Watermass properties and deep currents in the northern Yap Trench observed by the Submersible Jiaolong system

doi:10.1016/j.dsr.2018.06.001

	Watermass properties and deep currents in the northern Yap Trench observed by the Submersible Jiaolong system
	Liu, Yongzhi 1,2,3; Liu, Xuehai 1,3; Lv, Xianqing 2,3; Cao, Wei 1; Sun, Chengjun 1; Lu, Jing 1,3; Wang, Chunsheng 4; Lu, Bo 4; Yang, Jichao 5
刊名	DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
	2018-09
卷号	139 页码:27-42
关键词	Yap Trench Bottom current Water property Turbulent mixing
ISSN号	0967-0637
DOI	10.1016/j.dsr.2018.06.001
英文摘要	According to the field experiment implemented by the cruise with the observation by Submersible Jiaolong in No. 37 and 38 Cruise of China Ocean Mineral Resources R&D Association, detailed investigations about northern Yap Trench, including the water properties, bottom currents, turbulent mixing were presented. The deep watermass properties indicate that the deep water originates from East Mariana Basin (EMB) and East Caroline Basin (ECB), as part of the west propagating Lower Circumpolar Deep Water (LCPW). The volume transport results further prove it. The variability of salinity, potential temperature presents semidiurnal variations. The isothermal level variations indicate the existence of semidiurnal internal tide. The phase of salinity lags about 12 h than that of potential temperature. The salinity serves as the compensation on the isopycnal. The bottom currents mainly consist of the low frequency motions, near inertial motions, semidiurnal and diurnal motions. The strong semidiurnal motions derived by Lanczos band-pass filter and reconstructed current indicate the existence of internal tide in the western side of Yap Trench. Enhanced turbulent mixing is observed at the central part and slope of the northern Yap Trench, and weakens the stratification. The strong mixing seems to be caused by internal tides dissipation. Though mesoscale eddies are active around the Yap Trench, the bottom currents are not directly associated with mesoscale eddies.
资助项目	National Natural Science Foundation of China[41606006] ; National Natural Science Foundation of China[41276036]
WOS关键词	SOUTH CHINA SEA ; ABYSSAL CIRCULATION ; INTERNAL TIDES ; FLOW PATTERNS ; WORLD OCEAN ; PACIFIC ; VARIABILITY ; MORPHOLOGY ; OVERTURNS ; MARIANA
WOS研究方向	Oceanography
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000446284300003
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26673]
专题	自然资源部第一海洋研究所
通讯作者	Liu, Xuehai
作者单位	1.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China 2.Ocean Univ China, Key Lab Phys Oceanog, Qingdao 266003, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266100, Peoples R China 4.State Ocean Adm, Inst Oceanog 2, Hangzhou 310012, Zhejiang, Peoples R China 5.Natl Deep Sea Ctr, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yongzhi,Liu, Xuehai,Lv, Xianqing,et al. Watermass properties and deep currents in the northern Yap Trench observed by the Submersible Jiaolong system[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2018,139:27-42.
APA	Liu, Yongzhi.,Liu, Xuehai.,Lv, Xianqing.,Cao, Wei.,Sun, Chengjun.,...&Yang, Jichao.(2018).Watermass properties and deep currents in the northern Yap Trench observed by the Submersible Jiaolong system.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,139,27-42.
MLA	Liu, Yongzhi,et al."Watermass properties and deep currents in the northern Yap Trench observed by the Submersible Jiaolong system".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 139(2018):27-42.