LETTERS Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters
Observations over the past decades show a rapid acceleration of several outlet glaciers in Greenland and Antarctica 1. One of the largest changes is a sudden switch of Jakobshavn Isbræ, a large outlet glacier feeding a deep-ocean fjord on Greenland’s west coast, from slow thickening to rapid thinnin...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.180.948 2023-05-15T13:50:35+02:00 LETTERS Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters David M. Holland Robert H. Thomas Brad De Young Mads H. Ribergaard The Pennsylvania State University CiteSeerX Archives 2008 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.180.948 http://efdl.cims.nyu.edu/publications/refereed/ngeo_greenland_08.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.180.948 http://efdl.cims.nyu.edu/publications/refereed/ngeo_greenland_08.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://efdl.cims.nyu.edu/publications/refereed/ngeo_greenland_08.pdf text 2008 ftciteseerx 2016-01-07T16:28:34Z Observations over the past decades show a rapid acceleration of several outlet glaciers in Greenland and Antarctica 1. One of the largest changes is a sudden switch of Jakobshavn Isbræ, a large outlet glacier feeding a deep-ocean fjord on Greenland’s west coast, from slow thickening to rapid thinning 2 in 1997, associated with a doubling in glacier velocity 3. Suggested explanations for the speed-up of Jakobshavn Isbræ include increased lubrication of the ice–bedrock interface as more meltwater has drained to the glacier bed during recent warmer summers 4 and weakening and break-up of the floating ice tongue that buttressed the glacier 5. Here we present hydrographic data that show a sudden increase in subsurface ocean temperature in 1997 along the entire west coast of Greenland, suggesting that the changes in Jakobshavn Isbræ were instead triggered by the arrival of relatively warm water originating from the Irminger Sea near Text Antarc* Antarctica glacier Greenland Jakobshavn Jakobshavn isbræ Unknown Greenland Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Jakobshavn Isbræ ENVELOPE(-49.917,-49.917,69.167,69.167) |
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English |
description |
Observations over the past decades show a rapid acceleration of several outlet glaciers in Greenland and Antarctica 1. One of the largest changes is a sudden switch of Jakobshavn Isbræ, a large outlet glacier feeding a deep-ocean fjord on Greenland’s west coast, from slow thickening to rapid thinning 2 in 1997, associated with a doubling in glacier velocity 3. Suggested explanations for the speed-up of Jakobshavn Isbræ include increased lubrication of the ice–bedrock interface as more meltwater has drained to the glacier bed during recent warmer summers 4 and weakening and break-up of the floating ice tongue that buttressed the glacier 5. Here we present hydrographic data that show a sudden increase in subsurface ocean temperature in 1997 along the entire west coast of Greenland, suggesting that the changes in Jakobshavn Isbræ were instead triggered by the arrival of relatively warm water originating from the Irminger Sea near |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
David M. Holland Robert H. Thomas Brad De Young Mads H. Ribergaard |
spellingShingle |
David M. Holland Robert H. Thomas Brad De Young Mads H. Ribergaard LETTERS Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters |
author_facet |
David M. Holland Robert H. Thomas Brad De Young Mads H. Ribergaard |
author_sort |
David M. Holland |
title |
LETTERS Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters |
title_short |
LETTERS Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters |
title_full |
LETTERS Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters |
title_fullStr |
LETTERS Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters |
title_full_unstemmed |
LETTERS Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters |
title_sort |
letters acceleration of jakobshavn isbræ triggered by warm subsurface ocean waters |
publishDate |
2008 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.180.948 http://efdl.cims.nyu.edu/publications/refereed/ngeo_greenland_08.pdf |
long_lat |
ENVELOPE(-34.041,-34.041,63.054,63.054) ENVELOPE(-49.917,-49.917,69.167,69.167) |
geographic |
Greenland Irminger Sea Jakobshavn Isbræ |
geographic_facet |
Greenland Irminger Sea Jakobshavn Isbræ |
genre |
Antarc* Antarctica glacier Greenland Jakobshavn Jakobshavn isbræ |
genre_facet |
Antarc* Antarctica glacier Greenland Jakobshavn Jakobshavn isbræ |
op_source |
http://efdl.cims.nyu.edu/publications/refereed/ngeo_greenland_08.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.180.948 http://efdl.cims.nyu.edu/publications/refereed/ngeo_greenland_08.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766253748746715136 |