| DOI: | 10.1002/2014GL062780
|
| 论文题名: | A new mixed-mode failure criterion for weak snowpack layers |
| 作者: | Reiweger I.; Gaume J.; Schweizer J.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8915
|
| EISSN: | 1944-8646
|
| 出版年: | 2015
|
| 卷: | 42, 期:5 | | 起始页码: | 1427
|
| 结束页码: | 1432
|
| 语种: | 英语
|
| 英文关键词: | avalanche
; failure
; failure criterion
; Mohr-Coulomb-Cap
; snow
; weak layer
|
| Scopus关键词: | Avalanches (snowslides)
; Computer system recovery
; Failure (mechanical)
; Compressive failure
; Failure criteria
; Hazard Assessment
; Loading experiment
; Mixed mode failure
; Mohr Coulomb model
; Mohr-Coulomb
; Weak layer
; Snow
; avalanche
; Coulomb criterion
; failure analysis
; hazard assessment
; Mohr theory
; snowpack
|
| 英文摘要: | The failure of a weak snow layer is the first in a series of processes involved in dry-snow slab avalanche release. The nature of the initial failure within the weak layer is not yet fully understood but widely debated. The knowledge of the failure criterion is essential for developing avalanche release models and hence for avalanche hazard assessment. Yet different release models assume contradictory criteria as input parameters. We analyzed loading experiments on snow failure performed in a cold laboratory with samples containing a persistent weak snow layer of either faceted crystal, depth hoar, or buried surface hoar. The failure behavior of these layers can be described well with a modified Mohr-Coulomb model accounting for the possible compressive failure of snow. We consequently propose a new mixed-mode shear-compression failure criterion that can be used in avalanche release models. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925865967&doi=10.1002%2f2014GL062780&partnerID=40&md5=32aa33c6e94f01691badd8d3668fd740
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8531
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland
|
| Recommended Citation: | |
Reiweger I.,Gaume J.,Schweizer J.. A new mixed-mode failure criterion for weak snowpack layers[J]. Geophysical Research Letters,2015-01-01,42(5).
|
|
|