Modelling the transition from grain-boundary sliding to power-law creep in dry snow densification
Modelling the transition from grain-boundary sliding to power-law creep in dry snow densification
复制标题
模拟干雪致密化过程中从晶界滑动到幂律蠕变的转变
DOI:
10.1017/jog.2021.95
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发表时间:
2021
影响因子:
3.4
通讯作者:
Morris E
中科院分区:
文献类型:
--
作者:
Morris E
This paper presents a physics-based macroscale model for the densification of dry snow which provides for a smooth transition between densification by grain-boundary sliding (stage 1) and densification by power-law creep (stage 2). The model uses established values of the stage 1 and 2 densification rates away from the transition zone and two transition parameters with a simple physical basis: the transition density and the half-width of the transition zone. It has been calibrated using density profiles from the SUMup database and physically based expressions for the transition parameters have been derived. The transition model produces better predictions of the depth of the nominal bubble close-off horizon than the Herron and Langway model, both in its classical form and in a recent version with re-optimised densification rates.
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影响因子:
5.3
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M. Hörhold;T. Laepple;J. Freitag;M. Bigler;H. Fischer;S. Kipfstuhl
通讯作者:
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DOI:
--
发表时间:
2009
期刊:
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DOI:
--
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2019
期刊:
影响因子:
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
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通讯作者:
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