Energetics and variability of semidiurnal internal tides across the East China Sea shelf: Local generation versus remote forcing
文献类型：期刊论文
| 作者 | Yang, Tianyu7; Yang, Wei7; Zhang, Jing5,6; Xu, Zhenhua3,4; Wang, Weidong2,10; Guo, Jingsong8,9; Wei, Hao1 |
| 刊名 | PROGRESS IN OCEANOGRAPHY
 |
| 出版日期 | 2025-10-01 |
| 卷号 | 238页码:16 |
| 关键词 | Internal tides Energy budget Seasonal variation East China Sea |
| ISSN号 | 0079-6611 |
| DOI | 10.1016/j.pocean.2025.103563 |
| 通讯作者 | Yang, Wei(wei_yang@tju.edu.cn) |
| 英文摘要 | Internal tides (ITs) represent a crucial energy source driving turbulent mixing in stratified oceans. The East China Sea (ECS) continental margin is a major IT generation hotspot, yet IT variability across its broad shelf remains poorly constrained. Using high-resolution modeling with realistic forcing, we investigate semidiurnal IT energetics and variability in the ECS. Results show strong seasonality with peak IT activity in summer, primarily driven by stratification changes. Two distinct mechanisms contribute to the on-shelf ITs: (1) local generation at isolated topographic features and (2) onshore propagation from the ECS shelf break. Analysis demonstrates that local generation dominates the IT energy budget across the ECS shelf (1.32 GW integrated over depths shallower than 200 m), particularly at the prominent topographic rises including the Changjiang Estuary area and middle-shelf seamounts. Although the onshore-propagating IT energy fluxes from this region contribute relatively little to the total shelf energy budget, the shoreward IT propagation seriously regulate the local IT dynamics, especially in the outer shelf regions (100-200 m depth range). It has generated a pronounced cross-isobath asymmetry in IT energy transport, with onshore fluxes surpassing offshore fluxes by a factor of 2.3 at the 200-m isobath (0.25 GW vs. 0.11 GW) and 1.9 at the 100-m isobath (19.22 MW vs. 10.04 MW). These onshore energy fluxes, regulated by both shelf-break generation intensity and topographic criticality, peak northeast of Taiwan Island and along the northern ECS shelf break. These fluxes play a substantial role in modulating on-shelf IT variability in adjacent areas. |
| WOS关键词 | TEMPORAL VARIABILITY ; WAVES ; PROPAGATION ; PACIFIC ; NORTHEAST ; SURFACE ; SOUTH ; FLOW |
| 资助项目 | Foundation of China[42276009] ; Foundation of China[42249902] ; National Key Research and Development Program of China[2023YFC3108203] ; Scientific and Technological Innovation Project ; Laoshan Laboratory[LSKJ202202502] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001565177000001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203272]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Yang, Wei |
| 作者单位 | 1.Laoshan Lab, Qingdao, Peoples R China 2.Minist Nat Resources, Observat & Res Stn Bohai Rim Sea Level Change & Co, Tianjin, 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 5.Tianjin Univ Sci & Technol, Coll Marine & Environm Sci, TEDA, Tianjin, Peoples R China 6.TUST, Minist Educ, Key Lab Marine Resource Chem & Food Technol, Tianjin, Peoples R China 7.Tianjin Univ, Sch Marine Sci & Technol, Tianjin Key Lab Marine Environm Res & Serv, Tianjin, Peoples R China 8.Minist Nat Resources, Key Lab Marine Sci & Numer Modeling, Qingdao, Peoples R China 9.Minist Nat Resources, Inst Oceanog 1, Qingdao, Peoples R China 10.Minist Nat Resources, Natl Marine Data & Informat Serv, Tianjin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Tianyu,Yang, Wei,Zhang, Jing,et al. Energetics and variability of semidiurnal internal tides across the East China Sea shelf: Local generation versus remote forcing[J]. PROGRESS IN OCEANOGRAPHY,2025,238:16. |
| APA | Yang, Tianyu.,Yang, Wei.,Zhang, Jing.,Xu, Zhenhua.,Wang, Weidong.,...&Wei, Hao.(2025).Energetics and variability of semidiurnal internal tides across the East China Sea shelf: Local generation versus remote forcing.PROGRESS IN OCEANOGRAPHY,238,16. |
| MLA | Yang, Tianyu,et al."Energetics and variability of semidiurnal internal tides across the East China Sea shelf: Local generation versus remote forcing".PROGRESS IN OCEANOGRAPHY 238(2025):16. |
入库方式： OAI收割
来源：海洋研究所
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