Direct Measurement of Basal Water Pressures: a Pilot Study
Open Access
- 1 January 1976
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Glaciology
- Vol. 16 (74) , 205-218
- https://doi.org/10.1017/s0022143000031543
Abstract
Bore-hole drilling techniques have been used to connect with the subglacial water system of the temperate South Cascade Glacier. The water level in a connecting bore hole probably represents a direct measurement of the basal water pressure over an area at least to m in extent. Fluctuations of up to 40 m in bore-hole water levels occur typically over periods of several days and often peak about 2 d after large changes in water input at the glacier surface. The long-term trend in bore-hole water levels supports the idea of seasonal storage and release of liquid water.Keywords
This publication has 8 references indexed in Scilit:
- Thermal Consequences of the Pressure Fluctuations in Intra- and Subglacial Water Drainage ChannelsJournal of Glaciology, 1976
- Water Pressure in Intra- and Subglacial ChannelsJournal of Glaciology, 1972
- Movement of Water in GlaciersJournal of Glaciology, 1972
- Measurements of Water Pressure in Moulins as Part of a Movement Study of the White Glacier, Axel Heiberg Island, Northwest Territories, CanadaJournal of Glaciology, 1972
- Flow in a Transverse Section of Athabasca Glacier, Alberta, CanadaJournal of Glaciology, 1971
- Internal Deformation and Thermal Anomalies in Lower Blue Glacier, Mount Olympus, Washington, U.S.A.Journal of Glaciology, 1970
- Water Pressure under a GlacierJournal of Glaciology, 1964
- Borehole measurements in the Athabasca GlacierJournal of Geophysical Research, 1963