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DOI | 10.1002/2017GL074063 |
Continuum cavity expansion and discrete micromechanical models for inferring macroscopic snow mechanical properties from cone penetration data | |
Ruiz, Siul1; Capelli, Achille1,2; van Herwijnen, Alec2; Schneebeli, Martin2; Or, Dani1 | |
2017-08-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:16 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland |
英文摘要 | Digital cone penetration measurements can be used to infer snow mechanical properties, for instance, to study snow avalanche formation. The standard interpretation of these measurements is based on statistically inferred micromechanical interactions between snow microstructural elements and a well-calibrated penetrating cone. We propose an alternative continuum model to derive the modulus of elasticity and yield strength of snow based on the widely used cavity expansion model in soils. We compare results from these approaches based on laboratory cone penetration measurements in snow samples of different densities and structural sizes. Results suggest that the micromechanical model underestimates the snow elastic modulus for dense samples by 2 orders of magnitude. By comparison with the cavity expansion-based model, some of the discrepancy is attributed to low sensitivity of the micromechanical model to the snow elastic modulus. Reasons and implications of this discrepancy are discussed, and possibilities to enhance both methodologies are proposed. |
英文关键词 | macroscopic mechanical properties yield stress elastic modulus snow penetration continuum cavity-expansion penetration model microstructural model penetration model |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410658800035 |
WOS关键词 | ROOT-GROWTH ; SOIL ; PENETROMETER ; RESISTANCE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26683 |
专题 | 气候变化 |
作者单位 | 1.ETH, Dept Environm Syst Sci, Zurich, Switzerland; 2.WSL Inst Snow & Avalanche Res SLF, Davos, Switzerland |
推荐引用方式 GB/T 7714 | Ruiz, Siul,Capelli, Achille,van Herwijnen, Alec,et al. Continuum cavity expansion and discrete micromechanical models for inferring macroscopic snow mechanical properties from cone penetration data[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(16). |
APA | Ruiz, Siul,Capelli, Achille,van Herwijnen, Alec,Schneebeli, Martin,&Or, Dani.(2017).Continuum cavity expansion and discrete micromechanical models for inferring macroscopic snow mechanical properties from cone penetration data.GEOPHYSICAL RESEARCH LETTERS,44(16). |
MLA | Ruiz, Siul,et al."Continuum cavity expansion and discrete micromechanical models for inferring macroscopic snow mechanical properties from cone penetration data".GEOPHYSICAL RESEARCH LETTERS 44.16(2017). |
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