NEGIS - A unique feature in Greenland?
Reliable knowledge of ice discharge dynamics for the Greenland Ice Sheet via its ice streams is essential if we are to understand its stability under future climate scenarios. Little however is known about the paleo ice-sheet configuration in areas still covered by ice. Here we use radio-echo soundi...
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ftawi:oai:epic.awi.de:55882 2023-05-15T16:24:26+02:00 NEGIS - A unique feature in Greenland? Franke, Steven Bons, Paul D. Westhoff, Julien Weikusat, Ilka Binder, Tobias Streng, Kyra Steinhage, Daniel Helm, Veit Eisen, Olaf Paden, John Eagles, Graeme Jansen, Daniela 2022-03-29 application/pdf https://epic.awi.de/id/eprint/55882/ https://epic.awi.de/id/eprint/55882/1/EGRIP_Seminar_2022_March_29_sfranke.pdf https://hdl.handle.net/10013/epic.cc7ceca7-0a6b-4558-a1f2-8d17aaf59a24 https://hdl.handle.net/ unknown https://epic.awi.de/id/eprint/55882/1/EGRIP_Seminar_2022_March_29_sfranke.pdf https://hdl.handle.net/ Franke, S. orcid:0000-0001-8462-4379 , Bons, P. D. , Westhoff, J. , Weikusat, I. orcid:0000-0002-3023-6036 , Binder, T. , Streng, K. , Steinhage, D. orcid:0000-0003-4737-9751 , Helm, V. orcid:0000-0001-7788-9328 , Eisen, O. orcid:0000-0002-6380-962X , Paden, J. , Eagles, G. orcid:0000-0001-5325-0810 and Jansen, D. orcid:0000-0002-4412-5820 (2022) NEGIS - A unique feature in Greenland? , EastGRIP International Spring Seminar Series (EISSS) 2022, Online, March 2022 - April 2022 . hdl:10013/epic.cc7ceca7-0a6b-4558-a1f2-8d17aaf59a24 EPIC3EastGRIP International Spring Seminar Series (EISSS) 2022, Online, 2022-03-2022-04 Conference notRev 2022 ftawi 2022-04-10T23:10:08Z Reliable knowledge of ice discharge dynamics for the Greenland Ice Sheet via its ice streams is essential if we are to understand its stability under future climate scenarios. Little however is known about the paleo ice-sheet configuration in areas still covered by ice. Here we use radio-echo sounding data to decipher the regional deformation history of the north-eastern Greenland Ice Sheet from its internal stratigraphy. We map folds deep below the surface that we attribute to the activity of a now-extinct ice stream, which shows strong similarities to the Northeast Greenland Ice Stream. We propose that locally this ancient ice flow regime reached much further inland than today’s and was ceased in the Holocene. The new insight that major ice streams may abruptly disappear will affect future approaches to understanding and modelling the response of Earth’s ice sheets to global warming. Conference Object Greenland Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Greenland |
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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 |
Reliable knowledge of ice discharge dynamics for the Greenland Ice Sheet via its ice streams is essential if we are to understand its stability under future climate scenarios. Little however is known about the paleo ice-sheet configuration in areas still covered by ice. Here we use radio-echo sounding data to decipher the regional deformation history of the north-eastern Greenland Ice Sheet from its internal stratigraphy. We map folds deep below the surface that we attribute to the activity of a now-extinct ice stream, which shows strong similarities to the Northeast Greenland Ice Stream. We propose that locally this ancient ice flow regime reached much further inland than today’s and was ceased in the Holocene. The new insight that major ice streams may abruptly disappear will affect future approaches to understanding and modelling the response of Earth’s ice sheets to global warming. |
format |
Conference Object |
author |
Franke, Steven Bons, Paul D. Westhoff, Julien Weikusat, Ilka Binder, Tobias Streng, Kyra Steinhage, Daniel Helm, Veit Eisen, Olaf Paden, John Eagles, Graeme Jansen, Daniela |
spellingShingle |
Franke, Steven Bons, Paul D. Westhoff, Julien Weikusat, Ilka Binder, Tobias Streng, Kyra Steinhage, Daniel Helm, Veit Eisen, Olaf Paden, John Eagles, Graeme Jansen, Daniela NEGIS - A unique feature in Greenland? |
author_facet |
Franke, Steven Bons, Paul D. Westhoff, Julien Weikusat, Ilka Binder, Tobias Streng, Kyra Steinhage, Daniel Helm, Veit Eisen, Olaf Paden, John Eagles, Graeme Jansen, Daniela |
author_sort |
Franke, Steven |
title |
NEGIS - A unique feature in Greenland? |
title_short |
NEGIS - A unique feature in Greenland? |
title_full |
NEGIS - A unique feature in Greenland? |
title_fullStr |
NEGIS - A unique feature in Greenland? |
title_full_unstemmed |
NEGIS - A unique feature in Greenland? |
title_sort |
negis - a unique feature in greenland? |
publishDate |
2022 |
url |
https://epic.awi.de/id/eprint/55882/ https://epic.awi.de/id/eprint/55882/1/EGRIP_Seminar_2022_March_29_sfranke.pdf https://hdl.handle.net/10013/epic.cc7ceca7-0a6b-4558-a1f2-8d17aaf59a24 https://hdl.handle.net/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
EPIC3EastGRIP International Spring Seminar Series (EISSS) 2022, Online, 2022-03-2022-04 |
op_relation |
https://epic.awi.de/id/eprint/55882/1/EGRIP_Seminar_2022_March_29_sfranke.pdf https://hdl.handle.net/ Franke, S. orcid:0000-0001-8462-4379 , Bons, P. D. , Westhoff, J. , Weikusat, I. orcid:0000-0002-3023-6036 , Binder, T. , Streng, K. , Steinhage, D. orcid:0000-0003-4737-9751 , Helm, V. orcid:0000-0001-7788-9328 , Eisen, O. orcid:0000-0002-6380-962X , Paden, J. , Eagles, G. orcid:0000-0001-5325-0810 and Jansen, D. orcid:0000-0002-4412-5820 (2022) NEGIS - A unique feature in Greenland? , EastGRIP International Spring Seminar Series (EISSS) 2022, Online, March 2022 - April 2022 . hdl:10013/epic.cc7ceca7-0a6b-4558-a1f2-8d17aaf59a24 |
_version_ |
1766012887909793792 |