Institutional Repository of Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
| 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 | |
| 发表期刊 | JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| ISSN | 2096-5508 |
| 页码 | 14 |
| 通讯作者 | Wang Fujun([email protected]) |
| 摘要 | Instability/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. |
| 关键词 | instability North Equatorial Current (NEC) zonal jets |
| DOI | 10.1007/s00343-020-0015-8 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | Strategic 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研究方向 | Marine & Freshwater Biology ; Oceanography |
| WOS类目 | Limnology ; Oceanography |
| WOS记录号 | WOS:000547231900001 |
| 出版者 | SCIENCE PRESS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/167832 |
| 专题 | 海洋环流与波动重点实验室 |
| 通讯作者 | Wang Fujun |
| 作者单位 | 1.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 |
| 第一作者单位 | 海洋环流与波动重点实验室; 中国科学院海洋大科学研究中心 |
| 通讯作者单位 | 海洋环流与波动重点实验室; 中国科学院海洋大科学研究中心 |
| 推荐引用方式 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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| Instability in bound（5023KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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