Yu, Xiaojie1,2; Guo, Xinyu1,3; Gao, Huiwang1,2; Zou, Tao4
发表期刊JOURNAL OF PHYSICAL OCEANOGRAPHY
ISSN0022-3670
2021-07-01
卷号51期号:7页码:2351-2371
关键词EstuariesBaroclinic flowsBuoyancyFreshwaterTidesNumerical analysismodeling
DOI10.1175/JPO-D-20-0235.1
通讯作者Guo, Xinyu(guoxinyu@sci.ehime-u.ac.jp)
英文摘要Hydrographic surveys have revealed that the Yellow River plume propagates in the direction opposite to that of a Kelvin wave (upstream) under a low river discharge condition, but turns downstream as the river discharge increases. A numerical model reproduced the upstream extension of the plume under the low river discharge condition and the transition to the downstream direction under the high river discharge condition, and confirmed that the summer wind is not the necessary condition for upstream extension of the plume. With the condition of low river discharge, the model also indicated the dependence of the upstream extension of the plume on the tidal range: extending upstream in spring tide but turning downstream in neap tide. The upstream movement of the plume results from the upstream transport of freshwater that depends on the upstream tide-induced residual current around the river mouth and the downstream density-driven current around the offshore plume front. With the condition of high river discharge, the upstream tide-induced residual current cannot compete with the downstream density-driven current and the plume turns downstream. Momentum analysis confirms the important roles of advection term and viscosity term in the condition of low river discharge and the shift to a Coriolis force-dominated system under high river discharge condition. An idealized model study suggests a dimensionless number for the river discharge changing the river plume extension from upstream to downstream under a specific upstream ambient current around the river mouth.
资助机构National Natural Science Foundation of China; National Natural Science Foundation of China-Shandong Joint Fund; Postdoctoral Research Foundation of China; Fundamental Research Funds for Central Universities of the Ministry of Education of China; Youth Foundation of the Shandong Academy of Sciences
收录类别SCI
语种英语
关键词[WOS]CIRCULATION; DISCHARGE; FRONT; MODEL; FATE; SEA
研究领域[WOS]Oceanography
WOS记录号WOS:000674887900016
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/29506
专题中科院海岸带环境过程与生态修复重点实验室
中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者Guo, Xinyu作者单位1.Ocean Univ China, Minist Educ, Key Lab Marine Environm & Ecol, Qingdao, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
3.Ehime Univ, Ctr Marine Environm Studies, Matsuyama, Ehime, Japan
4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai, Peoples R China
推荐引用方式
GB/T 7714Yu, Xiaojie,Guo, Xinyu,Gao, Huiwang,et al. Upstream Extension of a Bottom-Advected Plume and Its Mechanism: The Case of the Yellow River[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2021,51(7):2351-2371.
APAYu, Xiaojie,Guo, Xinyu,Gao, Huiwang,&Zou, Tao.(2021).Upstream Extension of a Bottom-Advected Plume and Its Mechanism: The Case of the Yellow River.JOURNAL OF PHYSICAL OCEANOGRAPHY,51(7),2351-2371.
MLAYu, Xiaojie,et al."Upstream Extension of a Bottom-Advected Plume and Its Mechanism: The Case of the Yellow River".JOURNAL OF PHYSICAL OCEANOGRAPHY 51.7(2021):2351-2371.
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