How can low-pressure channels and deforming tills coexist subglacially?
Open Access
- 1 January 1992
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Glaciology
- Vol. 38 (128) , 200-207
- https://doi.org/10.1017/s0022143000009734
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.Keywords
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