关键词: 普里兹湾;水团;北向扩展

Abstract:

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.