DOI: 10.5194/tc-9-1363-2015
Scopus记录号: 2-s2.0-84938527708
论文题名: Tomography-based monitoring of isothermal snow metamorphism under advective conditions
作者: Ebner P ; P ; , Schneebeli M ; , Steinfeld A
刊名: Cryosphere
ISSN: 19940416
出版年: 2015
卷: 9, 期: 4 起始页码: 1363
结束页码: 1371
语种: 英语
英文关键词: advection
; airflow
; geometry
; isotherm
; monitoring
; numerical model
; permeability
; snow cover
; snowpack
; three-dimensional modeling
; tomography
英文摘要: Time-lapse X-ray microtomography was used to investigate the structural dynamics of isothermal snow metamorphism exposed to an advective airflow. The effect of diffusion and advection across the snow pores on the snow microstructure were analysed in controlled laboratory experiments and possible effects on natural snowpacks discussed. The 3-D digital geometry obtained by tomographic scans was used in direct pore-level numerical simulations to determine the effective permeability. The results showed that isothermal advection with saturated air have no influence on the coarsening rate that is typical for isothermal snow metamorphism. Isothermal snow metamorphism is driven by sublimation deposition caused by the Kelvin effect and is the limiting factor independently of the transport regime in the pores. © Author(s) 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75275
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland; WSL Institute for Snow and Avalanche Research SLF, Davos-Dorf, Switzerland
Recommended Citation:
Ebner P,P,, Schneebeli M,et al. Tomography-based monitoring of isothermal snow metamorphism under advective conditions[J]. Cryosphere,2015-01-01,9(4)