Correlation of acoustic emissions with patterns of movement in an extremely slow-moving landslide at Peace River, Alberta, Canada
The Peace River region, Alberta, Canada, has experienced extensive landslide activity since deglaciation. Shear zones within weak lacustrine silt and clay layers typically experience continuous creep, damaging highway and utilities infrastructure. However, occasionally, movement accelerates and pote...
Published in: | Canadian Geotechnical Journal |
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crcansciencepubl:10.1139/cgj-2016-0668 2024-09-15T18:29:11+00:00 Correlation of acoustic emissions with patterns of movement in an extremely slow-moving landslide at Peace River, Alberta, Canada Berg, Nancy Smith, Alister Russell, Shawn Dixon, Neil Proudfoot, Don Take, W. Andy 2018 http://dx.doi.org/10.1139/cgj-2016-0668 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cgj-2016-0668 http://www.nrcresearchpress.com/doi/pdf/10.1139/cgj-2016-0668 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Geotechnical Journal volume 55, issue 10, page 1475-1488 ISSN 0008-3674 1208-6010 journal-article 2018 crcansciencepubl https://doi.org/10.1139/cgj-2016-0668 2024-08-29T04:08:50Z The Peace River region, Alberta, Canada, has experienced extensive landslide activity since deglaciation. Shear zones within weak lacustrine silt and clay layers typically experience continuous creep, damaging highway and utilities infrastructure. However, occasionally, movement accelerates and potentially catastrophic failures occur. Conventional deformation monitoring approaches provide incremental measurements with low temporal resolution and do not necessarily allow rapid changes in stability to be detected and communicated sufficiently in advance to provide early warning. The study objectives were to (i) acquire a long-term dataset of continuous deformation measurements with high temporal resolution of a case study slope in Peace River, (ii) enhance understanding of a typical creeping Peace River slope’s behavior in response to climatic drivers, and (iii) investigate the potential of an acoustic emission (AE) monitoring system to provide early warning of accelerating deformation behavior. ShapeAccelArray (SAA) and AE instruments were installed, in addition to conventional inclinometers and piezometers. Measurements show that the landslide is “extremely slow”, moving on average 5 mm annually, and reveal seasonal activity with periods of acceleration and deceleration driven by pore-water pressures. Measured AE correlated strongly with the rate and magnitude of SAA-measured displacement, demonstrating the potential of the AE technique to warn of accelerating deformation behavior. Article in Journal/Newspaper Peace River Canadian Science Publishing Canadian Geotechnical Journal 55 10 1475 1488 |
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Canadian Science Publishing |
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description |
The Peace River region, Alberta, Canada, has experienced extensive landslide activity since deglaciation. Shear zones within weak lacustrine silt and clay layers typically experience continuous creep, damaging highway and utilities infrastructure. However, occasionally, movement accelerates and potentially catastrophic failures occur. Conventional deformation monitoring approaches provide incremental measurements with low temporal resolution and do not necessarily allow rapid changes in stability to be detected and communicated sufficiently in advance to provide early warning. The study objectives were to (i) acquire a long-term dataset of continuous deformation measurements with high temporal resolution of a case study slope in Peace River, (ii) enhance understanding of a typical creeping Peace River slope’s behavior in response to climatic drivers, and (iii) investigate the potential of an acoustic emission (AE) monitoring system to provide early warning of accelerating deformation behavior. ShapeAccelArray (SAA) and AE instruments were installed, in addition to conventional inclinometers and piezometers. Measurements show that the landslide is “extremely slow”, moving on average 5 mm annually, and reveal seasonal activity with periods of acceleration and deceleration driven by pore-water pressures. Measured AE correlated strongly with the rate and magnitude of SAA-measured displacement, demonstrating the potential of the AE technique to warn of accelerating deformation behavior. |
format |
Article in Journal/Newspaper |
author |
Berg, Nancy Smith, Alister Russell, Shawn Dixon, Neil Proudfoot, Don Take, W. Andy |
spellingShingle |
Berg, Nancy Smith, Alister Russell, Shawn Dixon, Neil Proudfoot, Don Take, W. Andy Correlation of acoustic emissions with patterns of movement in an extremely slow-moving landslide at Peace River, Alberta, Canada |
author_facet |
Berg, Nancy Smith, Alister Russell, Shawn Dixon, Neil Proudfoot, Don Take, W. Andy |
author_sort |
Berg, Nancy |
title |
Correlation of acoustic emissions with patterns of movement in an extremely slow-moving landslide at Peace River, Alberta, Canada |
title_short |
Correlation of acoustic emissions with patterns of movement in an extremely slow-moving landslide at Peace River, Alberta, Canada |
title_full |
Correlation of acoustic emissions with patterns of movement in an extremely slow-moving landslide at Peace River, Alberta, Canada |
title_fullStr |
Correlation of acoustic emissions with patterns of movement in an extremely slow-moving landslide at Peace River, Alberta, Canada |
title_full_unstemmed |
Correlation of acoustic emissions with patterns of movement in an extremely slow-moving landslide at Peace River, Alberta, Canada |
title_sort |
correlation of acoustic emissions with patterns of movement in an extremely slow-moving landslide at peace river, alberta, canada |
publisher |
Canadian Science Publishing |
publishDate |
2018 |
url |
http://dx.doi.org/10.1139/cgj-2016-0668 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cgj-2016-0668 http://www.nrcresearchpress.com/doi/pdf/10.1139/cgj-2016-0668 |
genre |
Peace River |
genre_facet |
Peace River |
op_source |
Canadian Geotechnical Journal volume 55, issue 10, page 1475-1488 ISSN 0008-3674 1208-6010 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cgj-2016-0668 |
container_title |
Canadian Geotechnical Journal |
container_volume |
55 |
container_issue |
10 |
container_start_page |
1475 |
op_container_end_page |
1488 |
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1810470586269302784 |