Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming
Ice temperature profiles from the Greenland Ice Sheet contain information on the deformation history, past climates and recent warming. We present full-depth temperature profiles from two drill sites on a flow line passing through Swiss Camp, West Greenland. Numerical modeling reveals that ice tempe...
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Language: | English |
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Copernicus Publications
2015
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ftdoajarticles:oai:doaj.org/article:73cd743ffd624c7d9654623e1da22bdf 2023-05-15T16:25:36+02:00 Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming M. P. Lüthi C. Ryser L. C. Andrews G. A. Catania M. Funk R. L. Hawley M. J. Hoffman T. A. Neumann 2015-02-01T00:00:00Z https://doi.org/10.5194/tc-9-245-2015 https://doaj.org/article/73cd743ffd624c7d9654623e1da22bdf EN eng Copernicus Publications http://www.the-cryosphere.net/9/245/2015/tc-9-245-2015.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-9-245-2015 https://doaj.org/article/73cd743ffd624c7d9654623e1da22bdf The Cryosphere, Vol 9, Iss 1, Pp 245-253 (2015) Environmental sciences GE1-350 Geology QE1-996.5 article 2015 ftdoajarticles https://doi.org/10.5194/tc-9-245-2015 2022-12-31T04:41:09Z Ice temperature profiles from the Greenland Ice Sheet contain information on the deformation history, past climates and recent warming. We present full-depth temperature profiles from two drill sites on a flow line passing through Swiss Camp, West Greenland. Numerical modeling reveals that ice temperatures are considerably higher than would be expected from heat diffusion and dissipation alone. The possible causes for this extra heat are evaluated using a Lagrangian heat flow model. The model results reveal that the observations can be explained with a combination of different processes: enhanced dissipation (strain heating) in ice-age ice, temperate paleo-firn, and cryo-hydrologic warming in deep crevasses. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere Directory of Open Access Journals: DOAJ Articles Greenland The Cryosphere 9 1 245 253 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 M. P. Lüthi C. Ryser L. C. Andrews G. A. Catania M. Funk R. L. Hawley M. J. Hoffman T. A. Neumann Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Ice temperature profiles from the Greenland Ice Sheet contain information on the deformation history, past climates and recent warming. We present full-depth temperature profiles from two drill sites on a flow line passing through Swiss Camp, West Greenland. Numerical modeling reveals that ice temperatures are considerably higher than would be expected from heat diffusion and dissipation alone. The possible causes for this extra heat are evaluated using a Lagrangian heat flow model. The model results reveal that the observations can be explained with a combination of different processes: enhanced dissipation (strain heating) in ice-age ice, temperate paleo-firn, and cryo-hydrologic warming in deep crevasses. |
format |
Article in Journal/Newspaper |
author |
M. P. Lüthi C. Ryser L. C. Andrews G. A. Catania M. Funk R. L. Hawley M. J. Hoffman T. A. Neumann |
author_facet |
M. P. Lüthi C. Ryser L. C. Andrews G. A. Catania M. Funk R. L. Hawley M. J. Hoffman T. A. Neumann |
author_sort |
M. P. Lüthi |
title |
Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming |
title_short |
Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming |
title_full |
Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming |
title_fullStr |
Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming |
title_full_unstemmed |
Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming |
title_sort |
heat sources within the greenland ice sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-245-2015 https://doaj.org/article/73cd743ffd624c7d9654623e1da22bdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Vol 9, Iss 1, Pp 245-253 (2015) |
op_relation |
http://www.the-cryosphere.net/9/245/2015/tc-9-245-2015.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-9-245-2015 https://doaj.org/article/73cd743ffd624c7d9654623e1da22bdf |
op_doi |
https://doi.org/10.5194/tc-9-245-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
1 |
container_start_page |
245 |
op_container_end_page |
253 |
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1766014405274763264 |