Quantifying exposure of linear infrastructures to earthquake-triggered transverse landslides in permafrost thawing slopes
Seismic shaking can cause slope instability in otherwise relatively stable permafrost terrains. In addition, rapid ice melting in low-permeability fine-grained soils can lead to excess pore-water pressure build-up and cause instability in slopes even at small angles. This study addresses the active-...
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crcansciencepubl:10.1139/cgj-2017-0076 2024-09-15T18:11:34+00:00 Quantifying exposure of linear infrastructures to earthquake-triggered transverse landslides in permafrost thawing slopes Dadfar, Behrang El Naggar, M. Hesham Nastev, Miroslav 2017 http://dx.doi.org/10.1139/cgj-2017-0076 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cgj-2017-0076 http://www.nrcresearchpress.com/doi/pdf/10.1139/cgj-2017-0076 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Geotechnical Journal volume 54, issue 7, page 1002-1012 ISSN 0008-3674 1208-6010 journal-article 2017 crcansciencepubl https://doi.org/10.1139/cgj-2017-0076 2024-08-01T04:10:03Z Seismic shaking can cause slope instability in otherwise relatively stable permafrost terrains. In addition, rapid ice melting in low-permeability fine-grained soils can lead to excess pore-water pressure build-up and cause instability in slopes even at small angles. This study addresses the active-layer detachment (ALD) slope instability hazard and develops a systematic risk assessment framework for existing and future linear infrastructures, such as energy pipelines, bridges, and roads traversing permafrost regions. Mild slopes, with average gradient of 7°, are considered in this study as the most representative of actual field conditions. The potential for earthquake-triggered ALD is analytically quantified. State-of-the-art ALD morphological statistics for northern Canada are combined with seismic slope stability analyses to determine (i) the probability of linear infrastructure exposure to permanent ground deformations (PGDs) caused by ALD and (ii) the extent of the potential PGD that the linear infrastructure may be subjected to. The Monte Carlo technique is applied to simulate and assess the sensitivity of the model to parameters such as earthquake magnitude and source-to-site distance. Findings from this study can be used to evaluate the vulnerability of linear infrastructures exposed to the ALD hazard. Article in Journal/Newspaper Ice permafrost Canadian Science Publishing Canadian Geotechnical Journal 54 7 1002 1012 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
Seismic shaking can cause slope instability in otherwise relatively stable permafrost terrains. In addition, rapid ice melting in low-permeability fine-grained soils can lead to excess pore-water pressure build-up and cause instability in slopes even at small angles. This study addresses the active-layer detachment (ALD) slope instability hazard and develops a systematic risk assessment framework for existing and future linear infrastructures, such as energy pipelines, bridges, and roads traversing permafrost regions. Mild slopes, with average gradient of 7°, are considered in this study as the most representative of actual field conditions. The potential for earthquake-triggered ALD is analytically quantified. State-of-the-art ALD morphological statistics for northern Canada are combined with seismic slope stability analyses to determine (i) the probability of linear infrastructure exposure to permanent ground deformations (PGDs) caused by ALD and (ii) the extent of the potential PGD that the linear infrastructure may be subjected to. The Monte Carlo technique is applied to simulate and assess the sensitivity of the model to parameters such as earthquake magnitude and source-to-site distance. Findings from this study can be used to evaluate the vulnerability of linear infrastructures exposed to the ALD hazard. |
format |
Article in Journal/Newspaper |
author |
Dadfar, Behrang El Naggar, M. Hesham Nastev, Miroslav |
spellingShingle |
Dadfar, Behrang El Naggar, M. Hesham Nastev, Miroslav Quantifying exposure of linear infrastructures to earthquake-triggered transverse landslides in permafrost thawing slopes |
author_facet |
Dadfar, Behrang El Naggar, M. Hesham Nastev, Miroslav |
author_sort |
Dadfar, Behrang |
title |
Quantifying exposure of linear infrastructures to earthquake-triggered transverse landslides in permafrost thawing slopes |
title_short |
Quantifying exposure of linear infrastructures to earthquake-triggered transverse landslides in permafrost thawing slopes |
title_full |
Quantifying exposure of linear infrastructures to earthquake-triggered transverse landslides in permafrost thawing slopes |
title_fullStr |
Quantifying exposure of linear infrastructures to earthquake-triggered transverse landslides in permafrost thawing slopes |
title_full_unstemmed |
Quantifying exposure of linear infrastructures to earthquake-triggered transverse landslides in permafrost thawing slopes |
title_sort |
quantifying exposure of linear infrastructures to earthquake-triggered transverse landslides in permafrost thawing slopes |
publisher |
Canadian Science Publishing |
publishDate |
2017 |
url |
http://dx.doi.org/10.1139/cgj-2017-0076 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cgj-2017-0076 http://www.nrcresearchpress.com/doi/pdf/10.1139/cgj-2017-0076 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Canadian Geotechnical Journal volume 54, issue 7, page 1002-1012 ISSN 0008-3674 1208-6010 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cgj-2017-0076 |
container_title |
Canadian Geotechnical Journal |
container_volume |
54 |
container_issue |
7 |
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1002 |
op_container_end_page |
1012 |
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1810449154473721856 |