Modelling the Transformation from Snow to Ice Based on the Underlying Sintering Process
Abstract In cold regions of the earth, like Antarctica, Greenland or mountains at high altitude, the annual amount of deposited snow exceeds the amount of snow melting. Snow, which is more than one year old, is called firn. Over time firn transforms into ice by a sintering process, mainly driven by...
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crwiley:10.1002/pamm.202000212 2024-09-15T17:46:54+00:00 Modelling the Transformation from Snow to Ice Based on the Underlying Sintering Process Schultz, Timm Müller, Ralf Gross, Dietmar Humbert, Angelika 2021 http://dx.doi.org/10.1002/pamm.202000212 https://onlinelibrary.wiley.com/doi/pdf/10.1002/pamm.202000212 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/pamm.202000212 en eng Wiley http://creativecommons.org/licenses/by/4.0/ PAMM volume 20, issue 1 ISSN 1617-7061 1617-7061 journal-article 2021 crwiley https://doi.org/10.1002/pamm.202000212 2024-07-09T04:12:50Z Abstract In cold regions of the earth, like Antarctica, Greenland or mountains at high altitude, the annual amount of deposited snow exceeds the amount of snow melting. Snow, which is more than one year old, is called firn. Over time firn transforms into ice by a sintering process, mainly driven by overburden pressure and temperature. This ultimately leads to the formation of glaciers and ice sheets. We simulate firn densification based on the processes of sintering. The constitutive law represents grain boundary sliding, dislocation creep and diffusion. These mechanisms sum up to the overall densification which leads to the transformation of snow to ice. The model aims at obtaining a physics driven simulation tool for firn densification which provides data for a wider range of areas. It will contribute to develop better models and better understanding of the cryosphere. Article in Journal/Newspaper Antarc* Antarctica Greenland Wiley Online Library PAMM 20 1 |
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Open Polar |
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Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract In cold regions of the earth, like Antarctica, Greenland or mountains at high altitude, the annual amount of deposited snow exceeds the amount of snow melting. Snow, which is more than one year old, is called firn. Over time firn transforms into ice by a sintering process, mainly driven by overburden pressure and temperature. This ultimately leads to the formation of glaciers and ice sheets. We simulate firn densification based on the processes of sintering. The constitutive law represents grain boundary sliding, dislocation creep and diffusion. These mechanisms sum up to the overall densification which leads to the transformation of snow to ice. The model aims at obtaining a physics driven simulation tool for firn densification which provides data for a wider range of areas. It will contribute to develop better models and better understanding of the cryosphere. |
format |
Article in Journal/Newspaper |
author |
Schultz, Timm Müller, Ralf Gross, Dietmar Humbert, Angelika |
spellingShingle |
Schultz, Timm Müller, Ralf Gross, Dietmar Humbert, Angelika Modelling the Transformation from Snow to Ice Based on the Underlying Sintering Process |
author_facet |
Schultz, Timm Müller, Ralf Gross, Dietmar Humbert, Angelika |
author_sort |
Schultz, Timm |
title |
Modelling the Transformation from Snow to Ice Based on the Underlying Sintering Process |
title_short |
Modelling the Transformation from Snow to Ice Based on the Underlying Sintering Process |
title_full |
Modelling the Transformation from Snow to Ice Based on the Underlying Sintering Process |
title_fullStr |
Modelling the Transformation from Snow to Ice Based on the Underlying Sintering Process |
title_full_unstemmed |
Modelling the Transformation from Snow to Ice Based on the Underlying Sintering Process |
title_sort |
modelling the transformation from snow to ice based on the underlying sintering process |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/pamm.202000212 https://onlinelibrary.wiley.com/doi/pdf/10.1002/pamm.202000212 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/pamm.202000212 |
genre |
Antarc* Antarctica Greenland |
genre_facet |
Antarc* Antarctica Greenland |
op_source |
PAMM volume 20, issue 1 ISSN 1617-7061 1617-7061 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/pamm.202000212 |
container_title |
PAMM |
container_volume |
20 |
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1 |
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1810495340705480704 |