Glaciohydraulic supercooling in former ice sheets?

Grahame J. Larson; Daniel E. Lawson; Edward B. Evenson; Richard B. Alley; Óskar Knudsen; Mathew S. Lachniet; Staci L. Goetz

doi:10.1016/j.geomorph.2004.12.009

Glaciohydraulic supercooling in former ice sheets?

Grahame J. Larson, Daniel E. Lawson, Edward B. Evenson, Richard B. Alley, Óskar Knudsen, Mathew S. Lachniet, Staci L. Goetz

Geosciences

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Glaciohydraulic supercooling has been observed at many modern glaciers and has been shown to generate thick zones of debris-laden basal ice which, when exposed to melting, can produce debris-flow and melt-out till deposits, as well as hummocky terrain. Glaciohydraulic supercooling probably occurred in former continental ice sheets, especially where ice flowed out of deep basins, or up steep slopes. Evidence to support glaciohydraulic supercooling in former ice sheets, however, is limited but may include sedimentary sequences of melt-out till and debris-flow deposits and hummocky terrain along the distal rim of overdeepenings and crests of adverse bed slopes.

Original language	English (US)
Pages (from-to)	20-32
Number of pages	13
Journal	Geomorphology
Volume	75
Issue number	1-2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.geomorph.2004.12.009
State	Published - Apr 2006

All Science Journal Classification (ASJC) codes

Earth-Surface Processes

Access to Document

10.1016/j.geomorph.2004.12.009

Cite this

@article{419bda36124847dda7efe8e3ad81173b,

title = "Glaciohydraulic supercooling in former ice sheets?",

abstract = "Glaciohydraulic supercooling has been observed at many modern glaciers and has been shown to generate thick zones of debris-laden basal ice which, when exposed to melting, can produce debris-flow and melt-out till deposits, as well as hummocky terrain. Glaciohydraulic supercooling probably occurred in former continental ice sheets, especially where ice flowed out of deep basins, or up steep slopes. Evidence to support glaciohydraulic supercooling in former ice sheets, however, is limited but may include sedimentary sequences of melt-out till and debris-flow deposits and hummocky terrain along the distal rim of overdeepenings and crests of adverse bed slopes.",

author = "Larson, {Grahame J.} and Lawson, {Daniel E.} and Evenson, {Edward B.} and Alley, {Richard B.} and {\'O}skar Knudsen and Lachniet, {Mathew S.} and Goetz, {Staci L.}",

note = "Funding Information: The authors wish to thank the Cold Regions Research and Engineering Laboratory and U.S. National Science Foundation (grant DACA89-95-K-0007) for financial support. We also would like to thank Dave Mickelson, Thomas Lowell and Ardith Hansel for their critical reviews of this manuscript. Their guidance and suggestions were much appreciated and helped to improve it. Special thanks is extended to B. Stevenson and K. Stevenson of Glacier Park Resort, Alaska, for their friendship and logistical support while we were working at the Matanuska Glacier. ",

year = "2006",

month = apr,

doi = "10.1016/j.geomorph.2004.12.009",

language = "English (US)",

volume = "75",

pages = "20--32",

journal = "Geomorphology",

issn = "0169-555X",