Author(s): Xiaodong Chen; Knut Hoyland; Shungying Ji
Linked Author(s): Knut Hoyland
Keywords: No keywords
Abstract: To study the growing process of saline ice, fresh water ice were submerged into saline water with different salinities (0,9. 11,22.4, 32.6ppt) and temperatures (0.2, -1.6, -1.75℃). During the warming-up process, the temperature was measured by thermistor string while the ice-water interface was recorded by photographing. From the result, it shows that the ice temperature is independent on water salinity. However, the ice growth is strongly influences by water salinity and temperature. In the saline ice growth, the interface appears a needle period, in which duration is dependent on the difference between freezing point and water temperature. The result denotes that the ice needle exists throughout the experiments. Due to the needle size is dependent on the temperature difference, the ice texture behaves granular in the early stage and columnar in the late stage. For saline ice, the ice growth is driven by latent and convective energies. Therefore, the new ice growth increases with increasing water temperature and has complicated trend with water salinity.
Year: 2018