Estimation of the Ventilation Transit Time Distribution at the Yap-Mariana Junction Using Ar-39, Kr-85 and C-14 Tracers

doi:10.1029/2022JC018417

IOCAS-IR > 海洋环流与波动重点实验室

	Estimation of the Ventilation Transit Time Distribution at the Yap-Mariana Junction Using Ar-39, Kr-85 and C-14 Tracers
	Gu, Ji-Qiang 1; Jiang, Wei1 ; Tong, Amin L.1; Yang, Guo-Min 1; Dong, Xi-Ze 1; Ritterbusch, Florian 1; Wang, Fan2,3 ; Wang, Jianing2,3
	2022-07-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
卷号	127 期号:7 页码:12
通讯作者	Jiang, Wei([email protected])
摘要	We report on a multi-tracer study at the Yap-Mariana Junction in the western Pacific using three tracers-Kr-85, Ar-39, and C-14-with different half-lives and source functions to the oceans. The vertical profiles of Kr-85 and Ar-39 are measured using the state-of-the-art Atom Trap Trace Analysis method. This method allows analysis of Kr-85 and Ar-39 isotopes with samples collected in regular Niskin bottles. Combined with the calculated natural C-14 data, we infer the ventilation transit-time distribution (TTD) at the Yap-Mariana Junction. The mean ages of the seawater below the thermocline at the Yap-Mariana Junction are over 1,000 years. Moreover earlier Ar-39 and natural C-14 data collected in other parts of the Pacific are used to infer the local TTDs and compared with the one at the Yap-Mariana Junction. The age spectra of the Pacific bottom waters show progressive changes and increasing tails of the old water along the route from south to north. The dominance of the North Pacific Deep Water (NPDW) in the North Pacific and the effect of mixing between old water masses and younger ones at the Yap-Mariana Junction are reflected from the different shapes of the TTDs at these locations. The TTD shows the oldest water exists at about 2,000 m depth in the North Pacific. The western Pacific shows the highest degree of mixing at 1,000 m depth, while the southern Pacific has the highest degree of mixing close to the bottom.
关键词	transit time distribution atom trap trace analysis
DOI	10.1029/2022JC018417
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2016YFA0302200]; National Natural Science Foundation of China, NSFC[41727901]; National Natural Science Foundation of China, NSFC[41861224007]; National Natural Science Foundation of China, NSFC[41961144027]; Anhui Initiative in Quantum Information Technologies[AHY110000]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB21010200]; NSFC[91958204]; NSFC[42090040]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000817909300001
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：1[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/337002/179647
专题	海洋环流与波动重点实验室深海极端环境与生命过程研究中心
通讯作者	Jiang, Wei
作者单位	1.Univ Sci & Technol China, Sch Phys Sci, Hefei, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Inst Oceanol, Qingdao, Peoples R China 3.Chinese Acad Sci, Ctr Deepsea Res, Inst Oceanol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Gu, Ji-Qiang,Jiang, Wei,Tong, Amin L.,et al. Estimation of the Ventilation Transit Time Distribution at the Yap-Mariana Junction Using Ar-39, Kr-85 and C-14 Tracers[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2022,127(7):12.
APA	Gu, Ji-Qiang.,Jiang, Wei.,Tong, Amin L..,Yang, Guo-Min.,Dong, Xi-Ze.,...&Wang, Jianing.(2022).Estimation of the Ventilation Transit Time Distribution at the Yap-Mariana Junction Using Ar-39, Kr-85 and C-14 Tracers.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,127(7),12.
MLA	Gu, Ji-Qiang,et al."Estimation of the Ventilation Transit Time Distribution at the Yap-Mariana Junction Using Ar-39, Kr-85 and C-14 Tracers".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 127.7(2022):12.