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...
Published in: | The Cryosphere |
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Copernicus Publications
2013
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00021740 2023-05-15T18:32:33+02:00 Weak layer fracture: facets and depth hoar Reiweger, I. Schweizer, J. 2013-09 electronic https://doi.org/10.5194/tc-7-1447-2013 https://noa.gwlb.de/receive/cop_mods_00021740 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00021695/tc-7-1447-2013.pdf https://tc.copernicus.org/articles/7/1447/2013/tc-7-1447-2013.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-7-1447-2013 https://noa.gwlb.de/receive/cop_mods_00021740 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00021695/tc-7-1447-2013.pdf https://tc.copernicus.org/articles/7/1447/2013/tc-7-1447-2013.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2013 ftnonlinearchiv https://doi.org/10.5194/tc-7-1447-2013 2022-02-08T22:51:30Z 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 Niedersächsisches Online-Archiv NOA The Cryosphere 7 5 1447 1453 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Reiweger, I. Schweizer, J. Weak layer fracture: facets and depth hoar |
topic_facet |
article Verlagsveröffentlichung |
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 |
Reiweger, I. Schweizer, J. |
author_facet |
Reiweger, I. Schweizer, J. |
author_sort |
Reiweger, I. |
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 https://noa.gwlb.de/receive/cop_mods_00021740 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00021695/tc-7-1447-2013.pdf https://tc.copernicus.org/articles/7/1447/2013/tc-7-1447-2013.pdf |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-7-1447-2013 https://noa.gwlb.de/receive/cop_mods_00021740 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00021695/tc-7-1447-2013.pdf https://tc.copernicus.org/articles/7/1447/2013/tc-7-1447-2013.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
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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1766216699026079744 |