Brief Communication: Further summer speedup of Jakobshavn Isbræ
We have extended the record of flow speed on Jakobshavn Isbræ through the summer of 2013. These new data reveal large seasonal speedups, 30 to 50% greater than previous summers. At a point a few kilometres inland from the terminus, the mean annual speed for 2012 is nearly three times as great as tha...
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2014-02-01
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Series: | The Cryosphere |
Online Access: | http://www.the-cryosphere.net/8/209/2014/tc-8-209-2014.pdf |
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doaj-06a181843e834498bf61d9f500fb3b7d2020-11-25T00:35:12ZengCopernicus PublicationsThe Cryosphere1994-04161994-04242014-02-018120921410.5194/tc-8-209-2014Brief Communication: Further summer speedup of Jakobshavn IsbræI. Joughin0B. E. Smith1D. E. Shean2D. Floricioiu3Polar Science Center, Applied Physics Lab, University of Washington, 1013 NE 40th St., Seattle, WA 98105-6698, USAPolar Science Center, Applied Physics Lab, University of Washington, 1013 NE 40th St., Seattle, WA 98105-6698, USAPolar Science Center, Applied Physics Lab, University of Washington, 1013 NE 40th St., Seattle, WA 98105-6698, USAGerman Aerospace Center (DLR), Remote Sensing Technology Institute, SAR Signal Processing, Muenchenerstr. 20, 82230 Wessling, GermanyWe have extended the record of flow speed on Jakobshavn Isbræ through the summer of 2013. These new data reveal large seasonal speedups, 30 to 50% greater than previous summers. At a point a few kilometres inland from the terminus, the mean annual speed for 2012 is nearly three times as great as that in the mid-1990s, while the peak summer speeds are more than a factor of four greater. These speeds were achieved as the glacier terminus appears to have retreated to the bottom of an over-deepened basin with a depth of ~ 1300 m below sea level. The terminus is likely to reach the deepest section of the trough within a few decades, after which it could rapidly retreat to the shallower regions ~ 50 km farther upstream, potentially by the end of this century.http://www.the-cryosphere.net/8/209/2014/tc-8-209-2014.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
I. Joughin B. E. Smith D. E. Shean D. Floricioiu |
spellingShingle |
I. Joughin B. E. Smith D. E. Shean D. Floricioiu Brief Communication: Further summer speedup of Jakobshavn Isbræ The Cryosphere |
author_facet |
I. Joughin B. E. Smith D. E. Shean D. Floricioiu |
author_sort |
I. Joughin |
title |
Brief Communication: Further summer speedup of Jakobshavn Isbræ |
title_short |
Brief Communication: Further summer speedup of Jakobshavn Isbræ |
title_full |
Brief Communication: Further summer speedup of Jakobshavn Isbræ |
title_fullStr |
Brief Communication: Further summer speedup of Jakobshavn Isbræ |
title_full_unstemmed |
Brief Communication: Further summer speedup of Jakobshavn Isbræ |
title_sort |
brief communication: further summer speedup of jakobshavn isbræ |
publisher |
Copernicus Publications |
series |
The Cryosphere |
issn |
1994-0416 1994-0424 |
publishDate |
2014-02-01 |
description |
We have extended the record of flow speed on Jakobshavn Isbræ through
the summer of 2013. These new data reveal large seasonal speedups, 30 to
50% greater than previous summers. At a point a few kilometres inland from
the terminus, the mean annual speed for 2012 is nearly three times as great
as that in the mid-1990s, while the peak summer speeds are more than a
factor of four greater. These speeds were achieved as the glacier terminus
appears to have retreated to the bottom of an over-deepened basin with a
depth of ~ 1300 m below sea level. The terminus is likely
to reach the deepest section of the trough within a few decades, after which
it could rapidly retreat to the shallower regions ~ 50 km
farther upstream, potentially by the end of this century. |
url |
http://www.the-cryosphere.net/8/209/2014/tc-8-209-2014.pdf |
work_keys_str_mv |
AT ijoughin briefcommunicationfurthersummerspeedupofjakobshavnisbræ AT besmith briefcommunicationfurthersummerspeedupofjakobshavnisbræ AT deshean briefcommunicationfurthersummerspeedupofjakobshavnisbræ AT dfloricioiu briefcommunicationfurthersummerspeedupofjakobshavnisbræ |
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