IOCAS-IR  > 海洋环流与波动重点实验室
Instability in boundary layer between the North Equatorial Current and underlying zonal jets based on mooring observations
Wang Fujun1,2,3; Feng Junqiao1,2,3; Wang Qingye1,2,3; Zhang Linlin1,2,3; Hu Shijian1,2,3; Hu Dunxin1,2,3
2020-07-08
Source PublicationJOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN2096-5508
Pages14
Corresponding AuthorWang Fujun(fujunwang@qdio.ac.cn)
AbstractInstability/stability in the North Equatorial Current (NEC) basin is studied based on data obtained from nine moorings deployed at 8.5 degrees N, 10.5 degrees N, 11.0 degrees N, 12.5 degrees N, 13.0 degrees N, 15.0 degrees N, 15.5 degrees N, 17.5 degrees N, and 18.0 degrees N along 130.0 degrees E during cruises in 2015-2017. In low latitudes, the Coriolis parameter and stratification ratio play important roles in NEC stability, whereas velocity shear and the layer depth ratio are important for NEC stability in high latitudes. Beneath the westward NEC, eastward zonal jets occur intermittently centered around 8.5 degrees N, 12.5 degrees N, and 17.5 degrees N along 130.0 degrees E. Similar to the NEC, the main body of these zonal jets also deepens with latitude. In the boundary layer comprising the bottom NEC and upper zonal jets, the growth rate of the NEC is attributed not only to velocity shear but also to zonal jet velocity based on the longwave assumption. Based on the shortwave assumption, the growth rate is proportional to zonal jet velocity but has no relationship with velocity shear. Climatologically, the growth rate in the boundary layer is not zero at 8.5 degrees N, 12.5 degrees N, and 13.0 degrees N, where the velocity shear and zonal jets are larger than at other stations. The instability also occurs at the time node when the zonal jets are strong enough, although the mean zonal jets may disappear at this station.
Keywordinstability North Equatorial Current (NEC) zonal jets
DOI10.1007/s00343-020-0015-8
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDB42010102] ; Strategic Priority Research Program of the Chinese Academy of Sciences[2013FY111300] ; National Natural Science Foundation of China[41776021] ; Foundation for Innovative Research Groups of the National Natural Science Foundation of China[41421005]
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS SubjectLimnology ; Oceanography
WOS IDWOS:000547231900001
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/167832
Collection海洋环流与波动重点实验室
Corresponding AuthorWang Fujun
Affiliation1.Chinese Acad Sci, Key Lab Ocean Circulat & Wave, Inst Oceanol, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao 266000, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang Fujun,Feng Junqiao,Wang Qingye,et al. Instability in boundary layer between the North Equatorial Current and underlying zonal jets based on mooring observations[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2020:14.
APA Wang Fujun,Feng Junqiao,Wang Qingye,Zhang Linlin,Hu Shijian,&Hu Dunxin.(2020).Instability in boundary layer between the North Equatorial Current and underlying zonal jets based on mooring observations.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,14.
MLA Wang Fujun,et al."Instability in boundary layer between the North Equatorial Current and underlying zonal jets based on mooring observations".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2020):14.
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