A New Assessment of Mesoscale Eddies in the South China Sea: Surface Features, Three-Dimensional Structures, and Thermohaline Transports
文献类型：期刊论文
| 作者 | Zhan, Weikang1,2; Huang, Gaolong1,2; He, Yinghui; Cai, Shuqun; Zhan, Haigang1; He, Qingyou1,2 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
 |
| 出版日期 | 2018 |
| 卷号 | 123期号:7页码:4906 |
| 关键词 | mesoscale eddies three-dimensional structure heat transport salt transport South China Sea |
| ISSN号 | 2169-9275 |
| DOI | 10.1029/2018JC014054 |
| 英文摘要 | By analyzing 22 years (1993-2015) of daily eddy data, statistics of surface eddy properties were refreshed in the South China Sea. More than 7,000 of historical Argo profiles were collocated into eddy-centered coordinates to reveal the composite mean three-dimensional structure of eddies. The results indicate that eddies of both polarities have long conical shape, with a maximum (minimum) density anomaly of 0.55 kg/m(3) (-0.51 kg/m(3)) at 60 m (90 m) in the composite cyclonic (anticyclonic) eddy. Temperature and salinity anomalies also peak at eddy cores, with values of -1.5 degrees C and 0.15 psu in the cyclonic eddy and 1.4 degrees C and -0.16 psu in the anticyclonic eddy. The temperature and density anomalies extend vertically to 400-500 m, while the salinity anomalies are apparent only in the upper 150 m. The temperature anomalies contribute about 90% of the density anomalies. Mixed layer depths in cyclonic eddies are on average 15 m shallower than those in anticyclonic eddies. The rotation of the composite cyclonic (anticyclonic) eddy generates meridional heat transport of 1.4 x 10(12) W (-3.1 x 10(12) W) and salt transport of -4.0 x 10(4) kg/s (5.6 x 10(4) kg/s). More than 90% of the heat and salt transports are concentrated in the upper 300 and 100 m, respectively. Compared to the meridional transports, the westward propagation of eddies results in zonal heat and salt transports on the same orders of magnitudes. The westward propagation of eddies also generates a basin-scale westward water transport of 1.4 Sv, equivalent to about 30% of the annual-mean Luzon Strait transport. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17587]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China 2.Chinese Acad Sci, South China Sea Inst Oceanol, Guangdong Key Lab Ocean Remote Sensing, Guangzhou, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhan, Weikang,Huang, Gaolong,He, Yinghui,et al. A New Assessment of Mesoscale Eddies in the South China Sea: Surface Features, Three-Dimensional Structures, and Thermohaline Transports[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2018,123(7):4906, 4929. |
| APA | Zhan, Weikang,Huang, Gaolong,He, Yinghui,Cai, Shuqun,Zhan, Haigang,&He, Qingyou.(2018).A New Assessment of Mesoscale Eddies in the South China Sea: Surface Features, Three-Dimensional Structures, and Thermohaline Transports.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,123(7),4906. |
| MLA | Zhan, Weikang,et al."A New Assessment of Mesoscale Eddies in the South China Sea: Surface Features, Three-Dimensional Structures, and Thermohaline Transports".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 123.7(2018):4906. |
入库方式： OAI收割
来源：南海海洋研究所
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