Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin
The landscape of Antarctica, hidden beneath kilometre-thick ice in most places, has been shaped by the interactions between tectonic and erosional processes. The flow dynamics of the thick ice cover deepened pre-formed topographic depressions by glacial erosion, but also preserved the subglacial lan...
Published in: | Earth Surface Processes and Landforms |
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JOHN WILEY & SONS LTD
2021
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Online Access: | https://epic.awi.de/id/eprint/54707/ https://epic.awi.de/id/eprint/54707/1/2021_Franke_esp_5203_compressed.pdf https://onlinelibrary.wiley.com/doi/10.1002/esp.5203 https://hdl.handle.net/10013/epic.4b0d069e-22a4-4f12-a5e3-28829d52b5ca https://hdl.handle.net/ |
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ftawi:oai:epic.awi.de:54707 2023-05-15T13:45:22+02:00 Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin Franke, Steven Eisermann, Hannes Jokat, Wilfried Eagles, Graeme Asseng, Jölund Miller, Heinrich Steinhage, Daniel Helm, Veit Eisen, Olaf Jansen, Daniela 2021-07-14 application/pdf https://epic.awi.de/id/eprint/54707/ https://epic.awi.de/id/eprint/54707/1/2021_Franke_esp_5203_compressed.pdf https://onlinelibrary.wiley.com/doi/10.1002/esp.5203 https://hdl.handle.net/10013/epic.4b0d069e-22a4-4f12-a5e3-28829d52b5ca https://hdl.handle.net/ unknown JOHN WILEY & SONS LTD https://epic.awi.de/id/eprint/54707/1/2021_Franke_esp_5203_compressed.pdf https://hdl.handle.net/ Franke, S. orcid:0000-0001-8462-4379 , Eisermann, H. orcid:0000-0002-5604-6484 , Jokat, W. orcid:0000-0002-7793-5854 , Eagles, G. orcid:0000-0001-5325-0810 , Asseng, J. , Miller, H. , Steinhage, D. orcid:0000-0003-4737-9751 , Helm, V. orcid:0000-0001-7788-9328 , Eisen, O. orcid:0000-0002-6380-962X and Jansen, D. orcid:0000-0002-4412-5820 (2021) Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin , Earth Surface Processes and Landforms, 46 (13), 2728- 2745 . doi:10.1002/esp.5203 <https://doi.org/10.1002/esp.5203> , hdl:10013/epic.4b0d069e-22a4-4f12-a5e3-28829d52b5ca EPIC3Earth Surface Processes and Landforms, JOHN WILEY & SONS LTD, 46(13), pp. 2728- 2745, ISSN: 0197-9337 Article isiRev 2021 ftawi https://doi.org/10.1002/esp.5203 2021-12-24T15:46:32Z The landscape of Antarctica, hidden beneath kilometre-thick ice in most places, has been shaped by the interactions between tectonic and erosional processes. The flow dynamics of the thick ice cover deepened pre-formed topographic depressions by glacial erosion, but also preserved the subglacial landscapes in regions with moderate to slow ice flow. Mapping the spatial variability of these structures provides the basis for reconstruction of the evolution of subglacial morphology. This study focuses on the Jutulstraumen Glacier drainage system in Dronning Maud Land, East Antarctica. The Jutulstraumen Glacier reaches the ocean via the Jutulstraumen Graben, which is the only significant passage for draining the East Antarctic Ice Sheet through the western part of the Dronning Maud Land mountain chain. We acquired new bed topography data during an airborne radar campaign in the region upstream of the Jutulstraumen Graben to characterise the source area of the glacier. The new data show a deep relief to be generally under-represented in available bed topography compilations. Our analysis of the bed topography, valley characteristics and bed roughness leads to the conclusion that much more of the alpine landscape that would have formed prior to the Antarctic Ice Sheet is preserved than previously anticipated. We identify an active and deeply eroded U-shaped valley network next to largely preserved passive fluvial and glacial modified landscapes. Based on the landscape classification, we reconstruct the temporal sequence by which ice flow modified the topography since the beginning of the glaciation of Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet Jutulstraumen Glacier Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Dronning Maud Land East Antarctic Ice Sheet East Antarctica Jutulstraumen ENVELOPE(-1.000,-1.000,-72.000,-72.000) Jutulstraumen Glacier ENVELOPE(-0.500,-0.500,-71.583,-71.583) The Antarctic Earth Surface Processes and Landforms 46 13 2728 2745 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The landscape of Antarctica, hidden beneath kilometre-thick ice in most places, has been shaped by the interactions between tectonic and erosional processes. The flow dynamics of the thick ice cover deepened pre-formed topographic depressions by glacial erosion, but also preserved the subglacial landscapes in regions with moderate to slow ice flow. Mapping the spatial variability of these structures provides the basis for reconstruction of the evolution of subglacial morphology. This study focuses on the Jutulstraumen Glacier drainage system in Dronning Maud Land, East Antarctica. The Jutulstraumen Glacier reaches the ocean via the Jutulstraumen Graben, which is the only significant passage for draining the East Antarctic Ice Sheet through the western part of the Dronning Maud Land mountain chain. We acquired new bed topography data during an airborne radar campaign in the region upstream of the Jutulstraumen Graben to characterise the source area of the glacier. The new data show a deep relief to be generally under-represented in available bed topography compilations. Our analysis of the bed topography, valley characteristics and bed roughness leads to the conclusion that much more of the alpine landscape that would have formed prior to the Antarctic Ice Sheet is preserved than previously anticipated. We identify an active and deeply eroded U-shaped valley network next to largely preserved passive fluvial and glacial modified landscapes. Based on the landscape classification, we reconstruct the temporal sequence by which ice flow modified the topography since the beginning of the glaciation of Antarctica. |
format |
Article in Journal/Newspaper |
author |
Franke, Steven Eisermann, Hannes Jokat, Wilfried Eagles, Graeme Asseng, Jölund Miller, Heinrich Steinhage, Daniel Helm, Veit Eisen, Olaf Jansen, Daniela |
spellingShingle |
Franke, Steven Eisermann, Hannes Jokat, Wilfried Eagles, Graeme Asseng, Jölund Miller, Heinrich Steinhage, Daniel Helm, Veit Eisen, Olaf Jansen, Daniela Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin |
author_facet |
Franke, Steven Eisermann, Hannes Jokat, Wilfried Eagles, Graeme Asseng, Jölund Miller, Heinrich Steinhage, Daniel Helm, Veit Eisen, Olaf Jansen, Daniela |
author_sort |
Franke, Steven |
title |
Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin |
title_short |
Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin |
title_full |
Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin |
title_fullStr |
Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin |
title_full_unstemmed |
Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin |
title_sort |
preserved landscapes underneath the antarctic ice sheet reveal the geomorphological history of jutulstraumen basin |
publisher |
JOHN WILEY & SONS LTD |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/54707/ https://epic.awi.de/id/eprint/54707/1/2021_Franke_esp_5203_compressed.pdf https://onlinelibrary.wiley.com/doi/10.1002/esp.5203 https://hdl.handle.net/10013/epic.4b0d069e-22a4-4f12-a5e3-28829d52b5ca https://hdl.handle.net/ |
long_lat |
ENVELOPE(-1.000,-1.000,-72.000,-72.000) ENVELOPE(-0.500,-0.500,-71.583,-71.583) |
geographic |
Antarctic Dronning Maud Land East Antarctic Ice Sheet East Antarctica Jutulstraumen Jutulstraumen Glacier The Antarctic |
geographic_facet |
Antarctic Dronning Maud Land East Antarctic Ice Sheet East Antarctica Jutulstraumen Jutulstraumen Glacier The Antarctic |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet Jutulstraumen Glacier |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet Jutulstraumen Glacier |
op_source |
EPIC3Earth Surface Processes and Landforms, JOHN WILEY & SONS LTD, 46(13), pp. 2728- 2745, ISSN: 0197-9337 |
op_relation |
https://epic.awi.de/id/eprint/54707/1/2021_Franke_esp_5203_compressed.pdf https://hdl.handle.net/ Franke, S. orcid:0000-0001-8462-4379 , Eisermann, H. orcid:0000-0002-5604-6484 , Jokat, W. orcid:0000-0002-7793-5854 , Eagles, G. orcid:0000-0001-5325-0810 , Asseng, J. , Miller, H. , Steinhage, D. orcid:0000-0003-4737-9751 , Helm, V. orcid:0000-0001-7788-9328 , Eisen, O. orcid:0000-0002-6380-962X and Jansen, D. orcid:0000-0002-4412-5820 (2021) Preserved landscapes underneath the Antarctic Ice Sheet reveal the geomorphological history of Jutulstraumen Basin , Earth Surface Processes and Landforms, 46 (13), 2728- 2745 . doi:10.1002/esp.5203 <https://doi.org/10.1002/esp.5203> , hdl:10013/epic.4b0d069e-22a4-4f12-a5e3-28829d52b5ca |
op_doi |
https://doi.org/10.1002/esp.5203 |
container_title |
Earth Surface Processes and Landforms |
container_volume |
46 |
container_issue |
13 |
container_start_page |
2728 |
op_container_end_page |
2745 |
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1766222567149928448 |