Weak layer fracture: facets and depth hoar
Understanding failure initiation within weak snow layers is essential for modeling and predicting dry-snow slab avalanches. We therefore performed laboratory experiments with snow samples containing a weak layer consisting of either faceted crystals or depth hoar. During these experiments the sample...
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Copernicus Publications
2013
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Online Access: | https://doi.org/10.5194/tc-7-1447-2013 http://www.the-cryosphere.net/7/1447/2013/tc-7-1447-2013.pdf https://doaj.org/article/101f62604a6d4278b6ba756a8c24c2b6 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:101f62604a6d4278b6ba756a8c24c2b6 2023-05-15T18:32:21+02:00 Weak layer fracture: facets and depth hoar I. Reiweger J. Schweizer 2013-09-01 https://doi.org/10.5194/tc-7-1447-2013 http://www.the-cryosphere.net/7/1447/2013/tc-7-1447-2013.pdf https://doaj.org/article/101f62604a6d4278b6ba756a8c24c2b6 en eng Copernicus Publications doi:10.5194/tc-7-1447-2013 1994-0416 1994-0424 http://www.the-cryosphere.net/7/1447/2013/tc-7-1447-2013.pdf https://doaj.org/article/101f62604a6d4278b6ba756a8c24c2b6 undefined The Cryosphere, Vol 7, Iss 5, Pp 1447-1453 (2013) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2013 fttriple https://doi.org/10.5194/tc-7-1447-2013 2023-01-22T19:34:56Z Understanding failure initiation within weak snow layers is essential for modeling and predicting dry-snow slab avalanches. We therefore performed laboratory experiments with snow samples containing a weak layer consisting of either faceted crystals or depth hoar. During these experiments the samples were loaded with different loading rates and at various tilt angles until fracture. The strength of the samples decreased with increasing loading rate and increasing tilt angle. Additionally, we took pictures of the side of four samples with a high-speed video camera and calculated the displacement using a particle image velocimetry (PIV) algorithm. The fracture process within the weak layer could thus be observed in detail. Catastrophic failure started due to a shear fracture just above the interface between the depth hoar layer and the underlying crust. Article in Journal/Newspaper The Cryosphere Unknown The Cryosphere 7 5 1447 1453 |
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Open Polar |
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language |
English |
topic |
geo envir |
spellingShingle |
geo envir I. Reiweger J. Schweizer Weak layer fracture: facets and depth hoar |
topic_facet |
geo envir |
description |
Understanding failure initiation within weak snow layers is essential for modeling and predicting dry-snow slab avalanches. We therefore performed laboratory experiments with snow samples containing a weak layer consisting of either faceted crystals or depth hoar. During these experiments the samples were loaded with different loading rates and at various tilt angles until fracture. The strength of the samples decreased with increasing loading rate and increasing tilt angle. Additionally, we took pictures of the side of four samples with a high-speed video camera and calculated the displacement using a particle image velocimetry (PIV) algorithm. The fracture process within the weak layer could thus be observed in detail. Catastrophic failure started due to a shear fracture just above the interface between the depth hoar layer and the underlying crust. |
format |
Article in Journal/Newspaper |
author |
I. Reiweger J. Schweizer |
author_facet |
I. Reiweger J. Schweizer |
author_sort |
I. Reiweger |
title |
Weak layer fracture: facets and depth hoar |
title_short |
Weak layer fracture: facets and depth hoar |
title_full |
Weak layer fracture: facets and depth hoar |
title_fullStr |
Weak layer fracture: facets and depth hoar |
title_full_unstemmed |
Weak layer fracture: facets and depth hoar |
title_sort |
weak layer fracture: facets and depth hoar |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/tc-7-1447-2013 http://www.the-cryosphere.net/7/1447/2013/tc-7-1447-2013.pdf https://doaj.org/article/101f62604a6d4278b6ba756a8c24c2b6 |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 7, Iss 5, Pp 1447-1453 (2013) |
op_relation |
doi:10.5194/tc-7-1447-2013 1994-0416 1994-0424 http://www.the-cryosphere.net/7/1447/2013/tc-7-1447-2013.pdf https://doaj.org/article/101f62604a6d4278b6ba756a8c24c2b6 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-7-1447-2013 |
container_title |
The Cryosphere |
container_volume |
7 |
container_issue |
5 |
container_start_page |
1447 |
op_container_end_page |
1453 |
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1766216451800170496 |