Deformation-Induced Melting in the Margins of the West Antarctic Ice Streams
Flow of glacial ice in the West Antarctic Ice Sheet localizes in narrow bands of fast-flowing ice streams bordered by ridges of nearly stagnant ice, but our understanding of the physical processes that generate this morphology is incomplete. Here we study the thermal and mechanical properties of ice...
Published in: | Journal of Geophysical Research: Earth Surface |
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ftharvardudash:oai:dash.harvard.edu:1/12992315 2023-05-15T13:36:21+02:00 Deformation-Induced Melting in the Margins of the West Antarctic Ice Streams Suckale, Jenny Platt, John Daniel Perol, Thibaut Rice, James Robert 2014 application/pdf http://nrs.harvard.edu/urn-3:HUL.InstRepos:12992315 https://doi.org/10.1002/2013jf003008 en_US eng Wiley-Blackwell doi:10.1002/2013jf003008 http://darkwing.uoregon.edu/~rempel/_readings/week6_suckale.pdf http://www.researchgate.net/profile/James_Rice9/publication/260756322_Deformation-induced_melting_in_the_margins_of_the_West-Antarctic_ice_streams/links/542852ec0cf26120b7b566e2 http://esag.harvard.edu/rice/249_SuckalePlattPerolRice_IceStreamThermomech_JGR14.pdf Journal of Geophysical Research: Earth Surface Suckale, Jenny, John D. Platt, Thibaut Perol, and James R. Rice. 2014. Deformation-Induced Melting in the Margins of the West Antarctic Ice Streams. Journal of Geophysical Research: Earth Surface 119, no. 5: 1004–1025. 2169-9003 http://nrs.harvard.edu/urn-3:HUL.InstRepos:12992315 ice streams shear margin West Antarctica Siple Coast Dragon margin deformation-induced melting Journal Article 2014 ftharvardudash https://doi.org/10.1002/2013jf003008 2022-04-04T20:51:43Z Flow of glacial ice in the West Antarctic Ice Sheet localizes in narrow bands of fast-flowing ice streams bordered by ridges of nearly stagnant ice, but our understanding of the physical processes that generate this morphology is incomplete. Here we study the thermal and mechanical properties of ice-stream margins, where flow transitions from rapid to stagnant over a few kilometers. Our goal is to explore under which conditions the intense shear deformation in the margin may lead to deformation-induced melting. We propose a 2-D model that represents a cross section through the ice stream margin perpendicular to the downstream flow direction. We limit temperature to the melting point to estimate melt rates based on latent heat. Using rheology parameters as constrained by laboratory data and observations, we conclude that a zone of temperate ice is likely to form in active shear margins. Earth and Planetary Sciences Engineering and Applied Sciences Accepted Manuscript Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet West Antarctica Harvard University: DASH - Digital Access to Scholarship at Harvard Antarctic Siple ENVELOPE(-83.917,-83.917,-75.917,-75.917) Siple Coast ENVELOPE(-155.000,-155.000,-82.000,-82.000) West Antarctic Ice Sheet West Antarctica Journal of Geophysical Research: Earth Surface 119 5 1004 1025 |
institution |
Open Polar |
collection |
Harvard University: DASH - Digital Access to Scholarship at Harvard |
op_collection_id |
ftharvardudash |
language |
English |
topic |
ice streams shear margin West Antarctica Siple Coast Dragon margin deformation-induced melting |
spellingShingle |
ice streams shear margin West Antarctica Siple Coast Dragon margin deformation-induced melting Suckale, Jenny Platt, John Daniel Perol, Thibaut Rice, James Robert Deformation-Induced Melting in the Margins of the West Antarctic Ice Streams |
topic_facet |
ice streams shear margin West Antarctica Siple Coast Dragon margin deformation-induced melting |
description |
Flow of glacial ice in the West Antarctic Ice Sheet localizes in narrow bands of fast-flowing ice streams bordered by ridges of nearly stagnant ice, but our understanding of the physical processes that generate this morphology is incomplete. Here we study the thermal and mechanical properties of ice-stream margins, where flow transitions from rapid to stagnant over a few kilometers. Our goal is to explore under which conditions the intense shear deformation in the margin may lead to deformation-induced melting. We propose a 2-D model that represents a cross section through the ice stream margin perpendicular to the downstream flow direction. We limit temperature to the melting point to estimate melt rates based on latent heat. Using rheology parameters as constrained by laboratory data and observations, we conclude that a zone of temperate ice is likely to form in active shear margins. Earth and Planetary Sciences Engineering and Applied Sciences Accepted Manuscript |
format |
Article in Journal/Newspaper |
author |
Suckale, Jenny Platt, John Daniel Perol, Thibaut Rice, James Robert |
author_facet |
Suckale, Jenny Platt, John Daniel Perol, Thibaut Rice, James Robert |
author_sort |
Suckale, Jenny |
title |
Deformation-Induced Melting in the Margins of the West Antarctic Ice Streams |
title_short |
Deformation-Induced Melting in the Margins of the West Antarctic Ice Streams |
title_full |
Deformation-Induced Melting in the Margins of the West Antarctic Ice Streams |
title_fullStr |
Deformation-Induced Melting in the Margins of the West Antarctic Ice Streams |
title_full_unstemmed |
Deformation-Induced Melting in the Margins of the West Antarctic Ice Streams |
title_sort |
deformation-induced melting in the margins of the west antarctic ice streams |
publisher |
Wiley-Blackwell |
publishDate |
2014 |
url |
http://nrs.harvard.edu/urn-3:HUL.InstRepos:12992315 https://doi.org/10.1002/2013jf003008 |
long_lat |
ENVELOPE(-83.917,-83.917,-75.917,-75.917) ENVELOPE(-155.000,-155.000,-82.000,-82.000) |
geographic |
Antarctic Siple Siple Coast West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Antarctic Siple Siple Coast West Antarctic Ice Sheet West Antarctica |
genre |
Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet West Antarctica |
op_relation |
doi:10.1002/2013jf003008 http://darkwing.uoregon.edu/~rempel/_readings/week6_suckale.pdf http://www.researchgate.net/profile/James_Rice9/publication/260756322_Deformation-induced_melting_in_the_margins_of_the_West-Antarctic_ice_streams/links/542852ec0cf26120b7b566e2 http://esag.harvard.edu/rice/249_SuckalePlattPerolRice_IceStreamThermomech_JGR14.pdf Journal of Geophysical Research: Earth Surface Suckale, Jenny, John D. Platt, Thibaut Perol, and James R. Rice. 2014. Deformation-Induced Melting in the Margins of the West Antarctic Ice Streams. Journal of Geophysical Research: Earth Surface 119, no. 5: 1004–1025. 2169-9003 http://nrs.harvard.edu/urn-3:HUL.InstRepos:12992315 |
op_doi |
https://doi.org/10.1002/2013jf003008 |
container_title |
Journal of Geophysical Research: Earth Surface |
container_volume |
119 |
container_issue |
5 |
container_start_page |
1004 |
op_container_end_page |
1025 |
_version_ |
1766077535471271936 |