Author(s): David M. Cole; Hajo Eicken; Lewis H. Shapiro; Karoline Frey
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Keywords: No Keywords
Abstract: A field study of first-year sea ice has been under way for several years at two sites near Barrow, Alaska. Among the objectives of the study is to document the development and evolution of the physical properties of the ice. The thermal regime, ice growth and snow cover at the field sites have been monitored continuously, and periodic observations have been made of the bulk physical properties. The flaw structure has been examined on the scale of the thickness of the sheet to the scale of individual brine inclusions. Full-depth sections (monolithic slabs cut through the entire thickness of the sheet) revealed a substantial number of high brine porosity layers, and large arrays of diagonal banding features were occasionally observed. Photomicrography was employed to characterize the constituent inclusions of both the horizontal layering and diagonal banding features. The paper describes the methods used to obtain the full-depth sections and micrographs and the results of a quantitative image analysis are presented.
Year: 2002