A time-dependent ice sheet model - Preliminary results
A numerical model of ice sheet flow is developed, and preliminary results are described. This model includes vertical resolution of temperature, stress, and strain rate which represents a considerable improvement over previous vertically averaged ice sheet models. The model follows the flow of ice a...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19830033287 2023-05-15T16:39:37+02:00 A time-dependent ice sheet model - Preliminary results Bindschadler, R. A. Gore, R. Unclassified, Unlimited, Publicly available Nov 20, 1982 http://ntrs.nasa.gov/search.jsp?R=19830033287 unknown http://ntrs.nasa.gov/search.jsp?R=19830033287 Accession ID: 83A14505 Copyright Other Sources 46 Journal of Geophysical Research; 87; Nov. 20 1982 ftnasantrs 2012-02-15T15:24:27Z A numerical model of ice sheet flow is developed, and preliminary results are described. This model includes vertical resolution of temperature, stress, and strain rate which represents a considerable improvement over previous vertically averaged ice sheet models. The model follows the flow of ice along a flow line within an ice sheet drainage basin. Longitudinal stresses and basal sliding are included. Basal sliding is dependent on the base shear stress and a specified distribution of basal water pressure. The numerical methods used to solve the coupled set of stress and velocity equations for the static and time-evolutionary cases are discussed. A steady state profile simulating an ice stream is calculated for a particular set of input parameters, and changes in the profile are examined for different choices of parameters. Preliminary studies of response behavior are completed using a simplified ice sheet geometry with a fixed terminus or grounding line. The results of these studies illustrate ice sheet thinning in response to a lowered sea level or to a reduction in the extent of ice rises (or pinning points) within ice shelves. Other/Unknown Material Ice Sheet Ice Shelves NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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unknown |
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46 |
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46 Bindschadler, R. A. Gore, R. A time-dependent ice sheet model - Preliminary results |
topic_facet |
46 |
description |
A numerical model of ice sheet flow is developed, and preliminary results are described. This model includes vertical resolution of temperature, stress, and strain rate which represents a considerable improvement over previous vertically averaged ice sheet models. The model follows the flow of ice along a flow line within an ice sheet drainage basin. Longitudinal stresses and basal sliding are included. Basal sliding is dependent on the base shear stress and a specified distribution of basal water pressure. The numerical methods used to solve the coupled set of stress and velocity equations for the static and time-evolutionary cases are discussed. A steady state profile simulating an ice stream is calculated for a particular set of input parameters, and changes in the profile are examined for different choices of parameters. Preliminary studies of response behavior are completed using a simplified ice sheet geometry with a fixed terminus or grounding line. The results of these studies illustrate ice sheet thinning in response to a lowered sea level or to a reduction in the extent of ice rises (or pinning points) within ice shelves. |
format |
Other/Unknown Material |
author |
Bindschadler, R. A. Gore, R. |
author_facet |
Bindschadler, R. A. Gore, R. |
author_sort |
Bindschadler, R. A. |
title |
A time-dependent ice sheet model - Preliminary results |
title_short |
A time-dependent ice sheet model - Preliminary results |
title_full |
A time-dependent ice sheet model - Preliminary results |
title_fullStr |
A time-dependent ice sheet model - Preliminary results |
title_full_unstemmed |
A time-dependent ice sheet model - Preliminary results |
title_sort |
time-dependent ice sheet model - preliminary results |
publishDate |
1982 |
url |
http://ntrs.nasa.gov/search.jsp?R=19830033287 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Ice Sheet Ice Shelves |
genre_facet |
Ice Sheet Ice Shelves |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19830033287 Accession ID: 83A14505 |
op_rights |
Copyright |
_version_ |
1766029948207759360 |