Kinetic Energy Cascade Induced by the Interaction of Mean Flow, Topography, and Mesoscale Eddies East of Taiwan: A Scale-to-Scale Analysis
文献类型：期刊论文
| 作者 | Xu, Lingjing2,3,4,5; Yang, Dezhou1,2,3,4,5; He, Zhiwei2,3,4,5 ; Feng, Xingru1,2,3,4,5; Gao, Guandong2,3,4,5; Cui, Xuan2,3,4,5; Yin, Baoshu1,2,3,4,5
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| 刊名 | JOURNAL OF PHYSICAL OCEANOGRAPHY
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| 出版日期 | 2024-02-01 |
| 卷号 | 54期号:2页码:617-639 |
| 关键词 | North Pacific Ocean Boundary currents Eddies Energy transport |
| ISSN号 | 0022-3670 |
| DOI | 10.1175/JPO-D-23-0077.1 |
| 通讯作者 | Yang, Dezhou(yangdezhou@qdio.ac.cn) |
| 英文摘要 | The scale-to-scale kinetic energy (KE) cascade induced by the nonlinear interaction among topography, the Kuroshio, and mesoscale eddies is systematically investigated in the coarse graining framework based on simulated data from the well-validated Regional Ocean Model System. The KE transfer exhibits inhomogeneous spatial and temporal dis tributions and varies with length scale. During current topography interaction, the KE transfers downscale across larger scales and reversely across smaller scales with an inherent separation scale of 150 km northeast of Taiwan, resulting in a significant positive net KE flux for mesoscale motions. The transfer around Suao Ridge is consistently downscaled with sig- nificant seasonal variation that is stronger in summer and weaker in winter. South of Suao Ridge, the transfer is one order of magnitude weaker and changes greatly with time. The cyclonic (anticyclonic) eddy weakens (enhances) KE transfer in most study areas. In particular, the cyclonic eddy reverses the transfer direction around Suao Ridge. The anticyclonic eddy triggers a significant bidirectional transfer south of Suao Ridge. Analyses show that the special arc-shaped topographic fea ture and northwestward Kuroshio intrusion current are responsible for the nature of bidirectional KE transfer northeast of Taiwan. The direction of mean current relative to the topography gradient determines the Rossby number magnitude and the KE transfer direction. The large-scale circulation determines the transfer intensity by changing the horizontal shear and barotropic instabilities. The KE transfer caused by nonlinear dynamics contributes significantly to the total anticyclonic eddy-induced net KE flux changes. In particular, the inverse KE cascade plays a key role in net KE flux changes in mesoscale motions east of Taiwan. |
| WOS关键词 | KUROSHIO CURRENT ; LUZON STRAIT ; EDDY ENERGY ; GULF-STREAM ; OCEAN ; NORTHEAST ; VARIABILITY ; SURFACE ; PROPAGATION ; GENERATION |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001157764200002 |
| 出版者 | AMER METEOROLOGICAL SOC |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/184843]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 海洋研究所_海洋生态与环境科学重点实验室 |
| 通讯作者 | Yang, Dezhou |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Marine Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Engn Lab Marine Ranching, Qingdao, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China 4.Qingdao Marine Sci & Technol Ctr, Lab Ocean Dynam & Climate, Qingdao, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Lingjing,Yang, Dezhou,He, Zhiwei,et al. Kinetic Energy Cascade Induced by the Interaction of Mean Flow, Topography, and Mesoscale Eddies East of Taiwan: A Scale-to-Scale Analysis[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2024,54(2):617-639. |
| APA | Xu, Lingjing.,Yang, Dezhou.,He, Zhiwei.,Feng, Xingru.,Gao, Guandong.,...&Yin, Baoshu.(2024).Kinetic Energy Cascade Induced by the Interaction of Mean Flow, Topography, and Mesoscale Eddies East of Taiwan: A Scale-to-Scale Analysis.JOURNAL OF PHYSICAL OCEANOGRAPHY,54(2),617-639. |
| MLA | Xu, Lingjing,et al."Kinetic Energy Cascade Induced by the Interaction of Mean Flow, Topography, and Mesoscale Eddies East of Taiwan: A Scale-to-Scale Analysis".JOURNAL OF PHYSICAL OCEANOGRAPHY 54.2(2024):617-639. |
入库方式： OAI收割
来源：海洋研究所
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