Interannual Variability of the Mindanao Current/Undercurrent in Direct Observations and Numerical Simulations

doi:10.1175/JPO-D-15-0092.1

IOCAS-IR > 海洋环流与波动重点实验室

	Interannual Variability of the Mindanao Current/Undercurrent in Direct Observations and Numerical Simulations
	Hu, Shijian 1,2,3; Hu, Dunxin 1,2,3; Guan, Cong1,2,4 ; Wang, Fan1,2,3 ; Zhang, Linlin 1,2,3; Wang, Fujun 1,2,3; Wang, Qingye 1,2,3
	2016-02-01
发表期刊	JOURNAL OF PHYSICAL OCEANOGRAPHY
卷号	46 期号:2 页码:483-499
文章类型	Article
摘要	The interannual variability of the boundary currents east of the Mindanao Island, including the Mindanao Current/Undercurrent (MC/MUC), is investigated using moored acoustic Doppler current profiler (ADCP) measurements combined with a series of numerical experiments. The ADCP mooring system was deployed east of the Mindanao Island at 7 degrees 59 ' N, 127 degrees 3 ' E during December 2010-August 2014. Depth-dependent interannual variability is detected in the two western boundary currents: strong and lower-frequency variability dominates the upper-layer MC, while weaker and higher-frequency fluctuation controls the subsurface MUC. Throughout the duration of mooring measurements, the weakest MC was observed in June 2012, in contrast to the maximum peaks in December 2010 and June 2014, while in the deeper layer the MUC shows speed peaks circa December 2010, January 2011, April 2013, and July 2014 and valleys circa June 2011, August 2012, and November 2013. Diagnostic analysis and numerical sensitivity experiments using a 2.5-layer reduced-gravity model indicate that wind forcing in the western Pacific Ocean is a driving agent in conditioning the interannual variability of MC and MUC. Results suggest that westward-propagating Rossby waves that generate in the western Pacific Ocean (roughly 150 degrees-180 degrees E) are of much significance in the interannual variability of the two boundary currents. Fluctuation of Ekman pumping due to local wind stress curl anomaly in the far western Pacific Ocean (roughly 120 degrees-150 degrees E) also plays a role in the interannual variability of the MC. The relationship between the MC/MUC and El Nino is discussed.
关键词	In Situ Oceanic Observations Geographic Location/entity Pacific Ocean Observational Techniques And Algorithms Boundary Currents Circulation/ Dynamics
DOI	10.1175/JPO-D-15-0092.1
收录类别	SCI
语种	英语
WOS记录号	WOS:000372707000001
引用统计	被引频次：30[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/337002/126211
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Wave, Qingdao 266071, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Peoples R China 4.Univ Chinese Acad Sci, Beijing, 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, Shijian,Hu, Dunxin,Guan, Cong,et al. Interannual Variability of the Mindanao Current/Undercurrent in Direct Observations and Numerical Simulations[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2016,46(2):483-499.
APA	Hu, Shijian.,Hu, Dunxin.,Guan, Cong.,Wang, Fan.,Zhang, Linlin.,...&Wang, Qingye.(2016).Interannual Variability of the Mindanao Current/Undercurrent in Direct Observations and Numerical Simulations.JOURNAL OF PHYSICAL OCEANOGRAPHY,46(2),483-499.
MLA	Hu, Shijian,et al."Interannual Variability of the Mindanao Current/Undercurrent in Direct Observations and Numerical Simulations".JOURNAL OF PHYSICAL OCEANOGRAPHY 46.2(2016):483-499.

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