利用Argo浮标的海面轨迹对惯性流的研究  

Study of Inertial Motions Using Surface Trajectories of Argo Floats

作　　者：赵云霞[1] 魏泽勋[1] 王新怡[1] 

机构地区：[1]国家海洋局第一海洋研究所,山东青岛266061

出　　处：《海洋技术》2011年第2期72-75,共4页Ocean Technology

基　　金：国家"863"计划重点课题--南海油气开发极端海洋动力环境监测技术研究与示范(2008AA09A401-05)

摘　　要：利用Argo浮标在海面漂流的轨迹信息,通过最小二乘法对轨迹进行拟合(主要是背景流和惯性流两者的拟合),得到了惯性流的流速和轨迹,从而对不同海域处海表的惯性流进行了研究分析。以5900465号浮标轨迹为例进行计算分析,结果表明在130°～140°E,30°～40°N范围的海区内,惯性流的最大值为43 cm/s,最小值为3 cm/s,平均值为16 cm/s。同时发现,拟合的轨迹与原始轨迹偏差较小,这说明了此方法的稳定性及可靠性。利用Argo浮标在海面漂流的轨迹信息提供了一个新的研究方面,可以有效利用现在布放在各个海区的浮标漂流轨迹资料,提取关于惯性流更多的信息,同时也为研究惯性流对其它海洋动力过程的影响及其相互关系等提供了一个较好办法。The study about the inertial motions in the ocean is conducted using the surface trajectories of Argo profiling floats by fitting the orbit information with the method of the least squares（mainly fitting background current and inertial current）.The analysis of No.5900465 Argo float＇s orbit shows that the maximum velocity of inertial motions are 43 cm/s,with a minimum value of 3 cm/s and a mean value of 16 cm/s in the region of 130°E to 140°E and 30°N to 40°N.Meanwhile,the little difference between the fitting trajectory and the original trajectory proves the method is stable and reliable.In principle,the more effective utilizing the Argo floats＇ drifting orbits data,the more information about inertial current we can obtain,furthermore,it also provides a new method to study the effect and relation between inertial current and other dynamic processes in the ocean.

关 键 词：惯性流 ARGO浮标 海面轨迹 

分 类 号：P731.21[天文地球—海洋科学]