Longevity of dams from landslides with sub-channel rupture surfaces, Peace River region, Canada
Abstract Background We examined seven landslide dams and their changes over time in the Peace River region of Canada. These landslides had subchannel rupture surfaces in glacial and glaciolacustrine sediments. We assessed the stability of the dams using 6 separate, morphometric-based stability indic...
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ftdoajarticles:oai:doaj.org/article:56d72f53c95646ffac0bec0d7c9f1aeb 2023-05-15T17:54:48+02:00 Longevity of dams from landslides with sub-channel rupture surfaces, Peace River region, Canada Brendan Miller Anja Dufresne Marten Geertsema Nigel Atkinson Heidi Evensen David Cruden 2018-01-01T00:00:00Z https://doi.org/10.1186/s40677-017-0090-0 https://doaj.org/article/56d72f53c95646ffac0bec0d7c9f1aeb EN eng SpringerOpen http://link.springer.com/article/10.1186/s40677-017-0090-0 https://doaj.org/toc/2197-8670 doi:10.1186/s40677-017-0090-0 2197-8670 https://doaj.org/article/56d72f53c95646ffac0bec0d7c9f1aeb Geoenvironmental Disasters, Vol 5, Iss 1, Pp 1-14 (2018) Landslide Dam Stability Peace River Quaternary Sediment Disasters and engineering TA495 Environmental sciences GE1-350 article 2018 ftdoajarticles https://doi.org/10.1186/s40677-017-0090-0 2022-12-31T10:51:08Z Abstract Background We examined seven landslide dams and their changes over time in the Peace River region of Canada. These landslides had subchannel rupture surfaces in glacial and glaciolacustrine sediments. We assessed the stability of the dams using 6 separate, morphometric-based stability indices (with a total of 10 stability thresholds). Results The landslides caused the streambeds to be elevated from 4 to 30 m forming the dams. The landslide lakes diminished in size over one to several years through stream incision into the dams and sediment infilling. The longest-lived dam persisted for up to 20 years. For two dams, incision into the dams lowered the lake levels by about half of the total depth, while the remainder of the water in the basins was displaced by sediment infilling. After the lakes drain, the sediment accumulations behind the dams can persist for decades. The stability analyses overpredicted unstable conditions which is inconsistent with the observed longterm persistence of the dams. Conclusions The landslide dams in our study were relatively stable. Their lakes persisted for up to 2 decades and diminished over time through a combination of slow incision and basin infilling. The stability indices we assessed overpredicted unstable conditions and thus would require modification for these particular types of dams in this regional setting. Article in Journal/Newspaper Peace River Directory of Open Access Journals: DOAJ Articles Canada Geoenvironmental Disasters 5 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Landslide Dam Stability Peace River Quaternary Sediment Disasters and engineering TA495 Environmental sciences GE1-350 |
spellingShingle |
Landslide Dam Stability Peace River Quaternary Sediment Disasters and engineering TA495 Environmental sciences GE1-350 Brendan Miller Anja Dufresne Marten Geertsema Nigel Atkinson Heidi Evensen David Cruden Longevity of dams from landslides with sub-channel rupture surfaces, Peace River region, Canada |
topic_facet |
Landslide Dam Stability Peace River Quaternary Sediment Disasters and engineering TA495 Environmental sciences GE1-350 |
description |
Abstract Background We examined seven landslide dams and their changes over time in the Peace River region of Canada. These landslides had subchannel rupture surfaces in glacial and glaciolacustrine sediments. We assessed the stability of the dams using 6 separate, morphometric-based stability indices (with a total of 10 stability thresholds). Results The landslides caused the streambeds to be elevated from 4 to 30 m forming the dams. The landslide lakes diminished in size over one to several years through stream incision into the dams and sediment infilling. The longest-lived dam persisted for up to 20 years. For two dams, incision into the dams lowered the lake levels by about half of the total depth, while the remainder of the water in the basins was displaced by sediment infilling. After the lakes drain, the sediment accumulations behind the dams can persist for decades. The stability analyses overpredicted unstable conditions which is inconsistent with the observed longterm persistence of the dams. Conclusions The landslide dams in our study were relatively stable. Their lakes persisted for up to 2 decades and diminished over time through a combination of slow incision and basin infilling. The stability indices we assessed overpredicted unstable conditions and thus would require modification for these particular types of dams in this regional setting. |
format |
Article in Journal/Newspaper |
author |
Brendan Miller Anja Dufresne Marten Geertsema Nigel Atkinson Heidi Evensen David Cruden |
author_facet |
Brendan Miller Anja Dufresne Marten Geertsema Nigel Atkinson Heidi Evensen David Cruden |
author_sort |
Brendan Miller |
title |
Longevity of dams from landslides with sub-channel rupture surfaces, Peace River region, Canada |
title_short |
Longevity of dams from landslides with sub-channel rupture surfaces, Peace River region, Canada |
title_full |
Longevity of dams from landslides with sub-channel rupture surfaces, Peace River region, Canada |
title_fullStr |
Longevity of dams from landslides with sub-channel rupture surfaces, Peace River region, Canada |
title_full_unstemmed |
Longevity of dams from landslides with sub-channel rupture surfaces, Peace River region, Canada |
title_sort |
longevity of dams from landslides with sub-channel rupture surfaces, peace river region, canada |
publisher |
SpringerOpen |
publishDate |
2018 |
url |
https://doi.org/10.1186/s40677-017-0090-0 https://doaj.org/article/56d72f53c95646ffac0bec0d7c9f1aeb |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Peace River |
genre_facet |
Peace River |
op_source |
Geoenvironmental Disasters, Vol 5, Iss 1, Pp 1-14 (2018) |
op_relation |
http://link.springer.com/article/10.1186/s40677-017-0090-0 https://doaj.org/toc/2197-8670 doi:10.1186/s40677-017-0090-0 2197-8670 https://doaj.org/article/56d72f53c95646ffac0bec0d7c9f1aeb |
op_doi |
https://doi.org/10.1186/s40677-017-0090-0 |
container_title |
Geoenvironmental Disasters |
container_volume |
5 |
container_issue |
1 |
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1766162644252753920 |