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dc.contributor.authorMcClung, David
dc.date.accessioned2023-10-25T17:49:27Z
dc.date.available2023-10-25T17:49:27Z
dc.date.issued1977
dc.identifier.issn0022-1430
dc.identifier.urihttps://hdl.handle.net/11250/3098799
dc.description.abstractMany slab avalanches can be attributed to shear failure in a weak, thin basal layer at the slab base. A reasonable starting point for evaluation of the conditions prior to fracture is, therefore, an investigation of shear failure in thin samples of snow. This paper gives the experimental procedure and data on measurements of shear stress versus displacement for thin samples of snow under plane strain and approximately simple shear conditions. The data are given under varying conditions of strain-rate, normal stress, density and snow type. The results show that the samples exhibited strain-softening provided they were sheared faster than they gained strength by settlement under the chosen conditions. If snow fails at the base of a slab in the way in which it fails in the laboratory, then a mechanism is provided whereby tensile stresses would be produced in the slab and whereby the corresponding maximum principal stresses would be rotated toward a direction parallel to the slope, thereby promoting avalanche release.en_US
dc.language.isoengen_US
dc.publisherCambridge University Pressen_US
dc.subjectAvalanche-RnDen_US
dc.subjectSnøskred-FoUen_US
dc.titleDirect Simple Shear Tests on Snow and their Relation to Slab Avalanche Formationen_US
dc.typeJournal articleen_US
dc.rights.holderInternational Glaciological Societyen_US
dc.source.pagenumber101-109en_US
dc.source.volume19en_US
dc.source.journalJournal of Glaciologyen_US
dc.source.issue81en_US
dc.identifier.doi10.3189/S0022143000215578


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