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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Online Access: | https://doi.org/10.5194/tc-9-245-2015 https://tc.copernicus.org/articles/9/245/2015/ |
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ftcopernicus:oai:publications.copernicus.org:tc27207 2023-05-15T16:25:23+02:00 Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming Lüthi, M. P. Ryser, C. Andrews, L. C. Catania, G. A. Funk, M. Hawley, R. L. Hoffman, M. J. Neumann, T. A. 2018-09-27 application/pdf https://doi.org/10.5194/tc-9-245-2015 https://tc.copernicus.org/articles/9/245/2015/ eng eng doi:10.5194/tc-9-245-2015 https://tc.copernicus.org/articles/9/245/2015/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tc-9-245-2015 2020-07-20T16:24:47Z 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. Text Greenland Ice Sheet Copernicus Publications: E-Journals Greenland The Cryosphere 9 1 245 253 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
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 |
Text |
author |
Lüthi, M. P. Ryser, C. Andrews, L. C. Catania, G. A. Funk, M. Hawley, R. L. Hoffman, M. J. Neumann, T. A. |
spellingShingle |
Lüthi, M. P. Ryser, C. Andrews, L. C. Catania, G. A. Funk, M. Hawley, R. L. Hoffman, M. J. Neumann, T. A. Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming |
author_facet |
Lüthi, M. P. Ryser, C. Andrews, L. C. Catania, G. A. Funk, M. Hawley, R. L. Hoffman, M. J. Neumann, T. A. |
author_sort |
Lüthi, M. P. |
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 |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-9-245-2015 https://tc.copernicus.org/articles/9/245/2015/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-9-245-2015 https://tc.copernicus.org/articles/9/245/2015/ |
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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1766014144024150016 |