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Brief Communication: Further summer speedup of Jakobshavn Isbræ

Joughin, Ian and Smith, Ben and Shean, David and Floricioiu, Dana (2014) Brief Communication: Further summer speedup of Jakobshavn Isbræ. The Cryosphere, 8, pp. 209-214. Copernicus Publications. doi: doi:10.5194/tc-8-209-2014. ISSN 1994-0416.

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Official URL: http://www.the-cryosphere.net/8/209/2014/


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 ~1300m 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.

Item URL in elib:https://elib.dlr.de/92560/
Document Type:Article
Title:Brief Communication: Further summer speedup of Jakobshavn Isbræ
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Joughin, IanPolar Science Center, Applied Physics Lab, University of Washington, Seattle, WA, USAUNSPECIFIED
Smith, BenPolar Science Center, Applied Physics Lab, University of Washington, 1013 NE 40th St., Seattle, WA 98105-6698, USAUNSPECIFIED
Shean, DavidPolar Science Center, Applied Physics Lab, University of Washington, SeattleUNSPECIFIED
Floricioiu, Danadana.floricioiu (at) dlr.deUNSPECIFIED
Journal or Publication Title:The Cryosphere
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :doi:10.5194/tc-8-209-2014
Page Range:pp. 209-214
EditorsEmailEditor's ORCID iD
Bamber, Jonathan L.j.bamber@bristol.ac.ukUNSPECIFIED
Gruber, Stephanstephan.gruber@carleton.caUNSPECIFIED
Gudmunsson, Hilmar G.ghg@bas.ac.ukUNSPECIFIED
van den Broeke, Michielm.r.vandenbroeke@uu.nlUNSPECIFIED
Publisher:Copernicus Publications
Keywords:ice velocity, TerraSAR-X
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Floricioiu, Dr. Dana
Deposited On:27 Nov 2014 13:03
Last Modified:09 Jan 2019 12:23

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