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DOI | 10.1029/2021GL092514 |
Single‐Crystal Elasticity of High‐Pressure Ice up to 98 GPa by Brillouin Scattering | |
Weigang Shi; Ningyu Sun; Xinyang Li; Zhu Mao; Jin Liu; Vitali B. Prakapenka | |
2021-04-06 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Knowledge of the elasticity of high‐pressure ice is key to constructing the internal structure of various planetary bodies. Here, we present direct experimental constraints on the single‐crystal elasticity of ice with 0.5 mol/L (0.9 mol.%) NaCl up to 98 GPa at 300 K. The change from ice‐VII to the dynamically disordered ice‐VII is characterized by an obvious softening of the longitudinal and bulk moduli between 42.4 and 46 GPa. Further transition to ice X at ∼64 GPa results in an apparent change in the pressure dependence for the elasticity. Using the obtained elasticity, our modelling reveals that the boundary between the ice‐VII layer and the silicate mantle or core in moderate‐size icy planetary bodies would be associated with a sudden velocity jump. In large planetary bodies, the change from ice X to the silicate layer will be characterized by an abrupt reduction in velocity. |
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/322067 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Weigang Shi,Ningyu Sun,Xinyang Li,等. Single‐Crystal Elasticity of High‐Pressure Ice up to 98 GPa by Brillouin Scattering[J]. Geophysical Research Letters,2021. |
APA | Weigang Shi,Ningyu Sun,Xinyang Li,Zhu Mao,Jin Liu,&Vitali B. Prakapenka.(2021).Single‐Crystal Elasticity of High‐Pressure Ice up to 98 GPa by Brillouin Scattering.Geophysical Research Letters. |
MLA | Weigang Shi,et al."Single‐Crystal Elasticity of High‐Pressure Ice up to 98 GPa by Brillouin Scattering".Geophysical Research Letters (2021). |
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