Laboratory Study of Stick-Slip Behavior and Deformation Mechanics of Subglacial Till
Abstract: This award supports a project to conduct laboratory experiments and numerical modeling to determine the constitutive properties of subglacial till under dynamic stressing and to test the hypothesis that granular properties of till are sufficient, when coupled elastically to a large ice str...
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IEDA: US Antarctic Program Data Center
2009
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dataone:http://get.iedadata.org/metadata/iso/600054 2024-06-03T18:46:24+00:00 Laboratory Study of Stick-Slip Behavior and Deformation Mechanics of Subglacial Till Marone, Chris Anandakrishnan, Sridhar BEGINDATE: 2006-03-01T00:00:00Z ENDDATE: 2009-02-28T00:00:00Z 2009-01-01T00:00:00Z http://get.iedadata.org/metadata/iso/600054 unknown IEDA: US Antarctic Program Data Center glacial till lab experiment Antarctic Glaciology Physical Properties Antarctica Glaciers/Ice Sheet Marine Sediments Cryosphere Solid Earth US Antarctic Program Data Center (USAP-DC) Dataset 2009 dataone:urn:node:IEDA_USAP 2024-06-03T18:11:58Z Abstract: This award supports a project to conduct laboratory experiments and numerical modeling to determine the constitutive properties of subglacial till under dynamic stressing and to test the hypothesis that granular properties of till are sufficient, when coupled elastically to a large ice stream, to reproduce the field observations of triggered slip and subglacial seismicity. Testing will be carried out in a servo-controlled biaxial shear device under controlled temperature and stress conditions, which will allow both sliding and microstructural processes to be studied in detail. The main focus of the work will be on laboratory measurements. In addition, we will construct continuum models to evaluate whether our results can predict complex ice sheet motions and observed characteristics of subglacial seismicity. In terms of broader impacts, the proposed work will encourage interactions between the rock-mechanics and glaciology communities and will bring together members of different scientific backgrounds and vocabularies, but similar problems and data. The project will train undergraduate and graduate students at Penn State University and the scientists involved plan to give presentations to grade school classes, scout groups, and at community open houses. Results will be presented at professional meetings and will be published in a timely manner. The work will result in a better understanding of glacial motion and the physics of earthquake slip, which is essential for understanding ice sheet dynamics and earthquake hazard. Dataset Antarc* Antarctic Antarctica Ice Sheet IEDA: US Antarctic Program Data Center (via DataONE) Antarctic |
institution |
Open Polar |
collection |
IEDA: US Antarctic Program Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:IEDA_USAP |
language |
unknown |
topic |
glacial till lab experiment Antarctic Glaciology Physical Properties Antarctica Glaciers/Ice Sheet Marine Sediments Cryosphere Solid Earth US Antarctic Program Data Center (USAP-DC) |
spellingShingle |
glacial till lab experiment Antarctic Glaciology Physical Properties Antarctica Glaciers/Ice Sheet Marine Sediments Cryosphere Solid Earth US Antarctic Program Data Center (USAP-DC) Marone, Chris Anandakrishnan, Sridhar Laboratory Study of Stick-Slip Behavior and Deformation Mechanics of Subglacial Till |
topic_facet |
glacial till lab experiment Antarctic Glaciology Physical Properties Antarctica Glaciers/Ice Sheet Marine Sediments Cryosphere Solid Earth US Antarctic Program Data Center (USAP-DC) |
description |
Abstract: This award supports a project to conduct laboratory experiments and numerical modeling to determine the constitutive properties of subglacial till under dynamic stressing and to test the hypothesis that granular properties of till are sufficient, when coupled elastically to a large ice stream, to reproduce the field observations of triggered slip and subglacial seismicity. Testing will be carried out in a servo-controlled biaxial shear device under controlled temperature and stress conditions, which will allow both sliding and microstructural processes to be studied in detail. The main focus of the work will be on laboratory measurements. In addition, we will construct continuum models to evaluate whether our results can predict complex ice sheet motions and observed characteristics of subglacial seismicity. In terms of broader impacts, the proposed work will encourage interactions between the rock-mechanics and glaciology communities and will bring together members of different scientific backgrounds and vocabularies, but similar problems and data. The project will train undergraduate and graduate students at Penn State University and the scientists involved plan to give presentations to grade school classes, scout groups, and at community open houses. Results will be presented at professional meetings and will be published in a timely manner. The work will result in a better understanding of glacial motion and the physics of earthquake slip, which is essential for understanding ice sheet dynamics and earthquake hazard. |
format |
Dataset |
author |
Marone, Chris Anandakrishnan, Sridhar |
author_facet |
Marone, Chris Anandakrishnan, Sridhar |
author_sort |
Marone, Chris |
title |
Laboratory Study of Stick-Slip Behavior and Deformation Mechanics of Subglacial Till |
title_short |
Laboratory Study of Stick-Slip Behavior and Deformation Mechanics of Subglacial Till |
title_full |
Laboratory Study of Stick-Slip Behavior and Deformation Mechanics of Subglacial Till |
title_fullStr |
Laboratory Study of Stick-Slip Behavior and Deformation Mechanics of Subglacial Till |
title_full_unstemmed |
Laboratory Study of Stick-Slip Behavior and Deformation Mechanics of Subglacial Till |
title_sort |
laboratory study of stick-slip behavior and deformation mechanics of subglacial till |
publisher |
IEDA: US Antarctic Program Data Center |
publishDate |
2009 |
url |
http://get.iedadata.org/metadata/iso/600054 |
op_coverage |
BEGINDATE: 2006-03-01T00:00:00Z ENDDATE: 2009-02-28T00:00:00Z |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
_version_ |
1800872655618834432 |