Tomography-based monitoring of isothermal snow metamorphism under advective conditions
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 eff...
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/104361 2023-05-15T18:32:14+02:00 Tomography-based monitoring of isothermal snow metamorphism under advective conditions Ebner, Pirmin Schneebeli, Martin Steinfeld, Aldo 2015-07 application/application/pdf https://hdl.handle.net/20.500.11850/104361 https://doi.org/10.3929/ethz-b-000104361 en eng Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-9-1363-2015 info:eu-repo/semantics/altIdentifier/wos/000360661700003 http://hdl.handle.net/20.500.11850/104361 doi:10.3929/ethz-b-000104361 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported CC-BY The Cryosphere, 9 (4) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftethz https://doi.org/20.500.11850/104361 https://doi.org/10.3929/ethz-b-000104361 https://doi.org/10.5194/tc-9-1363-2015 2022-04-25T13:46:39Z 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. ISSN:1994-0416 ISSN:1994-0424 Article in Journal/Newspaper The Cryosphere ETH Zürich Research Collection |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
description |
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. ISSN:1994-0416 ISSN:1994-0424 |
format |
Article in Journal/Newspaper |
author |
Ebner, Pirmin Schneebeli, Martin Steinfeld, Aldo |
spellingShingle |
Ebner, Pirmin Schneebeli, Martin Steinfeld, Aldo Tomography-based monitoring of isothermal snow metamorphism under advective conditions |
author_facet |
Ebner, Pirmin Schneebeli, Martin Steinfeld, Aldo |
author_sort |
Ebner, Pirmin |
title |
Tomography-based monitoring of isothermal snow metamorphism under advective conditions |
title_short |
Tomography-based monitoring of isothermal snow metamorphism under advective conditions |
title_full |
Tomography-based monitoring of isothermal snow metamorphism under advective conditions |
title_fullStr |
Tomography-based monitoring of isothermal snow metamorphism under advective conditions |
title_full_unstemmed |
Tomography-based monitoring of isothermal snow metamorphism under advective conditions |
title_sort |
tomography-based monitoring of isothermal snow metamorphism under advective conditions |
publisher |
Copernicus |
publishDate |
2015 |
url |
https://hdl.handle.net/20.500.11850/104361 https://doi.org/10.3929/ethz-b-000104361 |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, 9 (4) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-9-1363-2015 info:eu-repo/semantics/altIdentifier/wos/000360661700003 http://hdl.handle.net/20.500.11850/104361 doi:10.3929/ethz-b-000104361 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/20.500.11850/104361 https://doi.org/10.3929/ethz-b-000104361 https://doi.org/10.5194/tc-9-1363-2015 |
_version_ |
1766216313088245760 |