摘要
本文依据越南离岸流等将该海域分为南北两部分,基于1993年1月1日—2020年12月31日的海平面异常卫星高度计数据,追踪了南海西南海域中尺度涡的传播轨迹,研究了中尺度涡的传播特征。结果表明:北部区域气旋涡传播方向更易沿等深线传播,反气旋涡更易跨地形由深水向浅水运动;北部区域冬半年(秋分至春分)会有更多的气旋涡偏北向运动,更多反气旋涡偏南向运动,夏半年(春分至秋分)则会有更多的反气旋涡偏北向运动,更多的气旋涡偏南向运动;南部区域夏半年反气旋涡的传播路径最为独特,主要向东北方向运动,气旋涡则主要向西南方向运动,二者方向完全相反。本文研究结果可为全面了解南海旋涡的传播及其物理机制提供支撑。
This paper divides the southwestern South China Sea(SCS)into north and south according to the Vietnamese rip current and so on,and tracks the propagation trajectory of mesoscale eddies in the southwestern SCS based on the sea level anomalous satellite altimeter data from January 1,1993 to December 31,2020,and studies the propagation characteristics of mesoscale eddies.The results show that in the northern area,the propagation direction of cyclone eddy is easier to propagate along the isobath,and the anticyclone eddy is more likely to move from deep water to shallow water across the terrain.In the winter half of the year(autumn to spring equinox),there will be more northerly movement of cyclonic eddy and more southerly movement of anticyclonic eddy,and more northward movement of anticyclonic eddy and more southerly movement of cyclonic eddy in the summer half of the year(spring to autumn equinox).The southern region has the most unique propagation path of anticyclonic eddies in the summer half of the year,mainly moving northeast,while cyclonic eddies mainly moving southwest,and the two directions are completely opposite.The research results can provide support for a comprehensive understanding of the propagation and physical mechanisms of South China Sea eddies.
作者
张舒妍
裘是
郭佳祺
张哲恩
陈学恩
Zhang Shuyan;Qiu Shi;Guo Jiaqi;Zhang Zheen;Chen Xueen(College of Oceanic and Atmospheric Science,Ocean University of China,Qingdao 266100,China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2024年第6期1-10,共10页
Periodical of Ocean University of China
基金
国家自然科学基金项目“背景流和水平非均匀层结对吕宋海峡内潮生成和演变的影响机制研究”(42276011)资助。
关键词
南海西南海域
中尺度涡
传播特征
统计特征
the southwestern South China Sea
mesoscale eddies
propagation characteristics
statistical characteristics
