Energetic Topographic Rossby Waves in the Northern South China Sea
文献类型：期刊论文
| 作者 | Wang, Qiang; Zeng, Lili; Shu, Yeqiang; Li, Jian; Chen, Ju; He, Yunkai; Yao, Jinglong; Wang, Dongxiao; Zhou, Weidong; dxwang@scsio.ac.cn |
| 刊名 | JOURNAL OF PHYSICAL OCEANOGRAPHY
 |
| 出版日期 | 2019 |
| 卷号 | 49期号:10页码:2697 |
| 关键词 | Ocean Abyssal circulation Eddies Rossby waves Eddies |
| DOI | 10.1175/JPO-D-18-0247.1 |
| 英文摘要 | Topographic Rossby waves (TRWs) are reported to make a significant contribution to the deep-ocean current variability. On the northern South China Sea (NSCS) continental slope, TRWs with peak spectral energy at similar to 14.5 days are observed over about a year at deep moorings aligned east-west around the Dongsha Islands. The TRWs with a group velocity of O(10) cm s(-1) contribute more than 40% of total bottom velocity fluctuations at the two mooring stations. The energy propagation and source are further identified using a ray-tracing model. The TRW energy mainly propagates westward along the NSCS continental slope with a slight downslope component. The possible energy source is upper-ocean 10-20-day fluctuations on the east side of the Dongsha Islands, which are transferred through the first baroclinic mode (i.e., the second EOF mode). These 10-20-day fluctuations in the upper ocean are associated with mesoscale eddies. However, to the west of the Dongsha Islands, the 10-20-day fluctuations in the upper ocean are too weak to effectively generate TRWs locally. This work provides an interesting insight toward understanding the NSCS deep current variability and the linkage between the upper- and deep-ocean currents. |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41776026, 41776036, 41676012, 41606030, 41776025, 41521005]; National key research and development program [2017YFA0603201]; Pearl River S& T Nova Program of Guangzhou [201906010051] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41776026, 41776036, 41676012, 41606030, 41776025, 41521005]; National key research and development program [2017YFA0603201]; Pearl River S& T Nova Program of Guangzhou [201906010051] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18219]  |
| 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 | Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qiang,Zeng, Lili,Shu, Yeqiang,et al. Energetic Topographic Rossby Waves in the Northern South China Sea[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2019,49(10):2697, 2714. |
| APA | Wang, Qiang.,Zeng, Lili.,Shu, Yeqiang.,Li, Jian.,Chen, Ju.,...&dxwang@scsio.ac.cn.(2019).Energetic Topographic Rossby Waves in the Northern South China Sea.JOURNAL OF PHYSICAL OCEANOGRAPHY,49(10),2697. |
| MLA | Wang, Qiang,et al."Energetic Topographic Rossby Waves in the Northern South China Sea".JOURNAL OF PHYSICAL OCEANOGRAPHY 49.10(2019):2697. |
入库方式： OAI收割
来源：南海海洋研究所
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