东海黑潮地转流计算中的零流面选取问题  

Study on the Selection of Level of No Motion for Calculating Geostrophic Flow in the East China Sea Kuroshio Area

作　　者：陈红霞[1] 刘娜[1] 袁业立[1] 华锋[1] 郑全安[1] 

机构地区：[1]国家海洋局第一海洋研究所

出　　处：《海洋科学进展》2007年第4期383-390,共8页Advances in Marine Science

基　　金：国家重点基础研究发展计划项目--东海黑潮结构变异及其与陆架水的相互作用(G1999043802);国家海洋局青年海洋科学基金--东海黑潮主流段环流子结构及其动力机制初步研究(2003201)

摘　　要：零流面的选取是东海黑潮地转流计算中的一个基本问题。通过对东海黑潮主流段PN断面上选取不同零流面时地转流计算结果的比较分析,考虑了东海黑潮的主要特征因子,确定了计算零流面的选取标准和选择结果。结果表明,为使计算结果可以反映实际的流速剖面结构,当水深大于700 m和小于700 m时可分别选取700 m层和底边界作为地转流动力计算零流面。The selection of level of no motion is a basic problem in calculating the geostrophic flow in the East China Sea Kuroshio area. In this paper, the criteria and results for selecting the level of no motion are determined by comparing and analyzing the calculated geostrophic flow results at PN section in the East China Sea Kuroshio mainstream area corresponding to different selections of level of no motion and taking the main characteristic factors of the East China Sea Kuroshio into consideration. It is shown from the analysis results that in order to meet the requirement that the calculated geostrophic flow results can reflect the practical current profile structure, it is practicable to select the 700 m level as level of no motion in case of water depth greater than 700 m and to select the bottom boundary as level of no motion in calculating the geostrophic flow.

关 键 词：东海黑潮 地转流 动力计算 零流面 PN断面 

分 类 号：P731.27[天文地球—海洋科学]