Deep Eddy Energy in the Southern Philippine Basin
文献类型：期刊论文
| 作者 | Ma, Weidong1,3,4; Wang, Jianing1,2,3,4; Wang, Fan1,2,3,4; Zhang, Hang2,3,4 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
 |
| 出版日期 | 2025-07-01 |
| 卷号 | 130期号:7页码:21 |
| 关键词 | deep eddy Philippine basin western Pacific deep intraseasonal variability eddy kinetic energy |
| ISSN号 | 2169-9275 |
| DOI | 10.1029/2024JC021495 |
| 通讯作者 | Wang, Jianing(wjn@qdio.ac.cn) |
| 英文摘要 | The deep eddy activities, which contain a pronounced portion of kinetic energy, are the most energetic form of flow in the deep ocean. However, the dynamics of deep eddies are inadequately understood. Deep intraseasonal variability (ISV) and eddy kinetic energy (EKE), as detected in velocity measurements from four moorings in the Southern Philippine Basin, are generally separated from the upper ocean and vertically coherent below 1,500 m. Combined with the analysis of observed temperature and salinity and outputs from an eddy-resolving reanalysis product, it is confirmed that the events causing deep ISV are deep mesoscale eddies. The energetics of deep eddies are examined by calculating the time derivative of EKE and its potential contributors during the evolution of a fixed eddy. Our energetics analysis reveals that the generation of the deep eddy is predominantly facilitated by vertical energy redistribution through pressure work between upper and deep layers, with energy primarily sourced from upper-ocean perturbations. Dissipation, inverse kinetic energy cascade, and horizontal pressure fluxes ultimately contribute to the extinction of the deep eddy. During the mature stage of the deep eddy, energy fluxes from pressure work and conversions between EKE and eddy available potential energy are notably high, although the dominant contributors vary over time. This work highlights that the deep eddy energy comes from the upper-ocean eddy, and pressure work plays a crucial role in bridging the energetics of the upper and deep layers. |
| WOS关键词 | LOCALIZED MULTISCALE ENERGY ; GULF-STREAM ; INTRASEASONAL VARIABILITY ; OCEAN CHARACTERISTICS ; VORTICITY ANALYSIS ; KINETIC-ENERGY ; LOOP CURRENT ; CIRCULATION ; CURRENTS ; EDDIES |
| 资助项目 | National Natural Science Foundation of China ; TS Scholar Program ; NSFC[42221005] ; NSFC[42090040] ; [42222602] ; [42406010] ; [92258301] ; [42349909] ; [LSKJ202203100] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001522703200001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/202650]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Wang, Jianing |
| 作者单位 | 1.Qingdao Marine Sci & Technol Ctr, Lab Ocean Dynam & Climate, Qingdao, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Weidong,Wang, Jianing,Wang, Fan,et al. Deep Eddy Energy in the Southern Philippine Basin[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2025,130(7):21. |
| APA | Ma, Weidong,Wang, Jianing,Wang, Fan,&Zhang, Hang.(2025).Deep Eddy Energy in the Southern Philippine Basin.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,130(7),21. |
| MLA | Ma, Weidong,et al."Deep Eddy Energy in the Southern Philippine Basin".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 130.7(2025):21. |
入库方式： OAI收割
来源：海洋研究所
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