Environmental controls of frost cracking revealed through in situ acoustic emission measurements in steep bedrock
Frost cracking, the breakdown of rock by freezing, is one of the most important mechanical weathering processes acting on Earth's surface. Insights on the mechanisms driving frost cracking stem mainly from laboratory and theoretical studies. Transferring insights from such studies to natural co...
Published in: | Geophysical Research Letters |
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Online Access: | https://ir.library.carleton.ca/pub/19179 https://doi.org/10.1002/grl.50384 |
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ftcarletonunivir:oai:carleton.ca:19179 2023-05-15T17:57:41+02:00 Environmental controls of frost cracking revealed through in situ acoustic emission measurements in steep bedrock Girard, L. (Lucas) Gruber, S. (Stephan) Weber, S. (Samuel) Beutel, J. (Jan) 2013-05-16 application/pdf https://ir.library.carleton.ca/pub/19179 https://doi.org/10.1002/grl.50384 en eng https://ir.library.carleton.ca/pub/19179 doi:10.1002/grl.50384 info:eu-repo/semantics/openAccess Geophysical Research Letters vol. 40 no. 9, pp. 1748-1753 acoustic emission permafrost rock mechanics weathering info:eu-repo/semantics/article 2013 ftcarletonunivir https://doi.org/10.1002/grl.50384 2022-02-06T21:52:01Z Frost cracking, the breakdown of rock by freezing, is one of the most important mechanical weathering processes acting on Earth's surface. Insights on the mechanisms driving frost cracking stem mainly from laboratory and theoretical studies. Transferring insights from such studies to natural conditions, involving jointed bedrock and heterogeneous thermal and hydrological properties, is a major challenge. We address this problem with simultaneous in situ measurements of acoustic emissions, used as proxy of rock damage, and rock temperature/moisture content. The 1 year data set acquired in an Alpine rock wall shows that (1) liquid water content has an important impact on freezing-induced rock damage, (2) sustained freezing can yield much stronger damage than repeated freeze-thaw cycling, and (3) that frost cracking occurs over the full range of temperatures measured ex Article in Journal/Newspaper permafrost Carleton University's Institutional Repository Geophysical Research Letters 40 9 1748 1753 |
institution |
Open Polar |
collection |
Carleton University's Institutional Repository |
op_collection_id |
ftcarletonunivir |
language |
English |
topic |
acoustic emission permafrost rock mechanics weathering |
spellingShingle |
acoustic emission permafrost rock mechanics weathering Girard, L. (Lucas) Gruber, S. (Stephan) Weber, S. (Samuel) Beutel, J. (Jan) Environmental controls of frost cracking revealed through in situ acoustic emission measurements in steep bedrock |
topic_facet |
acoustic emission permafrost rock mechanics weathering |
description |
Frost cracking, the breakdown of rock by freezing, is one of the most important mechanical weathering processes acting on Earth's surface. Insights on the mechanisms driving frost cracking stem mainly from laboratory and theoretical studies. Transferring insights from such studies to natural conditions, involving jointed bedrock and heterogeneous thermal and hydrological properties, is a major challenge. We address this problem with simultaneous in situ measurements of acoustic emissions, used as proxy of rock damage, and rock temperature/moisture content. The 1 year data set acquired in an Alpine rock wall shows that (1) liquid water content has an important impact on freezing-induced rock damage, (2) sustained freezing can yield much stronger damage than repeated freeze-thaw cycling, and (3) that frost cracking occurs over the full range of temperatures measured ex |
format |
Article in Journal/Newspaper |
author |
Girard, L. (Lucas) Gruber, S. (Stephan) Weber, S. (Samuel) Beutel, J. (Jan) |
author_facet |
Girard, L. (Lucas) Gruber, S. (Stephan) Weber, S. (Samuel) Beutel, J. (Jan) |
author_sort |
Girard, L. (Lucas) |
title |
Environmental controls of frost cracking revealed through in situ acoustic emission measurements in steep bedrock |
title_short |
Environmental controls of frost cracking revealed through in situ acoustic emission measurements in steep bedrock |
title_full |
Environmental controls of frost cracking revealed through in situ acoustic emission measurements in steep bedrock |
title_fullStr |
Environmental controls of frost cracking revealed through in situ acoustic emission measurements in steep bedrock |
title_full_unstemmed |
Environmental controls of frost cracking revealed through in situ acoustic emission measurements in steep bedrock |
title_sort |
environmental controls of frost cracking revealed through in situ acoustic emission measurements in steep bedrock |
publishDate |
2013 |
url |
https://ir.library.carleton.ca/pub/19179 https://doi.org/10.1002/grl.50384 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Geophysical Research Letters vol. 40 no. 9, pp. 1748-1753 |
op_relation |
https://ir.library.carleton.ca/pub/19179 doi:10.1002/grl.50384 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/grl.50384 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
9 |
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1748 |
op_container_end_page |
1753 |
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1766166167785832448 |