Stream-coordinate structure of oceanic jets based on merged altimeter data
文献类型：CNKI期刊论文
| 作者 | Sun C(孙澈); Zhang LL(张林林); Yan XM(闫晓梅) |
| 发表日期 | 2011-01-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | oceanic jet stream-coordinate Absolute Dynamic Topography (ADT) gravest empirical mode (GEM) |
| 英文摘要 | The jet structure of the Southern Ocean front south of Australia is studied in stream-coordinate with a new altimeter product—Absolute Dynamic Topography (ADT) from AVISO. The accuracy of the ADT data is validated with the mooring data from a two-year subantarctic-front experiment. It is demonstrated that the ADT is consistent with in-situ measurements and captures the meso-scale activity of the Antarctic Circumpolar Current (ACC). Stream-coordinate analysis of ADT surface geostrophic flows finds that ACC jets exhibit large spatio-temporal variability and do not correspond to particular streamfunction values. In the circumpolar scope ACC jets display a transient fragmented pattern controlled by topographic features. The poleward shift of jet in streamfunction space, as revealed by a streamwise correlation method, indicates the presence of meridional fluxes of zonal momentum. Such cross-stream eddy fluxes concentrate the broad ACC baroclinic flow into narrow jets. Combined with a recent discovery of gravest empirical mode (GEM) in the thermohaline fields, the study clarifies the interrelationship among front, jet and streamfunction in the Southern Ocean. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Basic Research Program of China (973 Program) (Nos.2006CB403601,2007CB411804) ; the Knowledge Innovation Program of Chinese Academy of Sciences (No.KZCX2-YW-Q11-02) ; the National Natural Sciences Foundation of China (No.40776014) |
| 卷 | v.29期:01页:3-11 |
| 语种 | 英文; |
| 分类号 | P731.21 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/191851]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofOceanCirculationandWave,InstituteofOceanology,ChineseAcademyofSciences 2.GraduateUniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Sun C,Zhang LL,Yan XM. Stream-coordinate structure of oceanic jets based on merged altimeter data. 2011. |
入库方式： OAI收割
来源：海洋研究所
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