On the subsurface countercurrents in the Philippine Sea

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	On the subsurface countercurrents in the Philippine Sea
	Wang, Fan1 ; Zang, Nan 1,2; Li, Yuanlong 1,2; Hu, Dunxin 1
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2015
卷号	120 期号:1 页码:131-144
关键词	western boundary currents undercurrents the Philippine Sea thermocline
英文摘要	The subsurface countercurrents in the Philippine Sea and their roles in water mass transportation have been reported in previous studies. Their existence is still controversial, and the underlying dynamics remains unclear. This study investigates the climatological structures and relationships of three subsurface countercurrents, namely the Mindanao Undercurrent (MUC), the Luzon Undercurrent (LUC), and the North Equatorial Undercurrent (NEUC), using recently available hydrographic and satellite altimeter data. The three subsurface currents below and opposite to the surface currents are confirmed by multisections analysis. The MUC, as traced at zonal sections between 6.5 degrees N and 10.5 degrees N, shows two northward velocity cores, both with maximum speed larger than 10 cm s(-1). The LUC exhibits an obscure core with southward velocity larger than 2 cm s(-1) under the Kuroshio at 18 degrees N and 16.25 degrees N sections. The eastward flowing NEUC also has two separated cores at 128.2 degrees E and 130 degrees E sections with velocity larger than 1 cm s(-1). Analyses of -S relationship suggest that the southern part of NEUC is fed by the MUC with the South Pacific water and South/North Pacific water mixture, while the northern NEUC is likely a destiny of the North Pacific water carried by the LUC. Tightly associated with the opposite horizontal gradients between sea surface height (SSH) and the depth of thermocline (DTC), the subsurface countercurrents exist in connected zones where the baroclinic adjustment below the thermocline overcomes the barotropic forcing at the sea surface, which indicates the dynamical linkages among the three subsurface countercurrents.
收录类别	SCI
语种	英语
WOS记录号	WOS:000349890000009
公开日期	2015-06-16
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/25383]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Fan,Zang, Nan,Li, Yuanlong,et al. On the subsurface countercurrents in the Philippine Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2015,120(1):131-144.
APA	Wang, Fan,Zang, Nan,Li, Yuanlong,&Hu, Dunxin.(2015).On the subsurface countercurrents in the Philippine Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,120(1),131-144.
MLA	Wang, Fan,et al."On the subsurface countercurrents in the Philippine Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 120.1(2015):131-144.