Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry
New swath-bathymetric data acquired in 2010 and 2015 indicate a variety of glacial landforms in cross-shelf troughs of the Melville Bay (northeast Baffin Bay). These landforms reveal that, at their maximum extent, ice streams in the troughs crossed the shelf all the way to the shelf edge. Moraines,...
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Online Access: | https://epic.awi.de/id/eprint/42281/ http://www.sciencedirect.com/science/article/pii/S0277379116304930 https://hdl.handle.net/10013/epic.49001 |
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ftawi:oai:epic.awi.de:42281 2023-05-15T15:35:01+02:00 Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry Slabon, Patricia Dorschel, Boris Jokat, Wilfried Myklebust, Reidun Hebbeln, Dierk Gebhardt, Catalina 2016-12-15 https://epic.awi.de/id/eprint/42281/ http://www.sciencedirect.com/science/article/pii/S0277379116304930 https://hdl.handle.net/10013/epic.49001 unknown PERGAMON-ELSEVIER SCIENCE LTD Slabon, P. , Dorschel, B. orcid:0000-0002-3495-5927 , Jokat, W. orcid:0000-0002-7793-5854 , Myklebust, R. , Hebbeln, D. and Gebhardt, C. orcid:0000-0002-3227-0676 (2016) Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry , Quaternary Science Reviews, 154 , pp. 182-198 . doi:10.1016/j.quascirev.2016.10.022 <https://doi.org/10.1016/j.quascirev.2016.10.022> , hdl:10013/epic.49001 EPIC3Quaternary Science Reviews, PERGAMON-ELSEVIER SCIENCE LTD, 154, pp. 182-198, ISSN: 0277-3791 Article isiRev 2016 ftawi https://doi.org/10.1016/j.quascirev.2016.10.022 2021-12-24T15:42:05Z New swath-bathymetric data acquired in 2010 and 2015 indicate a variety of glacial landforms in cross-shelf troughs of the Melville Bay (northeast Baffin Bay). These landforms reveal that, at their maximum extent, ice streams in the troughs crossed the shelf all the way to the shelf edge. Moraines, grounding-zone wedges (GZWs) and subglacial till lobes on the continental shelf define a pattern of variable ice stream retreat in the individual troughs. On the outer shelf, in the northern cross-shelf trough, ice-stream retreat was slow compared to more episodic retreat in the central (at least one stabilization on the outer shelf) and southern cross-shelf trough (re-advances at the shelf edge and fast retreat thereafter). Large GZWs on the mid-to inner shelf of the troughs indicate periods of grounding-zone stabilization. According to glacial landforms, the final retreat across the inner shelf (before 8.41 ka BP) was episodic to slow. Furthermore, evidence has been found for localized ice domes with minor ice-streams on inter-trough banks. The glacial landforms in Melville Bay, thus, indicate the varying and discontinuous ice sheet retreat history across the Northwest Greenland continental shelf. Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Greenland Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Baffin Bay Greenland Quaternary Science Reviews 154 182 198 |
institution |
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 |
New swath-bathymetric data acquired in 2010 and 2015 indicate a variety of glacial landforms in cross-shelf troughs of the Melville Bay (northeast Baffin Bay). These landforms reveal that, at their maximum extent, ice streams in the troughs crossed the shelf all the way to the shelf edge. Moraines, grounding-zone wedges (GZWs) and subglacial till lobes on the continental shelf define a pattern of variable ice stream retreat in the individual troughs. On the outer shelf, in the northern cross-shelf trough, ice-stream retreat was slow compared to more episodic retreat in the central (at least one stabilization on the outer shelf) and southern cross-shelf trough (re-advances at the shelf edge and fast retreat thereafter). Large GZWs on the mid-to inner shelf of the troughs indicate periods of grounding-zone stabilization. According to glacial landforms, the final retreat across the inner shelf (before 8.41 ka BP) was episodic to slow. Furthermore, evidence has been found for localized ice domes with minor ice-streams on inter-trough banks. The glacial landforms in Melville Bay, thus, indicate the varying and discontinuous ice sheet retreat history across the Northwest Greenland continental shelf. |
format |
Article in Journal/Newspaper |
author |
Slabon, Patricia Dorschel, Boris Jokat, Wilfried Myklebust, Reidun Hebbeln, Dierk Gebhardt, Catalina |
spellingShingle |
Slabon, Patricia Dorschel, Boris Jokat, Wilfried Myklebust, Reidun Hebbeln, Dierk Gebhardt, Catalina Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry |
author_facet |
Slabon, Patricia Dorschel, Boris Jokat, Wilfried Myklebust, Reidun Hebbeln, Dierk Gebhardt, Catalina |
author_sort |
Slabon, Patricia |
title |
Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry |
title_short |
Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry |
title_full |
Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry |
title_fullStr |
Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry |
title_full_unstemmed |
Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry |
title_sort |
greenland ice sheet retreat history in the northeast baffin bay based on high-resolution bathymetry |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/42281/ http://www.sciencedirect.com/science/article/pii/S0277379116304930 https://hdl.handle.net/10013/epic.49001 |
geographic |
Baffin Bay Greenland |
geographic_facet |
Baffin Bay Greenland |
genre |
Baffin Bay Baffin Bay Baffin Greenland Ice Sheet |
genre_facet |
Baffin Bay Baffin Bay Baffin Greenland Ice Sheet |
op_source |
EPIC3Quaternary Science Reviews, PERGAMON-ELSEVIER SCIENCE LTD, 154, pp. 182-198, ISSN: 0277-3791 |
op_relation |
Slabon, P. , Dorschel, B. orcid:0000-0002-3495-5927 , Jokat, W. orcid:0000-0002-7793-5854 , Myklebust, R. , Hebbeln, D. and Gebhardt, C. orcid:0000-0002-3227-0676 (2016) Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry , Quaternary Science Reviews, 154 , pp. 182-198 . doi:10.1016/j.quascirev.2016.10.022 <https://doi.org/10.1016/j.quascirev.2016.10.022> , hdl:10013/epic.49001 |
op_doi |
https://doi.org/10.1016/j.quascirev.2016.10.022 |
container_title |
Quaternary Science Reviews |
container_volume |
154 |
container_start_page |
182 |
op_container_end_page |
198 |
_version_ |
1766365303318511616 |