How can low-pressure channels and deforming tills coexist subglacially?
Abstract Deforming till and low-pressure water channels are observed to coexist subglacially, but till also is observed to creep rapidly into low-pressure subglacial regions. A simple model shows that these observations are not contradictory. Creep of a thin till to a low-pressure region can occur f...
Published in: | Journal of Glaciology |
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Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1992
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Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0022143000009734 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000009734 |
Summary: | Abstract Deforming till and low-pressure water channels are observed to coexist subglacially, but till also is observed to creep rapidly into low-pressure subglacial regions. A simple model shows that these observations are not contradictory. Creep of a thin till to a low-pressure region can occur from a narrow zone only, and will lead to isolation of channels from till farther away. |
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