Direct Measurements of the Luzon Undercurrent

doi:10.1175/JPO-D-12-0165.1

IOCAS-IR > 海洋环流与波动重点实验室

	Direct Measurements of the Luzon Undercurrent
	Hu, Dunxin 1,2; Hu, Shijian 1,2,3; Wu, Lixin 4; Li, Lei 4; Zhang, Linlin 1,2; Diao, Xinyuan1,5 ; Chen, Zhaohui 4; Li, Yuanlong 1,2,3; Wang, Fan1,2 ; Yuan, Dongliang1,2 ; Hu, DX
	2013-07-01
发表期刊	JOURNAL OF PHYSICAL OCEANOGRAPHY
ISSN	0022-3670
卷号	43 期号:7 页码:1417-1425
文章类型	Article
摘要	The Luzon Undercurrent (LUC) was discovered about 20 years ago by geostrophic calculation from conductivity-temperature-depth (CTD) data. But it was not directly measured until 2010. From November 2010 to July 2011, the LUC was first directly measured by acoustic Doppler current profiler (ADCP) from a subsurface mooring at 18.0 degrees N, 122.7 degrees E to the east of Luzon Island. A number of new features of the LUC were identified from the measurements of the current. Its depth covers a range from 400 m to deeper than 700 m. The observed maximum velocity of the LUC, centered at about 650 m, could exceed 27.5 cm s(-1), four times stronger than the one derived from previous geostrophic calculation with hydrographic data. According to the time series available, the seasonality of the LUC strength is in winter > summer > spring. Significant intraseasonal variability (ISV; 70-80 days) of the LUC is exposed. Evidence exists to suggest that a large portion of the intraseasonal variability in the LUC is related to the westward propagation of mesoscale eddies from the east of the mooring site.; The Luzon Undercurrent (LUC) was discovered about 20 years ago by geostrophic calculation from conductivity-temperature-depth (CTD) data. But it was not directly measured until 2010. From November 2010 to July 2011, the LUC was first directly measured by acoustic Doppler current profiler (ADCP) from a subsurface mooring at 18.0 degrees N, 122.7 degrees E to the east of Luzon Island. A number of new features of the LUC were identified from the measurements of the current. Its depth covers a range from 400 m to deeper than 700 m. The observed maximum velocity of the LUC, centered at about 650 m, could exceed 27.5 cm s(-1), four times stronger than the one derived from previous geostrophic calculation with hydrographic data. According to the time series available, the seasonality of the LUC strength is in winter > summer > spring. Significant intraseasonal variability (ISV; 70-80 days) of the LUC is exposed. Evidence exists to suggest that a large portion of the intraseasonal variability in the LUC is related to the westward propagation of mesoscale eddies from the east of the mooring site.
关键词	Pacific Ocean Ocean Circulation Eddies In Situ Oceanic Observations Intraseasonal Variability Seasonal Cycle
学科领域	Oceanography
DOI	10.1175/JPO-D-12-0165.1
URL	查看原文
收录类别	SCI
语种	英语
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000329778000012
WOS关键词	NORTH EQUATORIAL CURRENT ; WATER MASS-DISTRIBUTION ; PACIFIC ; CURRENTS ; COUNTERCURRENT ; VARIABILITY ; CIRCULATION ; MINDANAO ; COAST ; EAST
WOS标题词	Science & Technology ; Physical Sciences
引用统计	被引频次：51[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/16400
专题	海洋环流与波动重点实验室
通讯作者	Hu, DX
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Wave, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Ocean Univ China, Phys Oceanog Lab, Qingdao, Peoples R China 5.Chinese Acad Sci, R&D Ctr Marine Environm Engn & Technol, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Hu, Dunxin,Hu, Shijian,Wu, Lixin,et al. Direct Measurements of the Luzon Undercurrent[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2013,43(7):1417-1425.
APA	Hu, Dunxin.,Hu, Shijian.,Wu, Lixin.,Li, Lei.,Zhang, Linlin.,...&Hu, DX.(2013).Direct Measurements of the Luzon Undercurrent.JOURNAL OF PHYSICAL OCEANOGRAPHY,43(7),1417-1425.
MLA	Hu, Dunxin,et al."Direct Measurements of the Luzon Undercurrent".JOURNAL OF PHYSICAL OCEANOGRAPHY 43.7(2013):1417-1425.

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