Seasonal Variation of the Deep Limb of the Pacific Meridional Overturning Circulation at Yap-Mariana Junction

doi:10.1029/2019JC016017

IOCAS-IR > 海洋环流与波动重点实验室

	Seasonal Variation of the Deep Limb of the Pacific Meridional Overturning Circulation at Yap-Mariana Junction
	Wang, Jianing1,2,3 ; Ma, Qiang1 ; Wang, Fan1,2,3 ; Lu, Youyu 4; Pratt, Larry J.5
	2020-07-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
卷号	125 期号:7 页码:17
通讯作者	Wang, Fan(fwang@qdio.ac.cn)
摘要	This study reveals the seasonal variability of the lower and upper deep branches of the Pacific Meridional Overturning Circulation (L-PMOC and U-PMOC) in the Yap-Mariana Junction (YMJ) channel, a major gateway for deep flow into the western Pacific. On the western side of the YMJ channel, mooring observations in 2017 and in 1997 show the seasonal phase of the L-PMOC at depths of 3,800-4,400 m: strong northward flow with speed exceeding 20 cm s(-1)and lasting from December to next May and weak flow during the following 6 months. On the eastern side of the channel, mooring observations during 2014-2017 show two southward deep flows with broadly seasonal phases, one being the return flow of L-PMOC below similar to 4,000 m and with the same phase of L-PMOC but reduced magnitude. The second, shallower, southward deep flow corresponds to the U-PMOC observed within 3,000-3,800 m and with opposite phase of L-PMOC, that is, strong (weak) southward flow appearing during June-November (December-May). Seasonal variations of the L-PMOC and U-PMOC are accompanied by the seasonal intrusions of the Lower and Upper Circumpolar Waters (LCPW and UCPW) in lower and upper deep layers, which change the isopycnal structure and the deep currents in a way consistent with geostrophic balance.
DOI	10.1029/2019JC016017
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41730534] ; National Natural Science Foundation of China[41421005] ; National Natural Science Foundation of China[91958204] ; National Natural Science Foundation of China[41776022] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SYS034] ; Scientific and Technological Innovation Project by Qingdao National Laboratory for Marine Science and Technology[2016ASKJ12] ; National Program on Global Change and Air-Sea Interaction[GASI-IPOVAI-01-01] ; NSF[OCE-1657870]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000560011100019
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：18[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/337002/168172
专题	海洋环流与波动重点实验室
通讯作者	Wang, Fan
作者单位	1.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Fisheries & Oceans Canada, Bedford Inst Oceanog, Dartmouth, NS, Canada 5.Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA
第一作者单位	中国科学院海洋大科学研究中心
通讯作者单位	中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Wang, Jianing,Ma, Qiang,Wang, Fan,et al. Seasonal Variation of the Deep Limb of the Pacific Meridional Overturning Circulation at Yap-Mariana Junction[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2020,125(7):17.
APA	Wang, Jianing,Ma, Qiang,Wang, Fan,Lu, Youyu,&Pratt, Larry J..(2020).Seasonal Variation of the Deep Limb of the Pacific Meridional Overturning Circulation at Yap-Mariana Junction.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(7),17.
MLA	Wang, Jianing,et al."Seasonal Variation of the Deep Limb of the Pacific Meridional Overturning Circulation at Yap-Mariana Junction".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.7(2020):17.

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