Seasonal dynamics of water circulation and exchange flows in a shallow lagoon-inlet-coastal ocean system

doi:10.1016/j.ocemod.2023.102276

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

	Seasonal dynamics of water circulation and exchange flows in a shallow lagoon-inlet-coastal ocean system
	Mao, Miaohua 1,2,3; Xia, Meng 3
刊名	Ocean Modelling
	2023
卷号	186
关键词	Hydrodynamics Lakes Numerical models Tides
ISSN号	14635003
DOI	10.1016/j.ocemod.2023.102276
英文摘要	A wave–current coupled, unstructured-grid, three-dimensional hydrodynamic model was applied to investigate the seasonal dynamics of the Maryland Coastal Bays system. The model's performance was validated successfully against hydrodynamic observations from the spring to fall of 2014, and the driving forces of water circulation and exchange flows were discussed. Results indicate that seasonal dynamics are primarily controlled by tides, modulated by winds, waves, and density variations, and regulated by the inlet orientation and geometry. Seasonal circulation in the surface layer is stronger than that near the bottom. The strong coastal circulation, net outflows via inlets, and the clockwise movements in the southern Isle of Wight Bay are primarily controlled by tides. The directional alignment between winds and the bay's principal axis and inlet orientation are key to the seasonal circulation and exchange flows in Sinepuxent Bay and via inlets. Wave-induced effects are comparable to tides in particular regions (e.g., reaching 30 cm/s in Isle of Wight Bay), and much larger than those caused by density variations overall. Additional numerical experiments indicate that spatial variations in salinity are mainly responsible for the density-induced circulation (e.g., 6 cm/s at the mouth of Newport River in Newport Bay). Further analysis indicates that the net exchange flows vary from the surface to bottom layers (e.g., different magnitudes or transporting directions) both in the lagoon and via the paired inlets. This work is beneficial to coastal communities and numerical modelers in understanding the dynamics of shallow lagoon-inlet-coastal ocean systems at a seasonal timescale. © 2023 Elsevier Ltd
语种	英语
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/34287]
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
作者单位	1.CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Shandong, Yantai; 264003, China; 2.Shandong Key Laboratory of Coastal Environmental Processes, Shandong, Yantai; 264003, China; 3.Department of Natural Sciences, University of Maryland Eastern Shore, Princess Anne; MD; 21853, United States
推荐引用方式 GB/T 7714	Mao, Miaohua,Xia, Meng. Seasonal dynamics of water circulation and exchange flows in a shallow lagoon-inlet-coastal ocean system[J]. Ocean Modelling,2023,186.
APA	Mao, Miaohua,&Xia, Meng.(2023).Seasonal dynamics of water circulation and exchange flows in a shallow lagoon-inlet-coastal ocean system.Ocean Modelling,186.
MLA	Mao, Miaohua,et al."Seasonal dynamics of water circulation and exchange flows in a shallow lagoon-inlet-coastal ocean system".Ocean Modelling 186(2023).