Simulation Analysis of Glacial Surging in the Des Moines Ice Lobe
We analyze the Des Moines Ice Lobe of the Laurentide Ice Sheet (a main portion of the glacier that fl owed into the United States) using fi nite element simulations to explore plausible surging scenarios that can reduce ice motion time scales from thousands of years to a couple of decades. We chose...
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ftcedarvilleuniv:oai:digitalcommons.cedarville.edu:icc_proceedings-1404 2023-05-15T16:40:02+02:00 Simulation Analysis of Glacial Surging in the Des Moines Ice Lobe Sherburn, Jesse A. Horstemeyer, Mark F. Solanki, Kiran 2020-10-19T17:08:59Z application/pdf https://digitalcommons.cedarville.edu/icc_proceedings/vol6/iss1/24 https://digitalcommons.cedarville.edu/cgi/viewcontent.cgi?article=1404&context=icc_proceedings unknown DigitalCommons@Cedarville https://digitalcommons.cedarville.edu/icc_proceedings/vol6/iss1/24 https://digitalcommons.cedarville.edu/cgi/viewcontent.cgi?article=1404&context=icc_proceedings http://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND Proceedings of the International Conference on Creationism Glacier Surging Material modeling Internal state variable Des Moines Ice Lobe text 2020 ftcedarvilleuniv 2021-12-18T17:59:54Z We analyze the Des Moines Ice Lobe of the Laurentide Ice Sheet (a main portion of the glacier that fl owed into the United States) using fi nite element simulations to explore plausible surging scenarios that can reduce ice motion time scales from thousands of years to a couple of decades. We chose the Des Moines Ice Lobe of the Laurentide Ice Sheet, because of its relatively simple geometry. Previous studies considered idealized geometries of continental scale to investigate parameters related to the surging phenomena (cf., Horstemeyer & Gullett, 2003). These continental scale simulations of the Laurentide Ice Sheet provide boundary conditions for our local scale fi nite element simulations to allow us to examine effects of varying precipitation rates on the larger ice sheet. To further the work of Horstemeyer and Gullett, we performed three dimensional simulations, added a deformable basal till layer, and modifi ed the problem domain from a generic dome to a slab representing the front edge of the Des Moines Ice Lobe. These three dimensional simulation results illustrate clear surging lobing effects that have been observed in nature. Text Ice Sheet Cedarville University: DigitalCommons@Cedarville |
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Open Polar |
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Cedarville University: DigitalCommons@Cedarville |
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ftcedarvilleuniv |
language |
unknown |
topic |
Glacier Surging Material modeling Internal state variable Des Moines Ice Lobe |
spellingShingle |
Glacier Surging Material modeling Internal state variable Des Moines Ice Lobe Sherburn, Jesse A. Horstemeyer, Mark F. Solanki, Kiran Simulation Analysis of Glacial Surging in the Des Moines Ice Lobe |
topic_facet |
Glacier Surging Material modeling Internal state variable Des Moines Ice Lobe |
description |
We analyze the Des Moines Ice Lobe of the Laurentide Ice Sheet (a main portion of the glacier that fl owed into the United States) using fi nite element simulations to explore plausible surging scenarios that can reduce ice motion time scales from thousands of years to a couple of decades. We chose the Des Moines Ice Lobe of the Laurentide Ice Sheet, because of its relatively simple geometry. Previous studies considered idealized geometries of continental scale to investigate parameters related to the surging phenomena (cf., Horstemeyer & Gullett, 2003). These continental scale simulations of the Laurentide Ice Sheet provide boundary conditions for our local scale fi nite element simulations to allow us to examine effects of varying precipitation rates on the larger ice sheet. To further the work of Horstemeyer and Gullett, we performed three dimensional simulations, added a deformable basal till layer, and modifi ed the problem domain from a generic dome to a slab representing the front edge of the Des Moines Ice Lobe. These three dimensional simulation results illustrate clear surging lobing effects that have been observed in nature. |
format |
Text |
author |
Sherburn, Jesse A. Horstemeyer, Mark F. Solanki, Kiran |
author_facet |
Sherburn, Jesse A. Horstemeyer, Mark F. Solanki, Kiran |
author_sort |
Sherburn, Jesse A. |
title |
Simulation Analysis of Glacial Surging in the Des Moines Ice Lobe |
title_short |
Simulation Analysis of Glacial Surging in the Des Moines Ice Lobe |
title_full |
Simulation Analysis of Glacial Surging in the Des Moines Ice Lobe |
title_fullStr |
Simulation Analysis of Glacial Surging in the Des Moines Ice Lobe |
title_full_unstemmed |
Simulation Analysis of Glacial Surging in the Des Moines Ice Lobe |
title_sort |
simulation analysis of glacial surging in the des moines ice lobe |
publisher |
DigitalCommons@Cedarville |
publishDate |
2020 |
url |
https://digitalcommons.cedarville.edu/icc_proceedings/vol6/iss1/24 https://digitalcommons.cedarville.edu/cgi/viewcontent.cgi?article=1404&context=icc_proceedings |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Proceedings of the International Conference on Creationism |
op_relation |
https://digitalcommons.cedarville.edu/icc_proceedings/vol6/iss1/24 https://digitalcommons.cedarville.edu/cgi/viewcontent.cgi?article=1404&context=icc_proceedings |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766030396864069632 |