Eddy generation and evolution in the North Pacific Subtropical Countercurrent (NPSC) zone
文献类型：期刊论文
| 作者 | Kang Lin1,2,3; Wang Fan1,2 ; Chen Yongli1,2
|
| 刊名 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2010-09-01 |
| 卷号 | 28期号:5页码:968-973 |
| 关键词 | Topex/poseidon Altimetry Eddy Field Eke Velocity Shear North Pacific Subtropical Countercurrent |
| ISSN号 | 0254-4059 |
| DOI | 10.1007/s00343-010-9010-9 |
| 文献子类 | Article |
| 英文摘要 | The seasonal generation and evolution of eddies in the region of the North Pacific Subtropical Countercurrent remain poorly understood due to the scarcity of available data. We used TOPEX/POSEIDON altimetry data from 1992 to 2007 to study the eddy field in this zone. We found that velocity shear between this region and the neighboring North Equatorial Current contributes greatly to the eddy generation. Furthermore, the eddy kinetic energy level (EKE) shows an annual cycle, maximum in April/May and minimum in December/January. Analyses of the temporal and spatial distributions of the eddy field revealed clearly that the velocity shear closely related to baroclinic instability processes. The eddy field seems to be more zonal than meridional, and the energy containing length scale shows a surprising lag of 2-3 months in comparison with the 1-D and 2-D EKE level. A similar phenomenon is observed in individual eddies in this zone. The results show that in this eddy field band, the velocity shear may drive the EKE level change so that the eddy field takes another 2-3 months to grow and interact to reach a relatively stable state. This explains the seasonal evolution of identifiable eddies.; The seasonal generation and evolution of eddies in the region of the North Pacific Subtropical Countercurrent remain poorly understood due to the scarcity of available data. We used TOPEX/POSEIDON altimetry data from 1992 to 2007 to study the eddy field in this zone. We found that velocity shear between this region and the neighboring North Equatorial Current contributes greatly to the eddy generation. Furthermore, the eddy kinetic energy level (EKE) shows an annual cycle, maximum in April/May and minimum in December/January. Analyses of the temporal and spatial distributions of the eddy field revealed clearly that the velocity shear closely related to baroclinic instability processes. The eddy field seems to be more zonal than meridional, and the energy containing length scale shows a surprising lag of 2-3 months in comparison with the 1-D and 2-D EKE level. A similar phenomenon is observed in individual eddies in this zone. The results show that in this eddy field band, the velocity shear may drive the EKE level change so that the eddy field takes another 2-3 months to grow and interact to reach a relatively stable state. This explains the seasonal evolution of identifiable eddies. |
| 学科主题 | Limnology ; Oceanography |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000281711600003 |
| 公开日期 | 2010-12-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/5275]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Circulat & Waves, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kang Lin,Wang Fan,Chen Yongli. Eddy generation and evolution in the North Pacific Subtropical Countercurrent (NPSC) zone[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2010,28(5):968-973. |
| APA | Kang Lin,Wang Fan,&Chen Yongli.(2010).Eddy generation and evolution in the North Pacific Subtropical Countercurrent (NPSC) zone.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,28(5),968-973. |
| MLA | Kang Lin,et al."Eddy generation and evolution in the North Pacific Subtropical Countercurrent (NPSC) zone".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 28.5(2010):968-973. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。