Interannual variations in energy conversion and interaction between the mesoscale eddy field and mean flow in the Kuroshio south of Japan
文献类型：CNKI期刊论文
| 作者 | Ma LB(马利斌); Wang Q(王强) |
| 发表日期 | 2014-01-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | eddy kinetic energy energy conversion rate eddy-mean flow interaction Reynolds stress |
| 英文摘要 | Using 19-year satellite altimetric data, variations in the eddy kinetic energy, energy exchanges and interaction between the eddy fi eld and mean fl ow are discussed for the Kuroshio south of Japan. In the seasonal cycle, the eddy kinetic energy level is a minimum in December/January and a maximum in April/May. In addition to seasonal variations, the eddy kinetic energy undergoes interannual changes. The energy transfers mainly from the mean fl ow to the eddy fi eld in the Kuroshio south of Japan, and dominant energy exchanges mainly occur along the Kuroshio path south of Japan in each year from 1993 to 2011. In addition, there is often barotropic instability south of Honshu. Regarding interactions between the eddy fi eld and mean fl ow, cyclonic and anticyclonic accelerations are also found along the Kuroshio path and they fl ank each other. There is cyclonic acceleration always imposed on southeast of Kyushu, and anticyclonic acceleration dominates south of Honshu from 2001 to mid-2005. Reynolds stress is used to explain the dynamic process of energy exchange. Furthermore, lag-correlation and linear regression analysis show that variability of the energy conversion rate and Reynolds stress involve responses to eddy acceleration at two time scales. The enhanced eddy acceleration induces large Reynolds stress, and enhanced Reynolds stress or barotropic instability further enforces energy transfer from the mean fl ow to the eddy fi eld. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the Knowledge Innovation Program of Chinese Academy of Sciences(No.KZCX2-EW-201) ; the Basic Research Program of Science and Technology Projects of Qingdao(No.11-1-4-95-jch) |
| 卷 | v.32期:01页:212-224 |
| 语种 | 英文; |
| 分类号 | P731.2 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190591]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Ma LB,Wang Q. Interannual variations in energy conversion and interaction between the mesoscale eddy field and mean flow in the Kuroshio south of Japan. 2014. |
入库方式： OAI收割
来源：海洋研究所
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