Influence of tidal mixing on bottom circulation in the Caroline Sea

doi:10.3389/fmars.2024.1301541

IOCAS-IR > 海洋环流与波动重点实验室

	Influence of tidal mixing on bottom circulation in the Caroline Sea
	Wang, Xiaowei 1,2,3; Liu, Chuanyu 1,2,3; Wang, Fan1,2,3
	2024-02-13
发表期刊	FRONTIERS IN MARINE SCIENCE
卷号	11 页码:11
通讯作者	Liu, Chuanyu([email protected])
摘要	Bottom circulation in the abyssal Caroline Sea is an important component of the global meridional overturning circulation. By use of a high-resolution regional ocean model, the influence of tidal mixing processes on bottom water and circulation in the Caroline Sea is investigated. Based on different configurations for diapycnal diffusivities of tidal mixing, three numerical experiments are performed: one completely without tidal mixing, one only with local tidal mixing due to the locally dissipated tidal energy, and one considering tidal mixing processes induced by the total dissipated tidal energy. The results show that tidal mixing processes in the abyssal Caroline Sea could sustain a relatively high horizontal density gradient and hence baroclinic pressure gradient not only across the two deep-water passages connecting to the open ocean, but also within the abyssal West Caroline Basin (WCB) and East Caroline Basin (ECB). Therefore, tidal mixing processes could maintain the large amounts of bottom water inflow, intensify the bottom basin/subbasin-scale horizontal circulation, and drive a more vigorous meridional overturning circulation in the abyssal WCB and ECB. Moreover, simulations of bottom water transport in the experiment with tidal mixing processes are more consistent with previous observations and estimates. These results suggest that tidal mixing processes play a crucial dynamic role in the bottom circulation, and is essential for ocean modelling.
关键词	bottom water bottom circulation tidal mixing Caroline Sea West Caroline Basin East Caroline Basin ocean model
DOI	10.3389/fmars.2024.1301541
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41806015]; National Natural Science Foundation of China[42090044]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42040102]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22050203]
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
WOS类目	Environmental Sciences ; Marine & Freshwater Biology
WOS记录号	WOS:001171703100001
出版者	FRONTIERS MEDIA SA
WOS关键词	INTERNAL-TIDE ; OVERTURNING CIRCULATION ; OCEAN ; DISSIPATION ; PACIFIC ; MODEL ; CLOSURE ; ENERGY ; FLOW
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/184915
专题	海洋环流与波动重点实验室
通讯作者	Liu, Chuanyu
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China 3.Laoshan Lab, Qingdao, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Wang, Xiaowei,Liu, Chuanyu,Wang, Fan. Influence of tidal mixing on bottom circulation in the Caroline Sea[J]. FRONTIERS IN MARINE SCIENCE,2024,11:11.
APA	Wang, Xiaowei,Liu, Chuanyu,&Wang, Fan.(2024).Influence of tidal mixing on bottom circulation in the Caroline Sea.FRONTIERS IN MARINE SCIENCE,11,11.
MLA	Wang, Xiaowei,et al."Influence of tidal mixing on bottom circulation in the Caroline Sea".FRONTIERS IN MARINE SCIENCE 11(2024):11.