引用本文:	邹童,徐勤博,周春,张冬青.南海中尺度涡对深层流调控作用的个例研究.海洋与湖沼,2022,53(6):1299-1310.

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南海中尺度涡对深层流调控作用的个例研究
邹童^1,2, 徐勤博^1,2, 周春^1,2,3,4, 张冬青^1,2
1.中国海洋大学物理海洋教育部重点实验室山东青岛 266100;2.中国海洋大学海洋与大气学院山东青岛 266100;3.青岛海洋科学与技试点国家实验室山东青岛 266299;4.中国海洋大学三亚海洋研究院海南三亚 572025

摘要:

南海深层环流作为印太海域热盐环流的重要组成部分,研究其时间变异特征对于深入认识印太海域大洋环流具有重要意义。中尺度涡作为南海极为活跃的动力过程,有观测显示其影响深度可超过2000m。结合海表面高度计资料与潜标观测资料,识别南海区域中尺度涡,并分析了中尺度涡对深层流场以及温度场的影响。针对三个中尺度涡的潜标实测结果表明:在涡旋经过时,海洋深层流动有明显的变异,表现在速度、温度方面,速度增加量能达到5.5cm/s,温度变异可达到0.02℃。涡旋经过时,海洋上层、深层流向呈相反态势,第一斜压模动能显著增强。

关键词: 深层流中尺度涡南海

DOI：10.11693/hyhz20220200029

分类号:P731.24

基金项目:国家自然科学基金,42076027号;海南省科技计划三亚崖州湾科技城联合项目,120LH059号。

附件

REGULATION OF MESOSCALE EDDIES FOR DEEP CURRENTS IN THE SOUTH CHINA SEA: A CASE STUDY

ZOU Tong^1,2, XU Qin-Bo^1,2, ZHOU Chun^1,2,3,4, ZHANG Dong-Qing^1,2

1.Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China;2.College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China;3.Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266299, China;4.Sanya Oceanographic Institution, Ocean University of China, Sanya 572025, China

Abstract:

South China Sea (SCS) is an important part of the thermohaline circulation in the Indian-Pacific Ocean. Understanding the temporal variability characteristics of deep circulation in the SCS is important for having insight into deep circulation in this region. SCS features very active dynamic process, in which mesoscale eddies have been observed who affects the currents at the depths of more than 2000 m. We identified mesoscale eddies in the SCS using altimeter data and mooring observations at three sites, and analyzed the influence of mesoscale eddies on deep-ocean velocity and temperature. Three mesoscale eddies were anatomized. Results of mooring observations show that the deep current varied obviously in velocity and temperature when the three eddies passed through, and the velocity could increase by 5.5 cm/s and the temperature could change by 0.02℃. When eddies pass, the direction of deep current is opposite to the upper current's and kinetic energy for the first baroclinic mode is enhanced obviously.

Key words: deep current mesoscale eddy South China Sea