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Victoria University Antarctic Research Expedition Science and Logistics Reports 1984-85: VUWAE 29

Abstract

Abstract

Sedimentation in Granite Harbour-Mackay Glacier system (140 km north of Scott Base) is dominated by the basal debris of the Mackay Glacier, the flow rate of which averages 226.5 ma−1, both summer and winter. Basal debris approximate 7.5% by weight of basal ice. Aeolian debris is an important sediment Source contributing about 23,000 tonnes a−1 into the system. Summer biogenic Activity results in diatomaceous muds and faecal material collecting in the deepest sinks within the harbour. Redistribution of sediments as a result of current activity will be identifiable from vertical water column profiles of both salinity and suspended particulate.