Spatial structure of turbulent mixing of an anticyclonic mesoscale eddy in the northern South China Sea

作     者：Yongfeng Qi Chenjing Shang Huabin Mao Chunhua Qiu Changrong Liang Linghui Yu Jiancheng Yu Xiaodong Shang Yongfeng Qi;Chenjing Shang;Huabin Mao;Chunhua Qiu;Changrong Liang;Linghui Yu;Jiancheng Yu;Xiaodong Shang

作者机构：State Key Laboratory of Tropical OceanographySouth China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Shenzhen Key Laboratory of Marine Bioresources and Eco-environmental ScienceCollege of Life Science and OceanographyShenzhen UniversityShenzhen 518060China Ocean CollegeZhejiang UniversityZhoushan 316021China The Center for Coastal Ocean Science and TechnologySchool of Marine SciencesSun Yat-sen UniversityGuangzhou 510275China State Key Laboratory of RoboticsShenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2020年第39卷第11期

页      面：69-81页

核心收录：

学科分类：0710[理学-生物学] 0908[农学-水产] 07[理学] 0707[理学-海洋科学] 

基　　金：The National Key R&D Plan of China under contract Nos 2017YFC0305904,2017YFC0305804 and 2016YFC1401404 the National Natural Science Foundation of China under contract Nos 41876023,41630970,41806037,41706137 and 41806033 the Guangdong Science and Technology Project under contract Nos 2019A1515111044,2018A0303130047 and 2017A030310332 the Guangzhou Science and Technology Project under contract No.201707020037 the Natural Science Foundation of Shenzhen University under contract No.2019078 the Dedicated Fund for Promoting High-quality Economic Development in Guangdong Province(Marine Economic Development Project)under contract No.GDOE2019A03 the Independent Research Project Program of State Key Laboratory of Tropical Oceanography under contract Nos LTOZZ1902 and LTO1909 

主　　题：mesoscale eddy turbulent mixing South China Sea GHP parameterization Thorpe-scale method 

摘      要：Upper turbulent mixing in the interior and surrounding areas of an anticyclonic eddy in the northern South China Sea(SCS)was estimated from underwater glider data(May 2015)in the present study,using the Gregg-HenyeyPolzin parameterization and the Thorpe-scale *** observations revealed a clear asymmetrical spatial pattern of turbulent mixing in the anticyclonic eddy *** diffusivity(in the order of 10–3 m2/s)was found at the posterior edge of the anticyclonic mesoscale eddy;on the anterior side,diffusivity was one order of magnitude lower on *** asymmetrical pattern was highly correlated with the eddy kinetic *** shear variance on the posterior side,which is conducive to the triggering of shear instability,may be the main mechanism for the elevated *** addition,the generation and growth of sub-mesoscale motions that are fed by mesoscale eddies on their posterior side may also promote the occurrence of strong mixing in the studied *** results of this study help improve our knowledge regarding turbulent mixing in the northern SCS.