRE as Coriolis and baroclinic pressure terms, indicating complex dynamics of the circulation in the PRE.
WOS关键词ADJACENT COASTAL WATERS ; SALTWATER INTRUSION ; LATERAL ADVECTION ; ALONG-CHANNEL ; MODEL ; SALINITY ; TURBULENCE ; TRANSPORT ; DYNAMICS ; VELOCITY
资助项目National Natural Science Foundation of China[41666001] ; National Natural Science Foundation of China[41976014] ; Natural Science Foundation of Guangdong[2018A030313901] ; CAS Frontier Basic Research Project[QYJC201910] ; Strategic Priority Research Program of the CAS[XDA13030302]
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology
语种英语
WOS记录号WOS:000663817300001
出版者FRONTIERS MEDIA SA
资助机构National Natural Science Foundation of China ; Natural Science Foundation of Guangdong ; CAS Frontier Basic Research Project ; Strategic Priority Research Program of the CAS
源URL[http://ir.idsse.ac.cn/handle/183446/8719]  
专题深海科学研究部_海洋环流观测与数值模拟研究室
通讯作者Hong, Bo
作者单位1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China
3.Coll William & Mary, Virginia Inst Marine Sci, Gloucester Point, VA USA
4.Sun Yat Sen Univ, Sch Marine Sci, Zhuhai, Peoples R China
5.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Peoples R China
6.South China Univ Technol, Sch Civil Engn & Transportat, Guangzhou, Peoples R China
推荐引用方式
GB/T 7714
Xu, Hongzhou,Shen, Jian,Wang, Dongxiao,et al. Nonlinearity of Subtidal Estuarine Circulation in the Pearl River Estuary, China[J]. FRONTIERS IN MARINE SCIENCE,2021,8:15.
APA Xu, Hongzhou,Shen, Jian,Wang, Dongxiao,Luo, Lin,&Hong, Bo.(2021).Nonlinearity of Subtidal Estuarine Circulation in the Pearl River Estuary, China.FRONTIERS IN MARINE SCIENCE,8,15.
MLA Xu, Hongzhou,et al."Nonlinearity of Subtidal Estuarine Circulation in the Pearl River Estuary, China".FRONTIERS IN MARINE SCIENCE 8(2021):15.

入库方式: OAI收割

来源:深海科学与工程研究所

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