Tracking the evolution processes and behaviors of mesoscale eddies in the South China Sea: a global nearest neighbor filter approach
文献类型：期刊论文
| 作者 | Yi, Jiawei1,2; Du, Yunyan1,2 ; Wang, Dongxiao3; Zhou, Chenghu1,2
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| 刊名 | ACTA OCEANOLOGICA SINICA
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| 出版日期 | 2017-11-01 |
| 卷号 | 36期号:11页码:27-37 |
| 关键词 | mesoscale ocean eddies eddy tracking eddy split eddy merger South China Sea |
| ISSN号 | 0253-505X |
| DOI | 10.1007/s13131-017-1136-6 |
| 通讯作者 | Du, Yunyan(duyy@lreis.ac.cn) |
| 英文摘要 | The eddy tracking approach is developed using the global nearest neighbor filter (GNNF) to investigate the evolution processes and behaviors of mesoscale eddies in the South China Sea (SCS). Combining the Kalman filter and optimal data association technologies, the GNNF algorithm is able to reduce pairing errors to 0.2% in tracking synthetic eddy tracks, outperforming other existing methods. A total of 4 913 eddy tracks that last more than a week are obtained by the GNNF during 1993-2012. The analysis of a growth and a decay based on 3 445 simple eddy tracks show that eddy radius, amplitude, and vorticity smoothly increase during the first half of lifetime and decline during the second half following a parabola opening downwards. The genesis of eddies mainly clusters northwest and southwest of Luzon Island whereas the dissipations concentrate the Xisha Islands where the underwater bay traps and terminates eddies. West of the Luzon Strait, northwest of Luzon Island, and southeast of Vietnam are regions where eddy splits and mergers are frequently observed. Short disappearances mainly distribute in the first two regions. Moreover, eddy splits generally result in a decrease of the radius and the amplitude whereas eddy mergers induce growing up. Eddy intensity and vorticity, on the contrary, are strengthened in the eddy splits and diminished in mergers. |
| WOS关键词 | EDDY DETECTION ; ALGORITHMS ; VORTICES ; QUANTIFICATION ; IDENTIFICATION ; CIRCULATION ; DYNAMICS ; PATTERNS ; GEOMETRY ; MODEL |
| 资助项目 | National Natural Science Foundation of China[41421001] ; National Natural Science Foundation of China[41371378] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000414992900005 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/61231]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Du, Yunyan |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou 510301, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yi, Jiawei,Du, Yunyan,Wang, Dongxiao,et al. Tracking the evolution processes and behaviors of mesoscale eddies in the South China Sea: a global nearest neighbor filter approach[J]. ACTA OCEANOLOGICA SINICA,2017,36(11):27-37. |
| APA | Yi, Jiawei,Du, Yunyan,Wang, Dongxiao,&Zhou, Chenghu.(2017).Tracking the evolution processes and behaviors of mesoscale eddies in the South China Sea: a global nearest neighbor filter approach.ACTA OCEANOLOGICA SINICA,36(11),27-37. |
| MLA | Yi, Jiawei,et al."Tracking the evolution processes and behaviors of mesoscale eddies in the South China Sea: a global nearest neighbor filter approach".ACTA OCEANOLOGICA SINICA 36.11(2017):27-37. |
入库方式： OAI收割
来源：地理科学与资源研究所
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