Ambient seismic vibrations in steep bedrock permafrost used to infer variations of ice-fill in fractures
The behavior of ice in frozen rock masses is an important control on rock slope stability but the knowledge of the formation, extent and evolution of ice-filled fractures in steep bedrock permafrost is limited. Therefore, this study aims at characterizing the site specific ambient seismic vibration...
Published in: | Earth and Planetary Science Letters |
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ftcarletonunivir:oai:carleton.ca:20770 2023-05-15T16:36:48+02:00 Ambient seismic vibrations in steep bedrock permafrost used to infer variations of ice-fill in fractures Weber, S. (S.) Fäh, D. (D.) Beutel, J. (J.) Faillettaz, J. (J.) Gruber, S. (Stephan) Vieli, A. (A.) 2018-11-01 https://ir.library.carleton.ca/pub/20770 https://doi.org/10.1016/j.epsl.2018.08.042 en eng https://ir.library.carleton.ca/pub/20770 doi:10.1016/j.epsl.2018.08.042 Earth and Planetary Science Letters vol. 501, pp. 119-127 ambient seismic vibration bedrock permafrost fracture displacement info:eu-repo/semantics/article 2018 ftcarletonunivir https://doi.org/10.1016/j.epsl.2018.08.042 2022-02-06T21:51:48Z The behavior of ice in frozen rock masses is an important control on rock slope stability but the knowledge of the formation, extent and evolution of ice-filled fractures in steep bedrock permafrost is limited. Therefore, this study aims at characterizing the site specific ambient seismic vibration recorded at the Matterhorn Hörnligrat fieldsite over the course of more than three years. The observed normal mode resonance frequencies vary seasonally with four distinct phases: persistent decrease during summer (phase I), rapid increase during freezing (phase II), trough-shaped pattern in winter (phase III) and a sharp peak with a rapid decay during the melting/thawing season (phase IV). The relation between resonance frequency and rock temperature exhibits an annually repeated pattern with hysteretic behavior. The link between resonance frequency, fracture width and rock temperature indicates that irreversible fracture d Article in Journal/Newspaper Ice permafrost Carleton University's Institutional Repository Sharp Peak ENVELOPE(-37.900,-37.900,-54.050,-54.050) Earth and Planetary Science Letters 501 119 127 |
institution |
Open Polar |
collection |
Carleton University's Institutional Repository |
op_collection_id |
ftcarletonunivir |
language |
English |
topic |
ambient seismic vibration bedrock permafrost fracture displacement |
spellingShingle |
ambient seismic vibration bedrock permafrost fracture displacement Weber, S. (S.) Fäh, D. (D.) Beutel, J. (J.) Faillettaz, J. (J.) Gruber, S. (Stephan) Vieli, A. (A.) Ambient seismic vibrations in steep bedrock permafrost used to infer variations of ice-fill in fractures |
topic_facet |
ambient seismic vibration bedrock permafrost fracture displacement |
description |
The behavior of ice in frozen rock masses is an important control on rock slope stability but the knowledge of the formation, extent and evolution of ice-filled fractures in steep bedrock permafrost is limited. Therefore, this study aims at characterizing the site specific ambient seismic vibration recorded at the Matterhorn Hörnligrat fieldsite over the course of more than three years. The observed normal mode resonance frequencies vary seasonally with four distinct phases: persistent decrease during summer (phase I), rapid increase during freezing (phase II), trough-shaped pattern in winter (phase III) and a sharp peak with a rapid decay during the melting/thawing season (phase IV). The relation between resonance frequency and rock temperature exhibits an annually repeated pattern with hysteretic behavior. The link between resonance frequency, fracture width and rock temperature indicates that irreversible fracture d |
format |
Article in Journal/Newspaper |
author |
Weber, S. (S.) Fäh, D. (D.) Beutel, J. (J.) Faillettaz, J. (J.) Gruber, S. (Stephan) Vieli, A. (A.) |
author_facet |
Weber, S. (S.) Fäh, D. (D.) Beutel, J. (J.) Faillettaz, J. (J.) Gruber, S. (Stephan) Vieli, A. (A.) |
author_sort |
Weber, S. (S.) |
title |
Ambient seismic vibrations in steep bedrock permafrost used to infer variations of ice-fill in fractures |
title_short |
Ambient seismic vibrations in steep bedrock permafrost used to infer variations of ice-fill in fractures |
title_full |
Ambient seismic vibrations in steep bedrock permafrost used to infer variations of ice-fill in fractures |
title_fullStr |
Ambient seismic vibrations in steep bedrock permafrost used to infer variations of ice-fill in fractures |
title_full_unstemmed |
Ambient seismic vibrations in steep bedrock permafrost used to infer variations of ice-fill in fractures |
title_sort |
ambient seismic vibrations in steep bedrock permafrost used to infer variations of ice-fill in fractures |
publishDate |
2018 |
url |
https://ir.library.carleton.ca/pub/20770 https://doi.org/10.1016/j.epsl.2018.08.042 |
long_lat |
ENVELOPE(-37.900,-37.900,-54.050,-54.050) |
geographic |
Sharp Peak |
geographic_facet |
Sharp Peak |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Earth and Planetary Science Letters vol. 501, pp. 119-127 |
op_relation |
https://ir.library.carleton.ca/pub/20770 doi:10.1016/j.epsl.2018.08.042 |
op_doi |
https://doi.org/10.1016/j.epsl.2018.08.042 |
container_title |
Earth and Planetary Science Letters |
container_volume |
501 |
container_start_page |
119 |
op_container_end_page |
127 |
_version_ |
1766027127379984384 |