海洋科学2017，Vol.41Issue(10)：67-76,10.DOI:10.11759/hykx20170508002
热带西太平洋北赤道逆流区涡旋统计分析
Statistical analysis of North Equatorial Countercurrent area in tropical western Pacific
摘要
Abstract
With the development of ocean technology,more and more mesoscale ocean processes have been revealed.Mesoscale eddies are an important mesoscale ocean process that has been the subject of much research in recent decades.However,research on the spatial distribution,seasonal variation,and movement characteristics of mesoscale eddies in the northwestern Pacific is lacking.In this paper,we statistically analyzed the spatial distribution of eddies in the northwestern tropical Pacific using the eddy dataset provided by Chelton.We found that more eddies are generated in the North Equatorial Countercurrent (NECC) area (A zone,120°-180°E,4°-6°N) where less research effort has been focused.Moreover,the eddy radii,amplitudes,lifecycles,and nonlinear intensities are larger,the movement distances are farther,and the meridional eddy movement distances obey a gamma distribution in the A zone.Most eddies move southward in the region close to the western boundary,and most move northward far away from the western boundary.The quantity of eddies generated in the A zone exhibits obvious seasonal variation,which is mainly affected by the shear intensity of the currents.At the same time,eddy formation is affected by the ENSO in this area,and its mechanism requires further study.关键词
中尺度涡/北赤道逆流/特征分布/季节变化/ENSOKey words
mesoscale eddies/North Equatorial Countercurrent/characteristic distribution/seasonal variation/ENSO分类
海洋科学引用本文复制引用
律明坤,臧楠,王凡..热带西太平洋北赤道逆流区涡旋统计分析[J].海洋科学,2017,41(10):67-76,10.基金项目
国家自然科学基金项目(41406014) （41406014）
中国科学院战略性先导科技专项(XDA11010204) （XDA11010204）
“全球变化与海气相互作用”专项(GASI-03-01-01-05) （GASI-03-01-01-05）
山东省科技发展计划(2013GRC31503)National Natural Science Foundation of China,No.41406014 （2013GRC31503）
the Strategic Priority Research Program of Chinese Academy of Sciences,No.XDA11010201 （）
the Global Change and Air-Sea Interaction Program,No.GASI-03-01-01-05 （）
the Scientific and Technological Development Plan Project of Shandong Province,No.2013GRC31503 （）
