The Subsurface Mode Tropical Instability Waves in the Equatorial Pacific Ocean and Their Impacts on Shear and Mixing

doi:10.1029/2019GL085123

CORC > 海洋研究所 > 中国科学院海洋研究所 > 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, Chuanyu 5,6,7,8; Fang, Liyuan 5,6,7,8; Koehl, Armin 4; Liu, Zhiyu 1,3; Smyth, William D.2; Wang, Fan 5,6,7,8
刊名	GEOPHYSICAL RESEARCH LETTERS
	2019-11-14
页码	9
关键词	tropical instability waves second baroclinic mode subsurface upper core layer mixing equatorial Pacific
ISSN号	0094-8276
DOI	10.1029/2019GL085123
通讯作者	Liu, Chuanyu(chuanyu.liu@qdio.ac.cn)
英文摘要	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.
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
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000496469800001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/165088]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Liu, Chuanyu
作者单位	1.Xiamen Univ, Coll Ocean & Earth Sci, State Key Lab Marine Environm Sci, Xiamen, Fujian, Peoples R China 2.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA 3.Xiamen Univ, Coll Ocean & Earth Sci, Dept Phys Oceanog, Xiamen, Fujian, Peoples R China 4.Univ Hamburg, Inst Oceanog, Hamburg, Germany 5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Shandong, Peoples R China 6.UCAS, Coll Earth & Planetary Sci, Beijing, Peoples R China 7.Pilot Natl Lab Marine Sci & Technol Qingdao QNLM, Marine Dynam Proc & Climate Funct Lab, Qingdao, Shandong, Peoples R China 8.Chinese Acad Sci IOCAS, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Shandong, Peoples R China
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.