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| Enhanced turbulent mixing by an anticyclonic eddy observed in the subtropical Northwestern Pacific Ocean | |
Chen, Zifei1,2,3; Yu, Fei1,2,3,4,5; Wang, Jianfeng1,3,4,5; Nan, Feng1,3,4,5; Ren, Qiang1,2,3 ; Xu, Anqi1,2,3
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| 2021-06-01 | |
| Source Publication | REGIONAL STUDIES IN MARINE SCIENCE
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| ISSN | 2352-4855 |
| Volume | 45Pages:10 |
| Corresponding Author | Yu, Fei(yuf@qdio.ac.cn) |
| Abstract | Mesoscale eddies play an essential role in transporting energy and modulating the spatial and temporal distribution of turbulent mixing. By analyzing the microstructure and hydrographic observation data in the subtropical Northwestern Pacific Ocean (STNWP), we found that the turbulent kinetic energy (TKE) dissipation rate influenced by an anticyclonic eddy (AE) in the thermocline was enhanced by at least 3-6 times over the background dissipation level. Most turbulent dissipation is driven by the break of internal wave. The AE effect as the reason for the increasing strength of internal wave energy below the mixed layer indicated a linkage between turbulent dissipation and AE. After discussing the gradient Richardson number, we found that only when the two factors of large internal wave energy and shear instability occurred together could the dissipation rate be enhanced, ultimately promoting turbulent mixing. Moreover, the internal wave field was found to have a higher inertial frequency in the regions influenced by AE than in the background regions where the frequency of the internal wave was dominated mainly by the near-inertial frequency. Therefore, AE can introduce an important, new spatial distribution of internal wave energy, which has a potential influence on turbulent mixing. (C) 2021 Published by Elsevier B.V. |
| Keyword | Turbulent mixing Anticyclonic eddy Internal wave |
| DOI | 10.1016/j.rsma.2021.101830 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2017YFC1403401] ; Global Climate Changes and Air-sea Interaction Program[GASI02-PAC-STMSspr] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406401] |
| WOS Research Area | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| WOS Subject | Ecology ; Marine & Freshwater Biology |
| WOS ID | WOS:000670142200008 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/176967 |
| Collection | 海洋环流与波动重点实验室 |
| Corresponding Author | Yu, Fei |
| Affiliation | 1.Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 5.Pilot Natl Lab Marine Sci & Technol Qingdao, Marine Dynam Proc & Climate Funct Lab, Qingdao 266237, Peoples R China |
| First Author Affilication | Institute of Oceanology, Chinese Academy of Sciences |
| Corresponding Author Affilication | Institute of Oceanology, Chinese Academy of Sciences; Center for Ocean Mega-Science, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Chen, Zifei,Yu, Fei,Wang, Jianfeng,et al. Enhanced turbulent mixing by an anticyclonic eddy observed in the subtropical Northwestern Pacific Ocean[J]. REGIONAL STUDIES IN MARINE SCIENCE,2021,45:10. |
| APA | Chen, Zifei,Yu, Fei,Wang, Jianfeng,Nan, Feng,Ren, Qiang,&Xu, Anqi.(2021).Enhanced turbulent mixing by an anticyclonic eddy observed in the subtropical Northwestern Pacific Ocean.REGIONAL STUDIES IN MARINE SCIENCE,45,10. |
| MLA | Chen, Zifei,et al."Enhanced turbulent mixing by an anticyclonic eddy observed in the subtropical Northwestern Pacific Ocean".REGIONAL STUDIES IN MARINE SCIENCE 45(2021):10. |
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