Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL088964 |
Application of Constitutive Friction Laws to Glacier Seismicity | |
L. K. Zoet; M. J. Ikari; R. B. Alley; C. Marone; S. Anandakrishnan; B. M. Carpenter; M. M. Scuderi | |
2020-10-19 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | While analysis of glacial seismicity continues to be a widely‐used method for interpreting glacial processes, the underlying mechanics controlling glacial stick‐slip seismicity remain speculative. Here, we report on laboratory shear experiments of debris‐laden ice slid over a bedrock asperity under carefully controlled conditions. By modifying the elastic loading stiffness, we generated the first laboratory icequakes. Our work represents the first comprehensive lab observations of unstable ice‐slip events, and replicates several seismological field observations of glacier slip, such as slip velocity, stress drop, and the relationship between stress drop and recurrence interval. We also observe that stick‐slips initiate above a critical driving velocity, and that stress drop magnitude decreases with further increases in velocity, consistent with friction theory and rock‐on‐rock friction laboratory experiments. Our results demonstrate that glacier slip behavior can be accurately predicted by the constitutive rate‐and‐state friction laws that were developed for rock friction. |
领域 | 气候变化 |
URL | 查看原文 |
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/300192 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | L. K. Zoet,M. J. Ikari,R. B. Alley,et al. Application of Constitutive Friction Laws to Glacier Seismicity[J]. Geophysical Research Letters,2020. |
APA | L. K. Zoet.,M. J. Ikari.,R. B. Alley.,C. Marone.,S. Anandakrishnan.,...&M. M. Scuderi.(2020).Application of Constitutive Friction Laws to Glacier Seismicity.Geophysical Research Letters. |
MLA | L. K. Zoet,et al."Application of Constitutive Friction Laws to Glacier Seismicity".Geophysical Research Letters (2020). |
条目包含的文件 | 条目无相关文件。 |
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