Long-term trend of Pacific South Equatorial Current bifurcation over 1950-2010

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	Long-term trend of Pacific South Equatorial Current bifurcation over 1950-2010
	Zhai, Fangguo 1,2; Hu, Dunxin 2; Wang, Qingye 2; Wang, Fujun 2
刊名	GEOPHYSICAL RESEARCH LETTERS
	2014-05-16
卷号	41 期号:9 页码:3172-3180
通讯作者	Hu, DX (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China.
英文摘要	This study investigates the long-term change of the Pacific South Equatorial Current (SEC) bifurcation latitude (SBL) over 1950-2010 with Simple Ocean Data Assimilation version 2.2.4. Results indicate that the SBL averaged within upper 200 m has migrated southward at 0.020 degrees S yr(-1), comparable in magnitude with -0.024 degrees N yr(-1) for the North Equatorial Current bifurcation latitude (NBL). The SEC transport into the Coral Sea has increased. Due to the southward SBL migration, most of the increased SEC water was transported equatorward, contributing to the Equatorial Undercurrent intensification. Experiments with a nonlinear 1.5 layer reduced gravity model indicate that the southward migration of SBL is mainly caused by positive Ekman flux divergence trend in the eastern tropical South Pacific, while that of NBL is caused by negative Ekman flux divergence trend in the western tropical North Pacific.
学科主题	Geology
收录类别	SCI
语种	英语
WOS记录号	WOS:000338196700022
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/23942]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.State Ocean Adm, Inst Oceanog 3, Xiamen, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Zhai, Fangguo,Hu, Dunxin,Wang, Qingye,et al. Long-term trend of Pacific South Equatorial Current bifurcation over 1950-2010[J]. GEOPHYSICAL RESEARCH LETTERS,2014,41(9):3172-3180.
APA	Zhai, Fangguo,Hu, Dunxin,Wang, Qingye,&Wang, Fujun.(2014).Long-term trend of Pacific South Equatorial Current bifurcation over 1950-2010.GEOPHYSICAL RESEARCH LETTERS,41(9),3172-3180.
MLA	Zhai, Fangguo,et al."Long-term trend of Pacific South Equatorial Current bifurcation over 1950-2010".GEOPHYSICAL RESEARCH LETTERS 41.9(2014):3172-3180.