Mid-Deep Circulation in the Western South China Sea and the Impacts of the Central Depression Belt and Complex Topography

doi:10.3390/jmse12050700

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 海洋环流观测与数值模拟研究室

	Mid-Deep Circulation in the Western South China Sea and the Impacts of the Central Depression Belt and Complex Topography
	Mai, Hongtao 3,4; Wang, Dongxiao 3,4; Chen, Hui 3,4; Qiu, Chunhua 3,4; Xu, Hongzhou 2,3; Shang, Xuekun 3,4; Zhang, Wenyan 1
刊名	JOURNAL OF MARINE SCIENCE AND ENGINEERING
	2024-05-01
卷号	12 期号:5 页码:26
关键词	mid-deep circulation central depression belt western boundary South China Sea
DOI	10.3390/jmse12050700
英文摘要	As a key component of meridional overturning circulation, mid-deep circulation plays a crucial role in the vertical and meridional distribution of heat. However, due to a lack of observation data, current knowledge of the dynamics of mid-deep circulation currents moving through basin boundaries and complicated seabed topographies is severely limited. In this study, we combined oceanic observation data, bathymetric data, and numerical modeling of the northwest continental margin of the South China Sea to investigate (i) the main features of mid-deep circulation currents traveling through the central depression belt and (ii) how atmospheric-forcing (winds) mesoscale oceanic processes such as eddies and current-topography interactions modulate the mid-deep circulation patterns. Comprehensive results suggest that the convergence of different water masses and current-topography interactions take primary responsibility for the generation of instability and enhanced mixing within the central depression belt. By contrast, winds and mesoscale eddies have limited influence on the development of local circulation patterns at mid-deep depths (>400 m). This study emphasizes that the intensification and bifurcation of mid-deep circulation; specifically, those induced by a large depression belt morphology determine the local material cycle (temperature, salinity, etc.) and energy distribution. These findings provide insights for a better understanding of mid-deep circulation structures on the western boundary of ocean basins such as the South China Sea.
资助项目	National Natural Science Foundation of China[SLSK-00202310] ; National Natural Science Foundation of China[GEBCO_2023] ; National Natural Science Foundation of China[HYCOM GLBu0.08] ; CMEMS ; Group of Air-Sea Interaction in the School of Marine Sciences at Sun Yat-Sen University
WOS关键词	BOUNDARY CURRENTS ; BOTTOM CURRENTS ; OCEAN ; STABILITY ; SHEAR ; EDDY ; DISSIPATION ; VARIABILITY ; INTRUSION ; KUROSHIO
WOS研究方向	Engineering ; Oceanography
语种	英语
出版者	MDPI
WOS记录号	WOS:001232480100001
资助机构	National Natural Science Foundation of China ; CMEMS ; Group of Air-Sea Interaction in the School of Marine Sciences at Sun Yat-Sen University
内容类型	期刊论文
源URL	[http://ir.idsse.ac.cn/handle/183446/11065]
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	Wang, Dongxiao; Chen, Hui
作者单位	1.Helmholtz Zentrum Hereon, Inst Coastal Syst Anal & Modeling, D-21502 Geesthacht, Germany 2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China 3.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China 4.Sun Yat sen Univ, Sch Marine Sci, Zhuhai 519082, Peoples R China
推荐引用方式 GB/T 7714	Mai, Hongtao,Wang, Dongxiao,Chen, Hui,et al. Mid-Deep Circulation in the Western South China Sea and the Impacts of the Central Depression Belt and Complex Topography[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2024,12(5):26.
APA	Mai, Hongtao.,Wang, Dongxiao.,Chen, Hui.,Qiu, Chunhua.,Xu, Hongzhou.,...&Zhang, Wenyan.(2024).Mid-Deep Circulation in the Western South China Sea and the Impacts of the Central Depression Belt and Complex Topography.JOURNAL OF MARINE SCIENCE AND ENGINEERING,12(5),26.
MLA	Mai, Hongtao,et al."Mid-Deep Circulation in the Western South China Sea and the Impacts of the Central Depression Belt and Complex Topography".JOURNAL OF MARINE SCIENCE AND ENGINEERING 12.5(2024):26.