IOCAS-IR  > 海洋环流与波动重点实验室
Weak Thermocline Mixing in the North Pacific Low-Latitude Western Boundary Current System
Liu, Zhiyu1,2; Lian, Qiang1,2,3; Zhang, Fangtao1,2; Wang, Lei1,2; Li, Mingming4; Bai, Xiaolin1,2; Wang, Jianing5; Wang, Fan5
2017-10-28
Source PublicationGEOPHYSICAL RESEARCH LETTERS
Volume44Issue:20Pages:10530-10539
SubtypeArticle
AbstractDespite its potential importance in the global climate system, mixing properties of the North Pacific low-latitude western boundary current system (LLWBC) remained unsampled until very recently. We report here on the first measurements of turbulence microstructure associated with these currents, made in the western boundary region of the tropical North Pacific east of the Philippines. The results suggest that thermocline mixing in the North Pacific LLWBC is generally weak with the diapycnal diffusivity kappa(rho) similar to O(10(-6))m(2) s(-1). This is consistent with predictions from internal wave-wave interaction theory that mixing due to internal wave breaking is significantly reduced at low latitudes. Enhanced mixing is found to be associated with a permanent cyclonic eddy, the Mindanao Eddy, but mainly at its south and north flanks. There, kappa(rho) is elevated by an order of magnitude due to eddy-induced geostrophic shear. Mixing in the eddy core is at the background level with no indication of enhancement.
DOI10.1002/2017GL075210
Indexed BySCI
Language英语
WOS IDWOS:000416761600053
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/143289
Collection海洋环流与波动重点实验室
实验海洋生物学重点实验室
Affiliation1.Xiamen Univ, State Key Lab Marine Environm Sci, Coll Ocean & Earth Sci, Xiamen, Peoples R China
2.Xiamen Univ, Dept Phys Oceanog, Coll Ocean & Earth Sci, Xiamen, Peoples R China
3.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA
4.Guangdong Ocean Univ, Coll Oceanog & Meteorol, Zhanjiang, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
Recommended Citation
GB/T 7714
Liu, Zhiyu,Lian, Qiang,Zhang, Fangtao,et al. Weak Thermocline Mixing in the North Pacific Low-Latitude Western Boundary Current System[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(20):10530-10539.
APA Liu, Zhiyu.,Lian, Qiang.,Zhang, Fangtao.,Wang, Lei.,Li, Mingming.,...&Wang, Fan.(2017).Weak Thermocline Mixing in the North Pacific Low-Latitude Western Boundary Current System.GEOPHYSICAL RESEARCH LETTERS,44(20),10530-10539.
MLA Liu, Zhiyu,et al."Weak Thermocline Mixing in the North Pacific Low-Latitude Western Boundary Current System".GEOPHYSICAL RESEARCH LETTERS 44.20(2017):10530-10539.
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