Advances in research of the mid-deep South China Sea circulation  

作　　者：Dongxiao WANG Qiang WANG Shuqun CAI Xiaodong SHANG Shiqiu PENG Yeqiang SHU Jingen XIAO Xiaohui XIE Zhiwei ZHANG Zhiqiang LIU Jian LAN Dake CHEN Huijie XUE Guihua WANG Jianping GAN Xinong XIE Rui ZHANG Hui CHEN Qingxuan YANG 

机构地区：[1]State Key Laboratory of Tropical Oceanography,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China [2]School of Marine Science and Technology,Tianjin University,Tianjin 300072,China [3]State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,MNR,Hangzhou 310012,China [4]Key Laboratory of Physical Oceanography,MOE,Ocean University of China,Qingdao 266003,China [5]Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China [6]Institute of Atmospheric Sciences,Fudan University,Shanghai 200438,China [7]Department of Mathematics and Division of Environment,Hong Kong University of Science and Technology,Hong Kong 999077,China [8]College of Marine Science and Technology,China University of Geosciences,Wuhan 430074,China [9]College of Oceanic and Earth,Xiamen University,Xiamen 361102,China

出　　处：《Science China Earth Sciences》2019年第12期1992-2004,共13页中国科学（地球科学英文版）

基　　金：supported by the National Key Research and Development Program of China (Grant No. 2018YFC1405701);the Key Research Program of Frontier Sciences, CAS (Grant No. QYZDJ-SSW-DQC022);the National Natural Science Foundation of China (Grant Nos. 41521005, 41730535, 41776036, 41676001 & 41776026);the National Key Research and Development Program (Grant No. 2017YFA0603201)

摘　　要：The South China Sea(SCS)is a large marginal sea connecting the Indian and Pacific oceans.Under the factors of monsoons,strait transport,and varied bathymetry,the SCS presents a three-layer structure and strong diapycnal mixing which is far greater than that in the open ocean.Theoretical analysis and observations reveal that internal tides,internal solitary waves,and strong winds are the sources of the strong mixing in the northern SCS.A major consequence of the strong mixing is an active mid-deep circulation system.This system promotes exchange of water between the SCS and adjacent oceans,and also regulates the upper layer of wind-driven circulation,making the 3 dimensional SCS circulation clearly different from that in other tropical and subtropical marginal seas.The mass transport capacity of the mid-deep circulation has a substantial impact on marine sedimentation,the biogeochemical cycle,and other processes in the SCS.This paper summarizes the recent advances in middeep sea circulation dynamics of the SCS,and discusses the opportunities and challenges in this area.The South China Sea(SCS) is a large marginal sea connecting the Indian and Pacific oceans.Under the factors of monsoons,strait transport,and varied bathymetry,the SCS presents a three-layer structure and strong diapycnal mixing which is far greater than that in the open ocean.Theoretical analysis and observations reveal that internal tides,internal solitary waves,and strong winds are the sources of the strong mixing in the northern SCS.A major consequence of the strong mixing is an active mid-deep circulation system.This system promotes exchange of water between the SCS and adjacent oceans,and also regulates the upper layer of wind-driven circulation,making the 3 dimensional SCS circulation clearly different from that in other tropical and subtropical marginal seas.The mass transport capacity of the mid-deep circulation has a substantial impact on marine sedimentation,the biogeochemical cycle,and other processes in the SCS.This paper summarizes the recent advances in middeep sea circulation dynamics of the SCS,and discusses the opportunities and challenges in this area.

关 键 词：Mid-deep SOUTH China Sea CIRCULATION Diapycnal mixing MULTI-SCALE processes interaction 

分 类 号：P73[天文地球—海洋科学]