Tedstone, A.J., Nienow, P.W., Gourmelen, N. et al. (1 more author) (2014) Greenland ice sheet annual motion insensitive to spatial variations in subglacial hydraulic structure. Geophysical Research Letters, 41 (24). pp. 8910-8917. ISSN 0094-8276
Abstract
We present ice velocities observed with global positioning systems and TerraSAR-X/TanDEM-Xin a land-terminating region of the southwest Greenland ice sheet (GrIS) during the melt year 2012–2013, toexamine the spatial pattern of seasonal and annual ice motion. We find that while spatial variability in theconfiguration of the subglacial drainage system controls ice motion at short timescales, this configurationhas negligible impact on the spatial pattern of the proportion of annual motion which occurs duringsummer. While absolute annual velocities vary substantially, the proportional contribution of summermotion to annual motion does not. These observations suggest that in land-terminating margins of the GrIS,subglacial hydrology does not significantly influence spatial variations in net summer speedup.Furthermore, our findings imply that not every feature of the subglacial drainage system needs to beresolved in ice sheet models.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2014. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Social Sciences (Sheffield) > Department of Geography (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 07 Jul 2017 09:49 |
Last Modified: | 07 Jul 2017 09:49 |
Published Version: | https://doi.org/10.1002/2014GL062386 |
Status: | Published |
Publisher: | American Geophysical Union (AGU) |
Refereed: | Yes |
Identification Number: | 10.1002/2014GL062386 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:118093 |
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