Winter snow cover on sea ice in the Weddell Sea

摘要: Measurements of snow thickness, temperature, salinity, density, and stratigraphy acquired during the 1992 Winter Weddell Gyre Study are presented. Results indicate that winter cover on sea ice in Sea is extremely variable. Extreme fluctuations Antarctic synoptic conditions (air precipitation, humidity, wind speed) occur austral winter. They result unique modifications additions to layer aging process act stabilize an otherwise easily wind-redistributed shallow develop well-packed drift features. The latter even over relatively undeformed areas have a significant localized effect thickness distribution. Significant variability grain size (mean 2.73±3.12 mm) density (0.32±0.09 g cm−3) observed as cyclical switches between high- low-temperature gradient metamorphism. Multiple icy layers multiple thaw-freeze events. One such event occurred 3-day station, which air temperature rose by 22°C 12 hours (to approximately 0°C). This paper also examines mechanisms for flooding snow-ice interface, including loading. Even where not factor, immediately above interface commonly damp saline (>10‰). Limitations data set discussed, comparisons drawn with other experiments.