普里兹湾海域的夏季上层水及其北向运动  

WATER MASSES AND THEIR NORTHWARD EXTENSION IN THE UPPER OCEAN OF PRYDZ BAY, ANTARCTICA

作　　者：蒲书箴[1] 董兆乾 胡筱敏[1] 于非[1] 

机构地区：[1]国家海洋局第一海洋研究所,青岛266003 [2]中国极地研究所,上海200129

出　　处：《极地研究》2000年第3期157-168,共12页Chinese Journal of Polar Research

基　　金：国家自然科学基金!(498360 1 0 )资助项目;国家"九五"攻关项目!(98-92 7-0 1 )

摘　　要：本文利用中国第 1 5次南极科学考察普里兹湾及邻近水域观测的 CTD资料 ,研究并分析了普里兹湾及其邻近洋域上层的水团分布。确定了普里兹湾夏季近岸水 ,普里兹湾夏季表层水 ,普里兹湾陆架水和南极绕极深层水的范围、深度和温盐特性。在此基础上 ,进一步发现了普里兹湾陆架水的北向扩展。讨论了其北向扩展的热力学和动力学特征。这些特征涉及到逆温层的厚度、垂向温度和温度梯度最小值的存在 。In this paper, CTD observational data obtained during the 15th Chinese National Antarctic Research Expedition (CHINARE-15) in the Southern Ocean are used to analyze and study water masses, their distributions and thermohaline characteristics in the Prydz Bay and its adjacent region. And water masses within and north of Prydz Bay are identified as summer coastal surface water, the Prydz Bay winter water, the Prydz Bay shelf water, and the Circumpolar Deep Water. Based on the above discussion, the northward extension of the Prydz Bay shelf water is found. Then the thermodynamic and the dynamic characteristics are further discussed, which are the inversion layer depth of the water temperature, the locations of the minima of the vertical temperature distribution and the temperature vertical gradient in the water column, as well as the baroclinity and the effect of Coriolis deflection force.

关 键 词：水团 北向扩展 夏季 分布 陆架水 深层水 南大洋 

分 类 号：P728.1[天文地球—海洋科学] P731.16