Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet
Subglacial topography plays an important role in modulating the distribution and flow of basal water. Where topography predates ice sheet inception, it can also reveal insights into former tectonic and geomorphological processes. Although such associations are known in Antarctica, little considerati...
Published in: | Science |
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2013
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Online Access: | https://hdl.handle.net/1983/8a76012f-bb4e-45b5-b524-7aa61e21e7ab https://research-information.bris.ac.uk/en/publications/8a76012f-bb4e-45b5-b524-7aa61e21e7ab https://doi.org/10.1126/science.1239794 http://www.sciencemag.org/content/341/6149/997 |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/8a76012f-bb4e-45b5-b524-7aa61e21e7ab 2024-05-19T07:32:24+00:00 Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet Bamber, Jonathan L. Siegert, Martin J. Griggs, Jennifer A. Marshall, Shawn J. Spada, Giorgio 2013-08-30 https://hdl.handle.net/1983/8a76012f-bb4e-45b5-b524-7aa61e21e7ab https://research-information.bris.ac.uk/en/publications/8a76012f-bb4e-45b5-b524-7aa61e21e7ab https://doi.org/10.1126/science.1239794 http://www.sciencemag.org/content/341/6149/997 eng eng https://research-information.bris.ac.uk/en/publications/8a76012f-bb4e-45b5-b524-7aa61e21e7ab info:eu-repo/semantics/restrictedAccess Bamber , J L , Siegert , M J , Griggs , J A , Marshall , S J & Spada , G 2013 , ' Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet ' , Science , vol. 341 , no. 6149 , pp. 997-999 . https://doi.org/10.1126/science.1239794 BASAL MELT GLACIER article 2013 ftubristolcris https://doi.org/10.1126/science.1239794 2024-04-23T23:46:57Z Subglacial topography plays an important role in modulating the distribution and flow of basal water. Where topography predates ice sheet inception, it can also reveal insights into former tectonic and geomorphological processes. Although such associations are known in Antarctica, little consideration has been given to them in Greenland, partly because much of the ice sheet bed is thought to be relatively flat and smooth. Here, we present evidence from ice-penetrating radar data for a 750-km-long subglacial canyon in northern Greenland that is likely to have influenced basal water flow from the ice sheet interior to the margin. We suggest that the mega-canyon predates ice sheet inception and will have influenced basal hydrology in Greenland over past glacial cycles. Article in Journal/Newspaper Antarc* Antarctica glacier Greenland Ice Sheet University of Bristol: Bristol Research Science 341 6149 997 999 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
BASAL MELT GLACIER |
spellingShingle |
BASAL MELT GLACIER Bamber, Jonathan L. Siegert, Martin J. Griggs, Jennifer A. Marshall, Shawn J. Spada, Giorgio Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet |
topic_facet |
BASAL MELT GLACIER |
description |
Subglacial topography plays an important role in modulating the distribution and flow of basal water. Where topography predates ice sheet inception, it can also reveal insights into former tectonic and geomorphological processes. Although such associations are known in Antarctica, little consideration has been given to them in Greenland, partly because much of the ice sheet bed is thought to be relatively flat and smooth. Here, we present evidence from ice-penetrating radar data for a 750-km-long subglacial canyon in northern Greenland that is likely to have influenced basal water flow from the ice sheet interior to the margin. We suggest that the mega-canyon predates ice sheet inception and will have influenced basal hydrology in Greenland over past glacial cycles. |
format |
Article in Journal/Newspaper |
author |
Bamber, Jonathan L. Siegert, Martin J. Griggs, Jennifer A. Marshall, Shawn J. Spada, Giorgio |
author_facet |
Bamber, Jonathan L. Siegert, Martin J. Griggs, Jennifer A. Marshall, Shawn J. Spada, Giorgio |
author_sort |
Bamber, Jonathan L. |
title |
Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet |
title_short |
Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet |
title_full |
Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet |
title_fullStr |
Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet |
title_full_unstemmed |
Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet |
title_sort |
paleofluvial mega-canyon beneath the central greenland ice sheet |
publishDate |
2013 |
url |
https://hdl.handle.net/1983/8a76012f-bb4e-45b5-b524-7aa61e21e7ab https://research-information.bris.ac.uk/en/publications/8a76012f-bb4e-45b5-b524-7aa61e21e7ab https://doi.org/10.1126/science.1239794 http://www.sciencemag.org/content/341/6149/997 |
genre |
Antarc* Antarctica glacier Greenland Ice Sheet |
genre_facet |
Antarc* Antarctica glacier Greenland Ice Sheet |
op_source |
Bamber , J L , Siegert , M J , Griggs , J A , Marshall , S J & Spada , G 2013 , ' Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet ' , Science , vol. 341 , no. 6149 , pp. 997-999 . https://doi.org/10.1126/science.1239794 |
op_relation |
https://research-information.bris.ac.uk/en/publications/8a76012f-bb4e-45b5-b524-7aa61e21e7ab |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1126/science.1239794 |
container_title |
Science |
container_volume |
341 |
container_issue |
6149 |
container_start_page |
997 |
op_container_end_page |
999 |
_version_ |
1799470445830864896 |