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当前位置: 首页 > 文章 > 1993-2017年南海中尺度涡特征分析 广东海洋大学学报 2019 (5) 96-106
Position: Home > Articles > Analysis of Mesoscale Eddy Characteristics in the South China Sea from 1993 to 2017 Journal of Guangdong Ocean University 2019 (5) 96-106

1993-2017年南海中尺度涡特征分析

作  者：
曾伟强;张书文;马永贵;王同宇
单  位：
广东省近海海洋变化与灾害预警重点实验室/广东海洋大学海洋与气象学院
关键词：
南海;中尺度涡;识别;特征
摘  要：
【目的】研究1993-2017年南海中尺度涡的空间分布、季节变化、移动速度等特征。【方法】根据AVISO提供的地转流数据,应用Nencioli等人提出的涡旋识别算法。【结果】南海中尺度涡主要分布在南海东北部和越南东部海域,冬(夏)季有利于(反)气旋涡产生,中尺度涡以2.0～9.0cm/s的速度向西传播。【结论】南海气旋涡与反气旋逐年生成个数与ENSO事件相关,在1993-2007年期间,强(温和)厄尔尼诺年气旋涡生成数大于反气旋,弱(温和)拉尼娜年反气旋生成数大于气旋涡。2008-2017年,强厄尔尼诺年气旋涡生成数大于反气旋,温和拉尼娜年反气旋生成数小于气旋涡。在涡旋的生命周期内,涡旋半径与移动速度变化趋势相反。复杂海底地形会阻碍涡旋的传播。
译  名：
Analysis of Mesoscale Eddy Characteristics in the South China Sea from 1993 to 2017
作  者：
ZENG Wei-qiang;ZHANG Shu-wen;MA Yong-gui;WANG Tong-yu;Guangdong Key Laboratory of Coastal Ocean Variation and Disaster Prediction, College of Ocean and Meteorology, Guangdong Ocean University;Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology;
关键词：
South China Sea;;mesoscale eddy;;recognition;;characteristics
摘  要：
【Objective】The spatial distribution, seasonal variation and moving velocity in the South China Sea from 1993 to 2017 are studied.【Method】According to the geostrophic data provided by AVISO, the eddy recognition algorithm proposed by Nencioli et al was applied.【Results】The mesoscale eddies in the South China Sea mainly distribute in the northeastern South China Sea and the eastern Vietnam Sea. Winter(summer) is favorable for the generation of cyclone(anticyclone) eddies. Mesoscale vortices propagate westward at a speed of 2.0-9.0 cm/s.【Conclusion】The number of cyclonic eddies and anticyclones generated annually in the South China Sea is related to ENSO events. From 1993 to 2007, the number of cyclone vortices in strong(mild) El Nino years was larger than that in anticyclones, and in weak(mild) La Nina years was larger than that in cyclone vortices. From 2008 to 2017, the number of strong El Nino year cyclone vortices was larger than that of anticyclone, and the number of mild La Nina year anticyclone vortices was smaller than that of cyclone vortices. During the life cycle of the vortex, the change trend of the radius of the vortex is opposite to that of the moving velocity. Complex submarine topography can hinder the propagation of vortices.

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