摘要
利用１９９８年１１月～１９９９年２月中国第１５次南极考察资料，讨论了普里兹湾附近陆缘水边界（ＣＷＢ）两侧的水团分布，以及ＣＷＢ的中心位置、锋面宽度、锋面强度、锋面的垂直深度和垂直厚度等物理特征的空间变化．并与１９９２年１２月～１９９３年２月中国第９次南极考察资料进行了比较，说明了ＣＷＢ的时间变化。同时，还进一步分析了ＣＷＢ两侧海水运动的各向异性，以及动力高度场的形势。指出了动力高度槽、ＣＷＢ锋面位置、流场切变线的一致性，合理地解释了绕极深层水涌升的动力学原因．
Based on the data obtained during the 15th Antarctic Expedition of China between November 1998 and February 1999, the paper dscusses the water masses distributed on both sides of the Continental Water Boundary (CWB) as well as the spacial variability of the physical characteristics of the central location, the frontal width, the frontal strength, the vertical depth, and the vertical thickness for CWB. The above results are compared with the results from the data obtained during the 9th Antarctic Expedition of China between December 1992 and February 1993, and the temporal variability of those characteristics is discussed. In addition, the inhomogeneity of the kinematic characteristics and the patterns of the dynamic heights for those water masses located on both sides of CWB are illustrated. As it is pointed out in the paper, the trough in the dynamic height field is identified with the frontal location of CWB and the oceanic current shear. Furthermore, the dynamic reason for the upwelling of the circumpolar deep water can be understood by the explanation described in the paper.
出处
《海洋通报》
CAS
CSCD
北大核心
2000年第6期1-9,共9页
Marine Science Bulletin
基金
国家自然科学基金(编号:49836010)
国家"九五"攻关项目(98-927-01)资助
