Scale Transition From Geostrophic Motions to Internal Waves in the Northern South China Sea
文献类型：期刊论文
| 作者 | Cao, Haijin; Jing, Zhiyou1; Fox-Kemper, Baylor; Yan, Tong1; Qi, Yiquan; jingzhiyou@scsio.ac.cn |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
 |
| 出版日期 | 2019 |
| 卷号 | 124期号:12页码:9364 |
| 关键词 | Balanced to unbalanced transition Wave-vortex decomposition Spectral analysis Northern South China Sea |
| DOI | 10.1029/2019JC015575 |
| 英文摘要 | The eddy-abundant circulation in the northern South China Sea (NSCS) tends to be dynamically complex due to monsoon forcing, Kuroshio intrusion, and emitted internal waves from the Luzon Strait. This study uses 13-year shipboard acoustic Doppler current profiler measurements (2004-2016), orbital altimeter data, and high-resolution model output to perform wave-vortex decompositions and investigate the scale of transition from dominantly geostrophic flows to internal wave motions in the northern South China Sea. The upper ocean kinetic energy spectra transition on scales exceeds 200 km. This large scale of transition is attributed to the energetic low-mode internal waves (e.g., internal tides and inertia-gravity waves). However, inconsistencies in the decomposition reveal that the assumptions of homogeneity and isotropy required for the 1-D decomposition (Buhler et al., 2014) are sufficiently violated at smaller scales to affect the subdominant member of the decomposition on scales below 100 km. A method for direct quantification of the consequences by degree of violation using bootstrapping of the 2-D model data is developed and illustrated. Observed and modeled sea surface height spectra flatten at scales smaller than 125 km, which is found in the model to be due to the coherent, semidiurnal internal waves. The large scale of transition between geostrophic and wave motions in the South China Sea is an irreducible uncertainty for altimeter velocities (e.g., the Surface Water and Ocean Topography mission). |
| 资助机构 | National Key Research and Development Program of China [2017YFA0604104]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51709092, 41776040, 41830538]; Natural Science Foundation of Jiangsu ProvinceJiangsu Planned Projects for Postdoctoral Research FundsNatural Science Foundation of Jiangsu Province [BK20170865]; NSFNational Science Foundation (NSF) [1258907]; Basic Frontier Scientific Research Program of CAS [ZDBS-LY-DQC011]; Innovation Academy of South China Sea Ecology and Environmental Engineering, CAS [ISEE2018PY05]; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0303]; [OCFL-201804]; [201904010420]; [2018M642148]; [2018K149C] ; National Key Research and Development Program of China [2017YFA0604104]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51709092, 41776040, 41830538]; Natural Science Foundation of Jiangsu ProvinceJiangsu Planned Projects for Postdoctoral Research FundsNatural Science Foundation of Jiangsu Province [BK20170865]; NSFNational Science Foundation (NSF) [1258907]; Basic Frontier Scientific Research Program of CAS [ZDBS-LY-DQC011]; Innovation Academy of South China Sea Ecology and Environmental Engineering, CAS [ISEE2018PY05]; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0303]; [OCFL-201804]; [201904010420]; [2018M642148]; [2018K149C] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18181]  |
| 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.Hohai Univ, Coll Oceanog, Nanjing, Jiangsu, Peoples R China 2.Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China 3.Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA |
| 推荐引用方式 GB/T 7714 | Cao, Haijin,Jing, Zhiyou,Fox-Kemper, Baylor,et al. Scale Transition From Geostrophic Motions to Internal Waves in the Northern South China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2019,124(12):9364, 9383. |
| APA | Cao, Haijin,Jing, Zhiyou,Fox-Kemper, Baylor,Yan, Tong,Qi, Yiquan,&jingzhiyou@scsio.ac.cn.(2019).Scale Transition From Geostrophic Motions to Internal Waves in the Northern South China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,124(12),9364. |
| MLA | Cao, Haijin,et al."Scale Transition From Geostrophic Motions to Internal Waves in the Northern South China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 124.12(2019):9364. |
入库方式： OAI收割
来源：南海海洋研究所
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