The grounding-zone wedge inventory on the Amundsen Sea Embayment shelf, West Antarctica: formation processes and significance for establishing reliable post-LGM retreat chronologies
Grounding-zone wedges (GZW) have been mapped on many of the formerly glaciated continental shelves around Antarctica. These GZWs record periods of grounding-line (GL) stillstand during general ice-sheet retreat following the Last Glacial Maximum (LGM; 26-19 ka BP; kiloyears before present). The pres...
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ftawi:oai:epic.awi.de:39349 2023-05-15T13:23:45+02:00 The grounding-zone wedge inventory on the Amundsen Sea Embayment shelf, West Antarctica: formation processes and significance for establishing reliable post-LGM retreat chronologies Klages, Johann Philipp Kuhn, Gerhard Hillenbrand, Claus-Dieter Smith, James A. Graham, Alastair G. C. Gohl, Karsten Wacker, Lukas 2015 application/pdf https://epic.awi.de/id/eprint/39349/ https://epic.awi.de/id/eprint/39349/1/Poster.pdf https://hdl.handle.net/10013/epic.46573 https://hdl.handle.net/10013/epic.46573.d001 unknown https://epic.awi.de/id/eprint/39349/1/Poster.pdf https://hdl.handle.net/10013/epic.46573.d001 Klages, J. P. orcid:0000-0003-0968-1183 , Kuhn, G. orcid:0000-0001-6069-7485 , Hillenbrand, C. D. , Smith, J. A. , Graham, A. G. C. , Gohl, K. orcid:0000-0002-9558-2116 and Wacker, L. (2015) The grounding-zone wedge inventory on the Amundsen Sea Embayment shelf, West Antarctica: formation processes and significance for establishing reliable post-LGM retreat chronologies , AGU Fall Meeting 2015, San Francisco, CA, USA, 14 December 2015 - 19 December 2015 . hdl:10013/epic.46573 EPIC3AGU Fall Meeting 2015, San Francisco, CA, USA, 2015-12-14-2015-12-19 Conference notRev 2015 ftawi 2021-12-24T15:40:59Z Grounding-zone wedges (GZW) have been mapped on many of the formerly glaciated continental shelves around Antarctica. These GZWs record periods of grounding-line (GL) stillstand during general ice-sheet retreat following the Last Glacial Maximum (LGM; 26-19 ka BP; kiloyears before present). The presence of GZWs along the axis of a palaeo-ice stream trough therefore indicates a style of episodic GL retreat during the migration from its initial position at the LGM to its modern position. However, precise chronological constraints for both the onset and duration of these stillstands are still lacking. Consequently, the role of GZW formation in modulating post-LGM ice-sheet retreat, and therefore ice-sheet stability cannot be reliably quantified. Additionally, this information is also vital for calculating reliable retreat rates during the past, which are essential for evaluating and understanding the significance of modern, locally very high retreat rates of glaciers draining into the Amundsen Sea Embayment. Conference Object Amundsen Sea Antarc* Antarctica Ice Sheet West Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) West Antarctica Amundsen Sea |
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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 |
Grounding-zone wedges (GZW) have been mapped on many of the formerly glaciated continental shelves around Antarctica. These GZWs record periods of grounding-line (GL) stillstand during general ice-sheet retreat following the Last Glacial Maximum (LGM; 26-19 ka BP; kiloyears before present). The presence of GZWs along the axis of a palaeo-ice stream trough therefore indicates a style of episodic GL retreat during the migration from its initial position at the LGM to its modern position. However, precise chronological constraints for both the onset and duration of these stillstands are still lacking. Consequently, the role of GZW formation in modulating post-LGM ice-sheet retreat, and therefore ice-sheet stability cannot be reliably quantified. Additionally, this information is also vital for calculating reliable retreat rates during the past, which are essential for evaluating and understanding the significance of modern, locally very high retreat rates of glaciers draining into the Amundsen Sea Embayment. |
format |
Conference Object |
author |
Klages, Johann Philipp Kuhn, Gerhard Hillenbrand, Claus-Dieter Smith, James A. Graham, Alastair G. C. Gohl, Karsten Wacker, Lukas |
spellingShingle |
Klages, Johann Philipp Kuhn, Gerhard Hillenbrand, Claus-Dieter Smith, James A. Graham, Alastair G. C. Gohl, Karsten Wacker, Lukas The grounding-zone wedge inventory on the Amundsen Sea Embayment shelf, West Antarctica: formation processes and significance for establishing reliable post-LGM retreat chronologies |
author_facet |
Klages, Johann Philipp Kuhn, Gerhard Hillenbrand, Claus-Dieter Smith, James A. Graham, Alastair G. C. Gohl, Karsten Wacker, Lukas |
author_sort |
Klages, Johann Philipp |
title |
The grounding-zone wedge inventory on the Amundsen Sea Embayment shelf, West Antarctica: formation processes and significance for establishing reliable post-LGM retreat chronologies |
title_short |
The grounding-zone wedge inventory on the Amundsen Sea Embayment shelf, West Antarctica: formation processes and significance for establishing reliable post-LGM retreat chronologies |
title_full |
The grounding-zone wedge inventory on the Amundsen Sea Embayment shelf, West Antarctica: formation processes and significance for establishing reliable post-LGM retreat chronologies |
title_fullStr |
The grounding-zone wedge inventory on the Amundsen Sea Embayment shelf, West Antarctica: formation processes and significance for establishing reliable post-LGM retreat chronologies |
title_full_unstemmed |
The grounding-zone wedge inventory on the Amundsen Sea Embayment shelf, West Antarctica: formation processes and significance for establishing reliable post-LGM retreat chronologies |
title_sort |
grounding-zone wedge inventory on the amundsen sea embayment shelf, west antarctica: formation processes and significance for establishing reliable post-lgm retreat chronologies |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/39349/ https://epic.awi.de/id/eprint/39349/1/Poster.pdf https://hdl.handle.net/10013/epic.46573 https://hdl.handle.net/10013/epic.46573.d001 |
geographic |
West Antarctica Amundsen Sea |
geographic_facet |
West Antarctica Amundsen Sea |
genre |
Amundsen Sea Antarc* Antarctica Ice Sheet West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctica Ice Sheet West Antarctica |
op_source |
EPIC3AGU Fall Meeting 2015, San Francisco, CA, USA, 2015-12-14-2015-12-19 |
op_relation |
https://epic.awi.de/id/eprint/39349/1/Poster.pdf https://hdl.handle.net/10013/epic.46573.d001 Klages, J. P. orcid:0000-0003-0968-1183 , Kuhn, G. orcid:0000-0001-6069-7485 , Hillenbrand, C. D. , Smith, J. A. , Graham, A. G. C. , Gohl, K. orcid:0000-0002-9558-2116 and Wacker, L. (2015) The grounding-zone wedge inventory on the Amundsen Sea Embayment shelf, West Antarctica: formation processes and significance for establishing reliable post-LGM retreat chronologies , AGU Fall Meeting 2015, San Francisco, CA, USA, 14 December 2015 - 19 December 2015 . hdl:10013/epic.46573 |
_version_ |
1766374730786406400 |