Advective heat transport in frozen rock clefts: Conceptual model, laboratory experiments and numerical simulation
Advective heat transported by water percolating into discontinuities in frozen ground can rapidly increase temperatures at depth because it provides a thermal shortcut between the atmosphere and the subsurface. Here, we develop a conceptual model that incorporates the main heat-exchange processes in...
Published in: | Permafrost and Periglacial Processes |
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Language: | English |
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Online Access: | https://ir.library.carleton.ca/pub/19134 https://doi.org/10.1002/ppp.737 |
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ftcarletonunivir:oai:carleton.ca:19134 2023-05-15T16:37:16+02:00 Advective heat transport in frozen rock clefts: Conceptual model, laboratory experiments and numerical simulation Hasler, A. (Andreas) Gruber, S. (Stephan) Font, M. (Marianne) Dubois, A. (Anthony) 2011-10-01 https://ir.library.carleton.ca/pub/19134 https://doi.org/10.1002/ppp.737 en eng https://ir.library.carleton.ca/pub/19134 doi:10.1002/ppp.737 Permafrost and Periglacial Processes vol. 22 no. 4, pp. 378-389 Advective heat transport Bedrock Climate change Conductive heat transfer Laboratory experiment Numerical modelling Permafrost Rockfall info:eu-repo/semantics/article 2011 ftcarletonunivir https://doi.org/10.1002/ppp.737 2022-02-06T21:52:02Z Advective heat transported by water percolating into discontinuities in frozen ground can rapidly increase temperatures at depth because it provides a thermal shortcut between the atmosphere and the subsurface. Here, we develop a conceptual model that incorporates the main heat-exchange processes in a rock cleft. Laboratory experiments and numerical simulations based on the model indicate that latent heat release due to initial ice aggradation can rapidly warm cold bedrock and precondition it for later thermal erosion of cleft ice by advected sensible heat. The timing and duration of water percolation both affect the ice-level change if initial aggradation and subsequent erosion are of the same order of magnitude. The surplus advected heat is absorbed by cleft ice loss and runoff from the cleft so that this energy is not directly detectable in ground temperatur Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Carleton University's Institutional Repository Permafrost and Periglacial Processes 22 4 378 389 |
institution |
Open Polar |
collection |
Carleton University's Institutional Repository |
op_collection_id |
ftcarletonunivir |
language |
English |
topic |
Advective heat transport Bedrock Climate change Conductive heat transfer Laboratory experiment Numerical modelling Permafrost Rockfall |
spellingShingle |
Advective heat transport Bedrock Climate change Conductive heat transfer Laboratory experiment Numerical modelling Permafrost Rockfall Hasler, A. (Andreas) Gruber, S. (Stephan) Font, M. (Marianne) Dubois, A. (Anthony) Advective heat transport in frozen rock clefts: Conceptual model, laboratory experiments and numerical simulation |
topic_facet |
Advective heat transport Bedrock Climate change Conductive heat transfer Laboratory experiment Numerical modelling Permafrost Rockfall |
description |
Advective heat transported by water percolating into discontinuities in frozen ground can rapidly increase temperatures at depth because it provides a thermal shortcut between the atmosphere and the subsurface. Here, we develop a conceptual model that incorporates the main heat-exchange processes in a rock cleft. Laboratory experiments and numerical simulations based on the model indicate that latent heat release due to initial ice aggradation can rapidly warm cold bedrock and precondition it for later thermal erosion of cleft ice by advected sensible heat. The timing and duration of water percolation both affect the ice-level change if initial aggradation and subsequent erosion are of the same order of magnitude. The surplus advected heat is absorbed by cleft ice loss and runoff from the cleft so that this energy is not directly detectable in ground temperatur |
format |
Article in Journal/Newspaper |
author |
Hasler, A. (Andreas) Gruber, S. (Stephan) Font, M. (Marianne) Dubois, A. (Anthony) |
author_facet |
Hasler, A. (Andreas) Gruber, S. (Stephan) Font, M. (Marianne) Dubois, A. (Anthony) |
author_sort |
Hasler, A. (Andreas) |
title |
Advective heat transport in frozen rock clefts: Conceptual model, laboratory experiments and numerical simulation |
title_short |
Advective heat transport in frozen rock clefts: Conceptual model, laboratory experiments and numerical simulation |
title_full |
Advective heat transport in frozen rock clefts: Conceptual model, laboratory experiments and numerical simulation |
title_fullStr |
Advective heat transport in frozen rock clefts: Conceptual model, laboratory experiments and numerical simulation |
title_full_unstemmed |
Advective heat transport in frozen rock clefts: Conceptual model, laboratory experiments and numerical simulation |
title_sort |
advective heat transport in frozen rock clefts: conceptual model, laboratory experiments and numerical simulation |
publishDate |
2011 |
url |
https://ir.library.carleton.ca/pub/19134 https://doi.org/10.1002/ppp.737 |
genre |
Ice permafrost Permafrost and Periglacial Processes |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes vol. 22 no. 4, pp. 378-389 |
op_relation |
https://ir.library.carleton.ca/pub/19134 doi:10.1002/ppp.737 |
op_doi |
https://doi.org/10.1002/ppp.737 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
22 |
container_issue |
4 |
container_start_page |
378 |
op_container_end_page |
389 |
_version_ |
1766027556409049088 |