利用drifter资料分析南海北部涡旋特征  

Analysis on Eddy Characteristics from Drifter Data in the Northern South China Sea

作　　者：刘玉红[1] 谭成伟 冯伟伟 佟晓辉 

机构地区：[1]海军海洋测绘研究所 [2]65061部队 [3]61769部队

出　　处：《海洋测绘》2017年第5期80-82,共3页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41404006)

摘　　要：利用卫星跟踪的drifter表面漂流浮标轨迹资料,对南海北部的涡旋特征进行了时空分布统计分析,特别是卫星高度计资料无法分辨出的次级中尺度涡旋的特征,并初步分析了其动力机理。研究发现南海北部半径小于10km的次级涡旋要占所有涡旋的绝大部分,涡旋平均半径可达11.7km,反气旋涡数量与气旋涡数量之比约为2.6∶1。研究结果可为未来在南海布放drifter浮标提供技术参考。Cyclonic and anticyclonic eddies in the northern South China Sea （SCS） are stat ist ically characterized based on the satellite-tracked Lagrangian drif ters, especially the submesoscale eddies which cannot be distinguished using the satellite altimeter data,and the dynamical mechanisms are analyzed.Our study shows that the submesoscale eddies whose radius are smaller than 10 km account for the most part of al l the eddies. The mean radius is 11.7 km,and the rat io of the number of anticyclonic eddies and cyclonic eddies is 2.6 ： l .T h e result can be considered as the technical reference for the deployment of drifters in the SCS in the future.

关 键 词：涡旋 drifter浮标 髙度计 时空分布 南海 

分 类 号：P731[天文地球—海洋科学]