低温环境下海冰内部盐胞的重力去除实验

Sea ice is a composite complex mainly composed of solid pure ice,highly saline liquid brineand air pockets. In suitable low ambient temperature conditions, brine dropletsin sea ice would be expelled from drainage channelsunder the force of gravity, and sea ice with certain salinitycould be converted into fresh water. Experimental results showed that in the process of gravity-induced sea ice desalination, drainage volume and salinity varied with time and ambient temperature. If temperature could be controlled between -4.0oC to 3.0oC, drainage would be low in volume and high in salinity. Ambient temperature was a decisive and controlling factor in gravity-induced sea ice desalination, andheat preservation measures could affect the duration, volume and salinity of drainage during the process. With the rise of temperature, volume of drainage increased and salinity decreased. Rate of desalination and rate of water production expressed anegative correlation, where the higher the rate of water production, the lower the rate of desalination, and vice versa.