Flow of anisotropic ice from the EPICA core: a new test apparatus
Our objective is to measure the mechanical properties of anisotropic ice of the EPICA ice core, from Dome Concordia, Antarctica, through the full depth of the borehole in deformation experiments under simulated ice-sheet conditions of temperature and pressure. We propose to undertake experiments on...
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2000
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ftucl:oai:eprints.ucl.ac.uk.OAI2:129164 2023-05-15T13:29:06+02:00 Flow of anisotropic ice from the EPICA core: a new test apparatus Sammonds, PR Boon, S Hughes, N Rist, MA Hutter, K 2000 http://discovery.ucl.ac.uk/129164/ unknown INT GLACIOLOGICAL SOC ANNALS OF GLACIOLOGY, VOL 30, 2000 , 30 1 - 7. (2000) POLYCRYSTALLINE ICE SHEETS DEFORMATION FAILURE STRESS CREEP Article 2000 ftucl 2016-01-15T03:09:28Z Our objective is to measure the mechanical properties of anisotropic ice of the EPICA ice core, from Dome Concordia, Antarctica, through the full depth of the borehole in deformation experiments under simulated ice-sheet conditions of temperature and pressure. We propose to undertake experiments on the EPICA core using both a conventional triaxial-test apparatus and a new, true, triaxial-test apparatus incorporating automated tomographic imaging of the ice-fabric evolution during deformation. We present the design of this new apparatus together with our testing methodology for EPICA ice. The new apparatus is capable of deforming an ice specimen, up to 200 mm x 100 mm x 40 mm, under servo-controlled biaxial loading with a superimposed confining pressure of 50 MPa and at temperatures down to -40 degreesC. Highly unusual problems arising from the true triaxial nature of the apparatus and tomographic imaging are discussed. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctica EPICA ice core Ice Sheet University College London: UCL Discovery |
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Open Polar |
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University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
unknown |
topic |
POLYCRYSTALLINE ICE SHEETS DEFORMATION FAILURE STRESS CREEP |
spellingShingle |
POLYCRYSTALLINE ICE SHEETS DEFORMATION FAILURE STRESS CREEP Sammonds, PR Boon, S Hughes, N Rist, MA Flow of anisotropic ice from the EPICA core: a new test apparatus |
topic_facet |
POLYCRYSTALLINE ICE SHEETS DEFORMATION FAILURE STRESS CREEP |
description |
Our objective is to measure the mechanical properties of anisotropic ice of the EPICA ice core, from Dome Concordia, Antarctica, through the full depth of the borehole in deformation experiments under simulated ice-sheet conditions of temperature and pressure. We propose to undertake experiments on the EPICA core using both a conventional triaxial-test apparatus and a new, true, triaxial-test apparatus incorporating automated tomographic imaging of the ice-fabric evolution during deformation. We present the design of this new apparatus together with our testing methodology for EPICA ice. The new apparatus is capable of deforming an ice specimen, up to 200 mm x 100 mm x 40 mm, under servo-controlled biaxial loading with a superimposed confining pressure of 50 MPa and at temperatures down to -40 degreesC. Highly unusual problems arising from the true triaxial nature of the apparatus and tomographic imaging are discussed. |
author2 |
Hutter, K |
format |
Article in Journal/Newspaper |
author |
Sammonds, PR Boon, S Hughes, N Rist, MA |
author_facet |
Sammonds, PR Boon, S Hughes, N Rist, MA |
author_sort |
Sammonds, PR |
title |
Flow of anisotropic ice from the EPICA core: a new test apparatus |
title_short |
Flow of anisotropic ice from the EPICA core: a new test apparatus |
title_full |
Flow of anisotropic ice from the EPICA core: a new test apparatus |
title_fullStr |
Flow of anisotropic ice from the EPICA core: a new test apparatus |
title_full_unstemmed |
Flow of anisotropic ice from the EPICA core: a new test apparatus |
title_sort |
flow of anisotropic ice from the epica core: a new test apparatus |
publisher |
INT GLACIOLOGICAL SOC |
publishDate |
2000 |
url |
http://discovery.ucl.ac.uk/129164/ |
genre |
Annals of Glaciology Antarc* Antarctica EPICA ice core Ice Sheet |
genre_facet |
Annals of Glaciology Antarc* Antarctica EPICA ice core Ice Sheet |
op_source |
ANNALS OF GLACIOLOGY, VOL 30, 2000 , 30 1 - 7. (2000) |
_version_ |
1765998501657837568 |