Thermodynamics of Freezing Puddles in the Autumn-Winter Period

摘要

The results of the field observation of freezing melted puddles on the drift ice in the Arctic Basin carried out in July-September of 2005 during cruise 23 of R/V Akademik Fedorov are analyzed,and a thermo-dynamical model of the process based on these results is developed.The essential features of the evolution of puddles in the period of autumn cooling were revealed.The unfrozen liquid layer was shown to be a qualitative component of the system that defines its behavior as a whole.We concluded that the sea ice growing from below is absent until the thickness of the frozen water reaches a critical value that is determined by its initial salinity.