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DOI | 10.1002/2017GL075210 |
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 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:20 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Despite 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. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416761600053 |
WOS关键词 | EQUATORIAL UNDERCURRENT ; TURBULENT DISSIPATION ; WATER ; PATTERNS ; SEA ; PATHWAYS ; OCEAN ; SHEAR |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26371 |
专题 | 气候变化 |
作者单位 | 1.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 |
推荐引用方式 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). |
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). |
MLA | Liu, Zhiyu,et al."Weak Thermocline Mixing in the North Pacific Low-Latitude Western Boundary Current System".GEOPHYSICAL RESEARCH LETTERS 44.20(2017). |
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