IOCAS-IR  > 海洋环流与波动重点实验室
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
Source PublicationGEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
Pages9
Corresponding AuthorLiu, Chuanyu(chuanyu.liu@qdio.ac.cn)
AbstractThe 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.
Keywordtropical instability waves second baroclinic mode subsurface upper core layer mixing equatorial Pacific
DOI10.1029/2019GL085123
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000496469800001
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/165089
Collection海洋环流与波动重点实验室
Corresponding AuthorLiu, Chuanyu
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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.
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