What processes control the net currents through shallow straits? A review with application to the Bohai Strait, China

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	What processes control the net currents through shallow straits? A review with application to the Bohai Strait, China
	Li, YF; Wolanski, E; Zhang, H
刊名	ESTUARINE COASTAL AND SHELF SCIENCE
	2015-06-05
卷号	158 页码:1-11
关键词	straits flushing sea level currents tides wind
ISSN号	0272-7714
通讯作者	Li, YF (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Chunhui Rd 17, Laishan Dist, Yantai, Peoples R China. yfli@yic.ac.cn
产权排序	[Li, Yanfang; Zhang, Hua] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Laishan Dist, Yantai, Peoples R China; [Wolanski, Eric] James Cook Univ, Sch Marine & Trop Biol & TropWATER, Townsville, Qld 4811, Australia; [Wolanski, Eric] Australian Inst Marine Sci, Townsville, Qld 4810, Australia
中文摘要	We review the key processes controlling the net water circulation in shallow straits. The circulation is mainly barotropic, driven by the difference in mean sea level and tides on either side of the strait, the wind, the meandering of the currents in the adjoining seas, the bathymetry including the shape and width of the mouths and the presence of narrows, shoals, sills, islands, and lateral embayments. As the oceanography forcing can be non-synchronised on either side of the strait, the resulting net currents through the strait may appear chaotic. We apply these findings to the net circulation through the Bohai Strait in China using local wind, remote-sensing data of currents and sea level, and a hydrodynamic model. The net currents through the Bohai Strait were episodic. They were largest during winter storms when the wind generated a cyclonic coastal current in the northern Yellow Sea that flowed across the width of the Bohai Strait. Like the Luzon Strait, this current meandered and a branch of the current intruded into the northern Bohai Strait along the deeper channel. The wind set-up in the Bohai Sea and the wind-driven longshore current in the southern Bohai Sea generated a seaward flow through the southern Bohai Strait, somewhat like in Irbe Strait. As with the straits of the Seto Inland Sea, stagnation occurred in some embayments. As in the Torres Strait, the islands in the southern Bohai Strait retarded the net flow and increased the width of the outflow zone. These flows were also modulated at very long periods (similar to 60 days) by long waves in the Yellow Sea, possibly generated by meandering of the Kuroshio Current that created an additional sea level slope through the strait. The transit time in the Bohai Strait was 60 and 10 days, respectively, during calm weather and winter storms. The residence time in the Bohai Sea was estimated to be about 1.68 years by the LOICZ model and 1.56 years by the hydrodynamic model, and the influence of the river runoff, including the Yellow River, was negligible. (C) 2015 Elsevier Ltd. All rights reserved.
英文摘要	We review the key processes controlling the net water circulation in shallow straits. The circulation is mainly barotropic, driven by the difference in mean sea level and tides on either side of the strait, the wind, the meandering of the currents in the adjoining seas, the bathymetry including the shape and width of the mouths and the presence of narrows, shoals, sills, islands, and lateral embayments. As the oceanography forcing can be non-synchronised on either side of the strait, the resulting net currents through the strait may appear chaotic. We apply these findings to the net circulation through the Bohai Strait in China using local wind, remote-sensing data of currents and sea level, and a hydrodynamic model. The net currents through the Bohai Strait were episodic. They were largest during winter storms when the wind generated a cyclonic coastal current in the northern Yellow Sea that flowed across the width of the Bohai Strait. Like the Luzon Strait, this current meandered and a branch of the current intruded into the northern Bohai Strait along the deeper channel. The wind set-up in the Bohai Sea and the wind-driven longshore current in the southern Bohai Sea generated a seaward flow through the southern Bohai Strait, somewhat like in Irbe Strait. As with the straits of the Seto Inland Sea, stagnation occurred in some embayments. As in the Torres Strait, the islands in the southern Bohai Strait retarded the net flow and increased the width of the outflow zone. These flows were also modulated at very long periods (similar to 60 days) by long waves in the Yellow Sea, possibly generated by meandering of the Kuroshio Current that created an additional sea level slope through the strait. The transit time in the Bohai Strait was 60 and 10 days, respectively, during calm weather and winter storms. The residence time in the Bohai Sea was estimated to be about 1.68 years by the LOICZ model and 1.56 years by the hydrodynamic model, and the influence of the river runoff, including the Yellow River, was negligible. (C) 2015 Elsevier Ltd. All rights reserved.
学科主题	Marine & Freshwater Biology; Oceanography
研究领域[WOS]	Marine & Freshwater Biology ; Oceanography
关键词[WOS]	WATER CIRCULATION ; SEA ; FLOW ; VARIABILITY ; TRANSPORT ; SEDIMENT ; FLUCTUATIONS ; EXCHANGE ; MODEL ; WIND
收录类别	SCI
语种	英语
WOS记录号	WOS:000355046100001
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/8607]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室烟台海岸带研究所_污染过程与控制实验室
推荐引用方式 GB/T 7714	Li, YF,Wolanski, E,Zhang, H. What processes control the net currents through shallow straits? A review with application to the Bohai Strait, China[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2015,158:1-11.
APA	Li, YF,Wolanski, E,&Zhang, H.(2015).What processes control the net currents through shallow straits? A review with application to the Bohai Strait, China.ESTUARINE COASTAL AND SHELF SCIENCE,158,1-11.
MLA	Li, YF,et al."What processes control the net currents through shallow straits? A review with application to the Bohai Strait, China".ESTUARINE COASTAL AND SHELF SCIENCE 158(2015):1-11.