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The Ice-Rock Interface and Basal Sliding Process as Revealed by Direct Observation in Bore Holes and Tunnels

Kamb, B. and Engelhardt, H. F. and Harrison, W. D. (1979) The Ice-Rock Interface and Basal Sliding Process as Revealed by Direct Observation in Bore Holes and Tunnels. Journal of Glaciology , 23 (89). pp. 416-419. ISSN 0022-1430 . http://resolver.caltech.edu/CaltechAUTHORS:20181116-112255845

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Abstract

The glacier bed, where basal sliding occurs, was reached by cable-tool drilling and sand-pump bailing in seven bore holes in Blue Glacier, Olympic National Park, Washington. Basal sliding velocities measured by bore-hole photography and confirmed by inclinometry are unexpectedly low, ranging from 0.3 to 3.0 cm/day and averaging 1.0 cm/day. This is much less than about half the surface velocity of 15 cm/day, which was the sliding-rate expected from earlier deformation measurements in bore holes made by thermal drilling alone.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1017/S0022143000030124DOIArticle
Additional Information:© 1979 International Glaciological Society.
Record Number:CaltechAUTHORS:20181116-112255845
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20181116-112255845
Official Citation:Kamb, B., Engelhardt, H., & Harrison, W. (1979). The Ice-Rock Interface and Basal Sliding Process as Revealed by Direct Observation in Bore Holes and Tunnels. Journal of Glaciology, 23(89), 416-419. doi:10.1017/S0022143000030124
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90965
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Nov 2018 19:49
Last Modified:16 Nov 2018 19:49

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