The importance of topographic gradients in alpine permafrost modeling
Highlights • A new numerical model for permafrost in alpine regions. • Importance of lateral fluxes in mountain permafrost modeling. • Influence of unsaturated conditions on freezing processes. • Development of mountain permafrost during warming scenario. Abstract Alpine permafrost environments are...
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Online Access: | https://oceanrep.geomar.de/id/eprint/57339/ https://doi.org/10.1016/j.advwatres.2022.104321 |
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ftoceanrep:oai:oceanrep.geomar.de:57339 2024-02-11T10:01:29+01:00 The importance of topographic gradients in alpine permafrost modeling Beddrich, Jonas Gupta, Shubhangi Wohlmuth, Barbara Chiogna, Gabriele 2022-12 https://oceanrep.geomar.de/id/eprint/57339/ https://doi.org/10.1016/j.advwatres.2022.104321 unknown Elsevier Beddrich, J., Gupta, S. , Wohlmuth, B. and Chiogna, G. (2022) The importance of topographic gradients in alpine permafrost modeling. Advances in Water Resources, 170 . Art.Nr. 104321. DOI 10.1016/j.advwatres.2022.104321 <https://doi.org/10.1016/j.advwatres.2022.104321>. doi:10.1016/j.advwatres.2022.104321 info:eu-repo/semantics/closedAccess Article PeerReviewed info:eu-repo/semantics/article 2022 ftoceanrep https://doi.org/10.1016/j.advwatres.2022.104321 2024-01-15T00:26:12Z Highlights • A new numerical model for permafrost in alpine regions. • Importance of lateral fluxes in mountain permafrost modeling. • Influence of unsaturated conditions on freezing processes. • Development of mountain permafrost during warming scenario. Abstract Alpine permafrost environments are highly vulnerable and sensitive to changes in regional and global climate trends. Thawing and degradation of permafrost has numerous adverse environmental, economic, and societal impacts. Mathematical modeling and numerical simulations provide powerful tools for predicting the degree of degradation and evolution of subsurface permafrost as a result of global warming. A particularly significant characteristic of alpine environments is the high variability in their surface geometry which drives large lateral thermal and fluid fluxes along topographic gradients. The combination of these topography-driven fluxes and unsaturated ground makes alpine systems markedly different from Arctic permafrost environments and general geotechnical ground freezing applications, and therefore, alpine permafrost demands its own specialized modeling approaches. In this work, we present a multi-physics permafrost model tailored to subsurface processes of alpine regions. In particular, we resolve the ice–water phase transitions, unsaturated conditions, and capillary actions, and account for the impact of the evolving pore space through freezing and thawing processes. Moreover, the approach is multi-dimensional, and therefore, inherently resolves the topography-driven horizontal fluxes. Through numerical case studies based on the elevation profiles of the Zugspitze (DE) and the Matterhorn (CH), we show the strong influence of lateral fluxes in 2D on active layer dynamics and the distribution of permafrost. Article in Journal/Newspaper Arctic Global warming Ice permafrost OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Matterhorn ENVELOPE(-20.900,-20.900,75.417,75.417) Advances in Water Resources 170 104321 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
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unknown |
description |
Highlights • A new numerical model for permafrost in alpine regions. • Importance of lateral fluxes in mountain permafrost modeling. • Influence of unsaturated conditions on freezing processes. • Development of mountain permafrost during warming scenario. Abstract Alpine permafrost environments are highly vulnerable and sensitive to changes in regional and global climate trends. Thawing and degradation of permafrost has numerous adverse environmental, economic, and societal impacts. Mathematical modeling and numerical simulations provide powerful tools for predicting the degree of degradation and evolution of subsurface permafrost as a result of global warming. A particularly significant characteristic of alpine environments is the high variability in their surface geometry which drives large lateral thermal and fluid fluxes along topographic gradients. The combination of these topography-driven fluxes and unsaturated ground makes alpine systems markedly different from Arctic permafrost environments and general geotechnical ground freezing applications, and therefore, alpine permafrost demands its own specialized modeling approaches. In this work, we present a multi-physics permafrost model tailored to subsurface processes of alpine regions. In particular, we resolve the ice–water phase transitions, unsaturated conditions, and capillary actions, and account for the impact of the evolving pore space through freezing and thawing processes. Moreover, the approach is multi-dimensional, and therefore, inherently resolves the topography-driven horizontal fluxes. Through numerical case studies based on the elevation profiles of the Zugspitze (DE) and the Matterhorn (CH), we show the strong influence of lateral fluxes in 2D on active layer dynamics and the distribution of permafrost. |
format |
Article in Journal/Newspaper |
author |
Beddrich, Jonas Gupta, Shubhangi Wohlmuth, Barbara Chiogna, Gabriele |
spellingShingle |
Beddrich, Jonas Gupta, Shubhangi Wohlmuth, Barbara Chiogna, Gabriele The importance of topographic gradients in alpine permafrost modeling |
author_facet |
Beddrich, Jonas Gupta, Shubhangi Wohlmuth, Barbara Chiogna, Gabriele |
author_sort |
Beddrich, Jonas |
title |
The importance of topographic gradients in alpine permafrost modeling |
title_short |
The importance of topographic gradients in alpine permafrost modeling |
title_full |
The importance of topographic gradients in alpine permafrost modeling |
title_fullStr |
The importance of topographic gradients in alpine permafrost modeling |
title_full_unstemmed |
The importance of topographic gradients in alpine permafrost modeling |
title_sort |
importance of topographic gradients in alpine permafrost modeling |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://oceanrep.geomar.de/id/eprint/57339/ https://doi.org/10.1016/j.advwatres.2022.104321 |
long_lat |
ENVELOPE(-20.900,-20.900,75.417,75.417) |
geographic |
Arctic Matterhorn |
geographic_facet |
Arctic Matterhorn |
genre |
Arctic Global warming Ice permafrost |
genre_facet |
Arctic Global warming Ice permafrost |
op_relation |
Beddrich, J., Gupta, S. , Wohlmuth, B. and Chiogna, G. (2022) The importance of topographic gradients in alpine permafrost modeling. Advances in Water Resources, 170 . Art.Nr. 104321. DOI 10.1016/j.advwatres.2022.104321 <https://doi.org/10.1016/j.advwatres.2022.104321>. doi:10.1016/j.advwatres.2022.104321 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.advwatres.2022.104321 |
container_title |
Advances in Water Resources |
container_volume |
170 |
container_start_page |
104321 |
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1790597282206318592 |