Observed characteristics of tidal currents and mean flow in the northern Yellow Sea

doi:10.1007/s00343-019-8026-z

	Observed characteristics of tidal currents and mean flow in the northern Yellow Sea
	Bi Congcong 1,2,3; Bao Xianwen 1,2,3; Ding Yang 2,3; Zhang Cong 4,5; Wang Yu 6; Shen Biao 2,3; Wan Kai 7
刊名	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2019-03
卷号	37 期号:2 页码:461-473
关键词	northern Yellow Sea moored current measurements tidal currents mean flow thermal structure
ISSN号	2096-5508
DOI	10.1007/s00343-019-8026-z
英文摘要	Several bottom-mounted Acoustic Doppler Current Profiler (ADCP) moorings were deployed in the northern Yellow Sea (NYS) during the four seasons of 2006-2007 and also the summertime of 2009. A synthesis analysis on the time-continuous records was performed to examine the characteristics and variations of tidal currents and mean flow over the observation period at these stations. Tidal currents accounted for similar to 75% of the total kinetic energy, with the absolute dominance of M-2 constituent. Visible vertical variations of tidal flow were found on all sites, featured by the decrease of amplitude, increase of rotation rate as well as a decreasing trend of the phase for M-2 component with depth. A notable exception was in the central NYS, where the maximum tidal currents occurred in the upper or middle layers (similar to 20-40 m) instead of near the surface (<10 m). The observed mean flow was relatively weak, smaller than 15 cm/s. Velocity on the northern end of Yellow Sea Trough (YST) was characterized by low magnitude and an obvious layered structure vertically. In the Bohai Strait (BS) and the northern slope area, the currents weakened and the flow direction presented a major trend to deflect counterclockwise with depth in most observations. Summertime cyclonic circulation around the Yellow Sea Cold Water Mass (YSCWM), its intensification on the frontal zone and the Yellow Sea Warm Current (YSWC) for the winter season were all evident by our direct current measurements. However, the details of water exchange through the BS appeared partly different from the traditionally-accepted pattern. The vertical differences of tidal and mean flow were larger in summer than that in winter, implying the influence of thermal structure to the local currents. Affected by the water stratification, mean flow usually reached its maximum near the thermocline in spring and summer, while showing a nearly uniform vertical distribution during winter.
资助项目	National Science Foundation for Young Scientists of China[41506012]
WOS关键词	VERTICAL STRUCTURE ; SIMULATION
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000464895600008
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/24761]
专题	自然资源部第一海洋研究所
通讯作者	Bao Xianwen
作者单位	1.Ocean Univ China, Coll Ocean & Atmospher Sci, Qingdao 266100, Shandong, Peoples R China 2.Ocean Univ China, Phys Oceanog Lab CIMST, Qingdao 266100, Shandong, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266100, Shandong, Peoples R China 4.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Shandong, Peoples R China 5.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266000, Shandong, Peoples R China 6.State Ocean Adm, Natl Marine Environm Monitoring Ctr, Dalian 116023, Peoples R China 7.State Ocean Adm, Beihai Offshore Engn Survey inst, Qingdao 266061, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Bi Congcong,Bao Xianwen,Ding Yang,et al. Observed characteristics of tidal currents and mean flow in the northern Yellow Sea[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2019,37(2):461-473.
APA	Bi Congcong.,Bao Xianwen.,Ding Yang.,Zhang Cong.,Wang Yu.,...&Wan Kai.(2019).Observed characteristics of tidal currents and mean flow in the northern Yellow Sea.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,37(2),461-473.
MLA	Bi Congcong,et al."Observed characteristics of tidal currents and mean flow in the northern Yellow Sea".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 37.2(2019):461-473.