The Deformation of Subglacial Till: A Numerical Model
Prior work has shown that ice streams in West Antarctica are probably underlain by a layer of till 6 to 12 m thick. This till layer may be similiar to mobile drift found by Kamb (1979) on Blue Glacier in Washington State and by Boulton (1979) at Breidamerjokull in Iceland. This paper presents a prel...
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The Ohio State University
1986
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ftohiostateu:oai:kb.osu.edu:1811/77877 2023-05-15T13:49:09+02:00 The Deformation of Subglacial Till: A Numerical Model Mellors, Robert Whillans, I. M. (Ian M.) 1986-06 application/pdf http://hdl.handle.net/1811/77877 en_US eng The Ohio State University The Ohio State University. Department of Geology and Mineralogy Honors Theses; 1986 http://hdl.handle.net/1811/77877 Thesis 1986 ftohiostateu 2020-08-22T19:29:24Z Prior work has shown that ice streams in West Antarctica are probably underlain by a layer of till 6 to 12 m thick. This till layer may be similiar to mobile drift found by Kamb (1979) on Blue Glacier in Washington State and by Boulton (1979) at Breidamerjokull in Iceland. This paper presents a preliminary model for flow of this till layer. The till is assumed to be linearly viscous with a calculated viscosity of 3Xl0**8 Pa s. Flow is caused by shear stress from the ice above and by pressure differences. The thickness over time is tested by solving equations numerically using a time-centered finite-difference method. Results show that the till layer tends towards a constant thickness despite initial gradients in thickness. No embargo Thesis Antarc* Antarctica glacier Iceland West Antarctica Ohio State University (OSU): Knowledge Bank Blue Glacier ENVELOPE(164.167,164.167,-77.833,-77.833) West Antarctica |
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Open Polar |
collection |
Ohio State University (OSU): Knowledge Bank |
op_collection_id |
ftohiostateu |
language |
English |
description |
Prior work has shown that ice streams in West Antarctica are probably underlain by a layer of till 6 to 12 m thick. This till layer may be similiar to mobile drift found by Kamb (1979) on Blue Glacier in Washington State and by Boulton (1979) at Breidamerjokull in Iceland. This paper presents a preliminary model for flow of this till layer. The till is assumed to be linearly viscous with a calculated viscosity of 3Xl0**8 Pa s. Flow is caused by shear stress from the ice above and by pressure differences. The thickness over time is tested by solving equations numerically using a time-centered finite-difference method. Results show that the till layer tends towards a constant thickness despite initial gradients in thickness. No embargo |
author2 |
Whillans, I. M. (Ian M.) |
format |
Thesis |
author |
Mellors, Robert |
spellingShingle |
Mellors, Robert The Deformation of Subglacial Till: A Numerical Model |
author_facet |
Mellors, Robert |
author_sort |
Mellors, Robert |
title |
The Deformation of Subglacial Till: A Numerical Model |
title_short |
The Deformation of Subglacial Till: A Numerical Model |
title_full |
The Deformation of Subglacial Till: A Numerical Model |
title_fullStr |
The Deformation of Subglacial Till: A Numerical Model |
title_full_unstemmed |
The Deformation of Subglacial Till: A Numerical Model |
title_sort |
deformation of subglacial till: a numerical model |
publisher |
The Ohio State University |
publishDate |
1986 |
url |
http://hdl.handle.net/1811/77877 |
long_lat |
ENVELOPE(164.167,164.167,-77.833,-77.833) |
geographic |
Blue Glacier West Antarctica |
geographic_facet |
Blue Glacier West Antarctica |
genre |
Antarc* Antarctica glacier Iceland West Antarctica |
genre_facet |
Antarc* Antarctica glacier Iceland West Antarctica |
op_relation |
The Ohio State University. Department of Geology and Mineralogy Honors Theses; 1986 http://hdl.handle.net/1811/77877 |
_version_ |
1766250945768849408 |