Author(s): T. Kawamura; O. Matsubaya; A. Sato; Y. Kamata
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Keywords: No Keywords
Abstract: Contribution of snow cover to sea ice growth has recently become of major interest. The contribution is due to two specific types of sea ice growth process, i. e., snow-ice and superimposed-ice growth. An experimental study was conducted in a cold laboratory to clarify physical and isotopic processes controlling their formation. The sea ice growth progress was observed through windows of a tank, and temperature variations were recorded. Structure of the collected sea ice samples was analyzed, and ice properties, i. e. salinity and isotopic compositions, were measured. The results revealed different ice properties between the snow- and superimposed- ice as well as between granular and columnar ice. The relationship of hydrogen and oxygen isotopic compositions could determine the origin of water forming snow- and superimposed-ice and specify the mixing processes.
Year: 2004