Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques ...
Automated monitoring of freeze‐thaw cycles and fracture propagation in mountain rockwalls is needed to provide early warning about rockfall hazards. Conventional geoelectrical methods such as electrical resistivity tomography (ERT) are limited by large and variable ohmic contact resistances, requiri...
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ftdatacite:10.3929/ethz-b-000124934 2024-04-28T08:35:58+00:00 Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques ... Murton, Julian B. Kuras, Oliver Krautblatter, Michael Cane, Tim Tschofen, Dominique Uhlemann, Sebastian Schober, Sandra Watson, Phil 2016 application/pdf https://dx.doi.org/10.3929/ethz-b-000124934 http://hdl.handle.net/20.500.11850/124934 en eng ETH Zurich info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 article-journal Text ScholarlyArticle Journal Article 2016 ftdatacite https://doi.org/10.3929/ethz-b-000124934 2024-04-02T12:34:54Z Automated monitoring of freeze‐thaw cycles and fracture propagation in mountain rockwalls is needed to provide early warning about rockfall hazards. Conventional geoelectrical methods such as electrical resistivity tomography (ERT) are limited by large and variable ohmic contact resistances, requiring galvanic coupling with metal electrodes inserted into holes drilled into rock, and which can be loosened by rock weathering. We report a novel experimental methodology that combined capacitive resistivity imaging (CRI), ERT, and microseismic event recording to monitor freeze‐thaw of six blocks of hard and soft limestones under conditions simulating an active layer above permafrost and seasonally frozen rock in a nonpermafrost environment. Our results demonstrate that the CRI method is highly sensitive to freeze‐thaw processes; it yields property information equivalent to that obtained with conventional ERT and offers a viable route for nongalvanic long‐term geoelectrical monitoring, extending the benefits of ... : Journal of Geophysical Research: Earth Surface, 121 (12) ... Article in Journal/Newspaper permafrost DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
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language |
English |
description |
Automated monitoring of freeze‐thaw cycles and fracture propagation in mountain rockwalls is needed to provide early warning about rockfall hazards. Conventional geoelectrical methods such as electrical resistivity tomography (ERT) are limited by large and variable ohmic contact resistances, requiring galvanic coupling with metal electrodes inserted into holes drilled into rock, and which can be loosened by rock weathering. We report a novel experimental methodology that combined capacitive resistivity imaging (CRI), ERT, and microseismic event recording to monitor freeze‐thaw of six blocks of hard and soft limestones under conditions simulating an active layer above permafrost and seasonally frozen rock in a nonpermafrost environment. Our results demonstrate that the CRI method is highly sensitive to freeze‐thaw processes; it yields property information equivalent to that obtained with conventional ERT and offers a viable route for nongalvanic long‐term geoelectrical monitoring, extending the benefits of ... : Journal of Geophysical Research: Earth Surface, 121 (12) ... |
format |
Article in Journal/Newspaper |
author |
Murton, Julian B. Kuras, Oliver Krautblatter, Michael Cane, Tim Tschofen, Dominique Uhlemann, Sebastian Schober, Sandra Watson, Phil |
spellingShingle |
Murton, Julian B. Kuras, Oliver Krautblatter, Michael Cane, Tim Tschofen, Dominique Uhlemann, Sebastian Schober, Sandra Watson, Phil Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques ... |
author_facet |
Murton, Julian B. Kuras, Oliver Krautblatter, Michael Cane, Tim Tschofen, Dominique Uhlemann, Sebastian Schober, Sandra Watson, Phil |
author_sort |
Murton, Julian B. |
title |
Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques ... |
title_short |
Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques ... |
title_full |
Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques ... |
title_fullStr |
Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques ... |
title_full_unstemmed |
Monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques ... |
title_sort |
monitoring rock freezing and thawing by novel geoelectrical and acoustic techniques ... |
publisher |
ETH Zurich |
publishDate |
2016 |
url |
https://dx.doi.org/10.3929/ethz-b-000124934 http://hdl.handle.net/20.500.11850/124934 |
genre |
permafrost |
genre_facet |
permafrost |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.3929/ethz-b-000124934 |
_version_ |
1797567899220574208 |