Elastic deformation plays a non-negligible role in Greenland’s outlet glacier flow.
Future projections of global mean sea level change are uncertain partly because of our limited understanding of the dynamics of Greenland’s outlet glaciers. Here we study Nioghalvfjerdsbræ an outlet glacier of the Northeast Greenland Ice Stream that holds 1.1 m sealevel equivalent of ice. We use GPS...
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ftawi:oai:epic.awi.de:54920 2024-09-15T18:07:39+00:00 Elastic deformation plays a non-negligible role in Greenland’s outlet glacier flow. Christmann, Julia Helm, Veit Khan, Shfaqat Abbas Kleiner, Thomas Müller, Ralf Morlighem, Mathieu Neckel, Niklas Rückamp, Martin Steinhage, Daniel Zeising, Ole Humbert, Angelika 2021-11-09 application/pdf https://epic.awi.de/id/eprint/54920/ https://epic.awi.de/id/eprint/54920/1/s43247-021-00296-3.pdf https://hdl.handle.net/10013/epic.53d3383c-d47e-4e66-93c1-de0932d19922 unknown Springer Science and Business Media https://epic.awi.de/id/eprint/54920/1/s43247-021-00296-3.pdf Christmann, J. orcid:0000-0002-5044-1192 , Helm, V. orcid:0000-0001-7788-9328 , Khan, S. A. , Kleiner, T. orcid:0000-0001-7825-5765 , Müller, R. , Morlighem, M. , Neckel, N. orcid:0000-0003-4300-5488 , Rückamp, M. orcid:0000-0003-2512-7238 , Steinhage, D. orcid:0000-0003-4737-9751 , Zeising, O. orcid:0000-0002-1284-8098 and Humbert, A. orcid:0000-0002-0244-8760 (2021) Elastic deformation plays a non-negligible role in Greenland’s outlet glacier flow. , Communications Earth & Environment, 2 (232) . doi:10.1038/s43247-021-00296-3 <https://doi.org/10.1038/s43247-021-00296-3> , hdl:10013/epic.53d3383c-d47e-4e66-93c1-de0932d19922 EPIC3Communications Earth & Environment, Springer Science and Business Media, 2(232) Article isiRev info:eu-repo/semantics/article 2021 ftawi 2024-06-24T04:27:29Z Future projections of global mean sea level change are uncertain partly because of our limited understanding of the dynamics of Greenland’s outlet glaciers. Here we study Nioghalvfjerdsbræ an outlet glacier of the Northeast Greenland Ice Stream that holds 1.1 m sealevel equivalent of ice. We use GPS observations and numerical modelling to investigate the role of tides as well as the elastic contribution to glacier flow. We find that ocean tides alter the basal lubrication of the glacier up to 10 km inland of the grounding line and that their influence is best described by a viscoelastic rather than a viscous model. Further inland sliding is the dominant mechanism of fast glacier motion and the ice flow induces persistent elastic strain. We conclude that elastic deformation plays a role in glacier flow particularly in areas of steep topographic changes and fast ice velocities. Article in Journal/Newspaper glacier Greenland Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Future projections of global mean sea level change are uncertain partly because of our limited understanding of the dynamics of Greenland’s outlet glaciers. Here we study Nioghalvfjerdsbræ an outlet glacier of the Northeast Greenland Ice Stream that holds 1.1 m sealevel equivalent of ice. We use GPS observations and numerical modelling to investigate the role of tides as well as the elastic contribution to glacier flow. We find that ocean tides alter the basal lubrication of the glacier up to 10 km inland of the grounding line and that their influence is best described by a viscoelastic rather than a viscous model. Further inland sliding is the dominant mechanism of fast glacier motion and the ice flow induces persistent elastic strain. We conclude that elastic deformation plays a role in glacier flow particularly in areas of steep topographic changes and fast ice velocities. |
format |
Article in Journal/Newspaper |
author |
Christmann, Julia Helm, Veit Khan, Shfaqat Abbas Kleiner, Thomas Müller, Ralf Morlighem, Mathieu Neckel, Niklas Rückamp, Martin Steinhage, Daniel Zeising, Ole Humbert, Angelika |
spellingShingle |
Christmann, Julia Helm, Veit Khan, Shfaqat Abbas Kleiner, Thomas Müller, Ralf Morlighem, Mathieu Neckel, Niklas Rückamp, Martin Steinhage, Daniel Zeising, Ole Humbert, Angelika Elastic deformation plays a non-negligible role in Greenland’s outlet glacier flow. |
author_facet |
Christmann, Julia Helm, Veit Khan, Shfaqat Abbas Kleiner, Thomas Müller, Ralf Morlighem, Mathieu Neckel, Niklas Rückamp, Martin Steinhage, Daniel Zeising, Ole Humbert, Angelika |
author_sort |
Christmann, Julia |
title |
Elastic deformation plays a non-negligible role in Greenland’s outlet glacier flow. |
title_short |
Elastic deformation plays a non-negligible role in Greenland’s outlet glacier flow. |
title_full |
Elastic deformation plays a non-negligible role in Greenland’s outlet glacier flow. |
title_fullStr |
Elastic deformation plays a non-negligible role in Greenland’s outlet glacier flow. |
title_full_unstemmed |
Elastic deformation plays a non-negligible role in Greenland’s outlet glacier flow. |
title_sort |
elastic deformation plays a non-negligible role in greenland’s outlet glacier flow. |
publisher |
Springer Science and Business Media |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/54920/ https://epic.awi.de/id/eprint/54920/1/s43247-021-00296-3.pdf https://hdl.handle.net/10013/epic.53d3383c-d47e-4e66-93c1-de0932d19922 |
genre |
glacier Greenland |
genre_facet |
glacier Greenland |
op_source |
EPIC3Communications Earth & Environment, Springer Science and Business Media, 2(232) |
op_relation |
https://epic.awi.de/id/eprint/54920/1/s43247-021-00296-3.pdf Christmann, J. orcid:0000-0002-5044-1192 , Helm, V. orcid:0000-0001-7788-9328 , Khan, S. A. , Kleiner, T. orcid:0000-0001-7825-5765 , Müller, R. , Morlighem, M. , Neckel, N. orcid:0000-0003-4300-5488 , Rückamp, M. orcid:0000-0003-2512-7238 , Steinhage, D. orcid:0000-0003-4737-9751 , Zeising, O. orcid:0000-0002-1284-8098 and Humbert, A. orcid:0000-0002-0244-8760 (2021) Elastic deformation plays a non-negligible role in Greenland’s outlet glacier flow. , Communications Earth & Environment, 2 (232) . doi:10.1038/s43247-021-00296-3 <https://doi.org/10.1038/s43247-021-00296-3> , hdl:10013/epic.53d3383c-d47e-4e66-93c1-de0932d19922 |
_version_ |
1810445034242179072 |