driven by topographic steering of ice
Fjords commonly punctuate continental edges formerly occupied by Quaternary ice sheets, reaching kilometre depths and extending many tens of kilometres inland1,2. These features must have been created by late Cenozoic ice sheets, because rivers cannot erode bedrock much below sea level. Ice sheets d...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.495.9099 2023-05-15T16:40:18+02:00 driven by topographic steering of ice Mark A. Kessler Robert S. Anderson Jason P. Briner The Pennsylvania State University CiteSeerX Archives 2008 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.495.9099 http://www.glyfac.buffalo.edu/Faculty/briner/buf/pubs/Kessler_et_al_2008.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.495.9099 http://www.glyfac.buffalo.edu/Faculty/briner/buf/pubs/Kessler_et_al_2008.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.glyfac.buffalo.edu/Faculty/briner/buf/pubs/Kessler_et_al_2008.pdf text 2008 ftciteseerx 2016-01-08T08:46:27Z Fjords commonly punctuate continental edges formerly occupied by Quaternary ice sheets, reaching kilometre depths and extending many tens of kilometres inland1,2. These features must have been created by late Cenozoic ice sheets, because rivers cannot erode bedrock much below sea level. Ice sheets drain primarily through fjords3,4; therefore, widespread fjord insertion may have altered ice-sheet size, shape and dynamics. Here, we use a two-dimensional ice-sheet model to simulate the incision of fjords through a coastal mountain range. We show that topographic steering of ice and erosion proportional to ice discharge are sufficient to form fjords. Within one million years, kilometre-deep fjords punched through the mountain range owing to a robust positive feedback initiated by ice being steered towards mountain passes. Enhanced erosion beneath thicker, faster ice deepens these passes, amplifying the Text Ice Sheet Unknown |
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Open Polar |
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ftciteseerx |
language |
English |
description |
Fjords commonly punctuate continental edges formerly occupied by Quaternary ice sheets, reaching kilometre depths and extending many tens of kilometres inland1,2. These features must have been created by late Cenozoic ice sheets, because rivers cannot erode bedrock much below sea level. Ice sheets drain primarily through fjords3,4; therefore, widespread fjord insertion may have altered ice-sheet size, shape and dynamics. Here, we use a two-dimensional ice-sheet model to simulate the incision of fjords through a coastal mountain range. We show that topographic steering of ice and erosion proportional to ice discharge are sufficient to form fjords. Within one million years, kilometre-deep fjords punched through the mountain range owing to a robust positive feedback initiated by ice being steered towards mountain passes. Enhanced erosion beneath thicker, faster ice deepens these passes, amplifying the |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Mark A. Kessler Robert S. Anderson Jason P. Briner |
spellingShingle |
Mark A. Kessler Robert S. Anderson Jason P. Briner driven by topographic steering of ice |
author_facet |
Mark A. Kessler Robert S. Anderson Jason P. Briner |
author_sort |
Mark A. Kessler |
title |
driven by topographic steering of ice |
title_short |
driven by topographic steering of ice |
title_full |
driven by topographic steering of ice |
title_fullStr |
driven by topographic steering of ice |
title_full_unstemmed |
driven by topographic steering of ice |
title_sort |
driven by topographic steering of ice |
publishDate |
2008 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.495.9099 http://www.glyfac.buffalo.edu/Faculty/briner/buf/pubs/Kessler_et_al_2008.pdf |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
http://www.glyfac.buffalo.edu/Faculty/briner/buf/pubs/Kessler_et_al_2008.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.495.9099 http://www.glyfac.buffalo.edu/Faculty/briner/buf/pubs/Kessler_et_al_2008.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766030693376196608 |