Institutional Repository of Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
The Subsurface Mode Tropical Instability Waves in the Equatorial Pacific Ocean and Their Impacts on Shear and Mixing | |
Liu, Chuanyu1,2,3,4; Fang, Liyuan1,2,3,4; Koehl, Armin5; Liu, Zhiyu6,7; Smyth, William D.8; Wang, Fan1,2,3,4 | |
2019-11-14 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
页码 | 9 |
通讯作者 | Liu, Chuanyu(chuanyu.liu@qdio.ac.cn) |
摘要 | The tropical instability waves (TIWs) in the eastern tropical Pacific have generally been considered as surface-intensified structures resembling the first baroclinic mode. Here, we report on the existence of subsurface-intensified TIWs on the equator. These TIWs are primarily manifested in zonal velocities, inducing maximum velocity oscillations at 70-90 m depth with amplitudes of 0.1-0.2 m/s and periods of 5-20 days. They account for similar to 20% of the variance at 5- to 30-day periods, with another similar to 50% being contributed by the surface-intensified TIWs. These waves are most significant during the TIW seasons; they are energized in part by barotropic instabilities and usually last for 3-7 months. Via interacting with the mean flow, they can induce strong out-of-phase shear changes between similar to 50-m depth and just above the Equatorial Undercurrent core and may lead to complex diapycnal mixing structures. Their horizontal structures, generation mechanism(s), and large-scale impacts remain to be disclosed. |
关键词 | tropical instability waves second baroclinic mode subsurface upper core layer mixing equatorial Pacific |
DOI | 10.1029/2019GL085123 |
收录类别 | SCI |
语种 | 英语 |
资助项目 | National Key Research Program of China[2016YFC1401703] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[QYZDB-SSW-DQC030] ; National Natural Science Foundation of China (NSFC)[41976012] ; National Natural Science Foundation of China (NSFC)[41606026] ; National Natural Science Foundation of China (NSFC)[Y72143101B] ; National Natural Science Foundation of China (NSFC)[41730534] ; National Natural Science Foundation of China (NSFC)[41622601] ; National Natural Science Foundation of China (NSFC)[91858201] ; Aoshan Talents Program, Pilot National Laboratory for Marine Science and Technology at Qingdao (QNLM)[2017ASTCP-ES03] ; U.S. National Science Foundation[OCE-1355768] ; State Key Laboratory of Marine Environmental Science, Xiamen University |
WOS研究方向 | Geology |
WOS类目 | Geosciences, Multidisciplinary |
WOS记录号 | WOS:000496469800001 |
出版者 | AMER GEOPHYSICAL UNION |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qdio.ac.cn/handle/337002/165089 |
专题 | 海洋环流与波动重点实验室 |
通讯作者 | Liu, Chuanyu |
作者单位 | 1.Chinese Acad Sci IOCAS, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Shandong, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao QNLM, Marine Dynam Proc & Climate Funct Lab, Qingdao, Shandong, Peoples R China 3.UCAS, Coll Earth & Planetary Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Shandong, Peoples R China 5.Univ Hamburg, Inst Oceanog, Hamburg, Germany 6.Xiamen Univ, Coll Ocean & Earth Sci, State Key Lab Marine Environm Sci, Xiamen, Fujian, Peoples R China 7.Xiamen Univ, Coll Ocean & Earth Sci, Dept Phys Oceanog, Xiamen, Fujian, Peoples R China 8.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA |
第一作者单位 | 中国科学院海洋研究所 |
通讯作者单位 | 中国科学院海洋研究所 |
推荐引用方式 GB/T 7714 | Liu, Chuanyu,Fang, Liyuan,Koehl, Armin,et al. The Subsurface Mode Tropical Instability Waves in the Equatorial Pacific Ocean and Their Impacts on Shear and Mixing[J]. GEOPHYSICAL RESEARCH LETTERS,2019:9. |
APA | Liu, Chuanyu,Fang, Liyuan,Koehl, Armin,Liu, Zhiyu,Smyth, William D.,&Wang, Fan.(2019).The Subsurface Mode Tropical Instability Waves in the Equatorial Pacific Ocean and Their Impacts on Shear and Mixing.GEOPHYSICAL RESEARCH LETTERS,9. |
MLA | Liu, Chuanyu,et al."The Subsurface Mode Tropical Instability Waves in the Equatorial Pacific Ocean and Their Impacts on Shear and Mixing".GEOPHYSICAL RESEARCH LETTERS (2019):9. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
The Subsurface Mode (15947KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 |
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