Measurements of Water Pressure in Moulins as Part of a Movement Study of the White Glacier, Axel Heiberg Island, Northwest Territories, Canada

• Published in: Journal of Glaciology
• Main Author: Iken, Almut
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 1972
• Subjects: Earth-Surface Processes; Northwest Territories; Canada; Heiberg; Axel Heiberg Island; White Glacier; glacier*; Journal of Glaciology
• Online Access: http://dx.doi.org/10.1017/s0022143000022486; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022486

Abstract In 1970 water pressure was measured in several moulins on the White Glacier. Pressure variations in some moulin channels extended over the full measuring range of the instruments (0–1 and 0–2 bar above atmospheric pressure), even at depths of less than 50 m below the surface. Measurements at different depths showed that total pressure variations were sometimes greater than this. The pressure data are compared with variations in the surface velocity of the glacier.