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...
Main Authors: | , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus
2015
|
Subjects: | |
Online Access: | https://hdl.handle.net/20.500.11850/99931 https://doi.org/10.3929/ethz-b-000099931 |
id |
ftethz:oai:www.research-collection.ethz.ch:20.500.11850/99931 |
---|---|
record_format |
openpolar |
spelling |
ftethz:oai:www.research-collection.ethz.ch:20.500.11850/99931 2023-08-20T04:06:48+02:00 Heat sources within the Greenland Ice Sheet: Dissipation, temperate paleo-firn and cryo-hydrologic warming Lüthi, Martin P. Ryser, Claudia Andrews, Lauren C. Catania, Ginny A. Funk, Martin Hawley, Robert L. Hoffman, Matthew J. Neumann, Thomas A. 2015 application/application/pdf https://hdl.handle.net/20.500.11850/99931 https://doi.org/10.3929/ethz-b-000099931 en eng Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-9-245-2015 http://hdl.handle.net/20.500.11850/99931 doi:10.3929/ethz-b-000099931 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported The Cryosphere, 9 (1) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftethz https://doi.org/20.500.11850/9993110.3929/ethz-b-00009993110.5194/tc-9-245-2015 2023-07-30T23:50:22Z 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. ISSN:1994-0416 ISSN:1994-0424 Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere ETH Zürich Research Collection Greenland |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
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. ISSN:1994-0416 ISSN:1994-0424 |
format |
Article in Journal/Newspaper |
author |
Lüthi, Martin P. Ryser, Claudia Andrews, Lauren C. Catania, Ginny A. Funk, Martin Hawley, Robert L. Hoffman, Matthew J. Neumann, Thomas A. |
spellingShingle |
Lüthi, Martin P. Ryser, Claudia Andrews, Lauren C. Catania, Ginny A. Funk, Martin Hawley, Robert L. Hoffman, Matthew J. Neumann, Thomas A. Heat sources within the Greenland Ice Sheet: Dissipation, temperate paleo-firn and cryo-hydrologic warming |
author_facet |
Lüthi, Martin P. Ryser, Claudia Andrews, Lauren C. Catania, Ginny A. Funk, Martin Hawley, Robert L. Hoffman, Matthew J. Neumann, Thomas A. |
author_sort |
Lüthi, Martin 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 |
publisher |
Copernicus |
publishDate |
2015 |
url |
https://hdl.handle.net/20.500.11850/99931 https://doi.org/10.3929/ethz-b-000099931 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, 9 (1) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-9-245-2015 http://hdl.handle.net/20.500.11850/99931 doi:10.3929/ethz-b-000099931 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported |
op_doi |
https://doi.org/20.500.11850/9993110.3929/ethz-b-00009993110.5194/tc-9-245-2015 |
_version_ |
1774718138176241664 |