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Water mass characteristics in the western North Pacific based on a streamfunction projection
Ma Xiao1,2; Sun Che1
2015-11-01
发表期刊SCIENCE CHINA-EARTH SCIENCES
卷号58期号:11页码:2067-2077
文章类型Article
摘要A streamfunction projection method called gravest empirical mode (GEM) is applied to the hydrographic section at 137A degrees E to filter out eddy noises in the western North Pacific and derive quantitative ensemble-average water mass properties in the North Equatorial Current region. The GEM fields capture more than 80% of total property variances in the thermocline layer. The core layer structures of key water masses, including the North Pacific Tropical Water (NPTW) and the North Pacific Intermediate Water (NPIW), are examined with a definition of water mass boundary based on property gradient. It shows that a tongue of maximal root-mean-square (RMS) residual exists in the upper half of NPIW for all water properties. These subsurface RMS tongues appear to be close to sharp property gradients. It is the first time a GEM diagnosis is applied to nutrient data, which reveals a drastic difference of N/P reaction rate ratio above and below the maximal-nutrient core at 1250 m. Additionally, a GEM velocity reconstruction successfully produces the North Equatorial Undercurrent (NEUC), demonstrating the stable thermal-wind nature of this newly-discovered current.
关键词Streamfunction Projection Gravest Empirical Mode Water Masses Western North Pacific
DOI10.1007/s11430-015-5100-z
收录类别SCI
语种英语
WOS记录号WOS:000363258600016
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/337002/73938
专题海洋环流与波动重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
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Ma Xiao,Sun Che. Water mass characteristics in the western North Pacific based on a streamfunction projection[J]. SCIENCE CHINA-EARTH SCIENCES,2015,58(11):2067-2077.
APA Ma Xiao,&Sun Che.(2015).Water mass characteristics in the western North Pacific based on a streamfunction projection.SCIENCE CHINA-EARTH SCIENCES,58(11),2067-2077.
MLA Ma Xiao,et al."Water mass characteristics in the western North Pacific based on a streamfunction projection".SCIENCE CHINA-EARTH SCIENCES 58.11(2015):2067-2077.
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