Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream
The Barents Sea Ice Sheet was a marine-based ice sheet, i.e., it rested on the Barents Sea floor during the Last Glacial Maximum (21 ky BP). The Bjørnøyrenna Ice Stream was the largest ice stream draining the Barents Sea Ice Sheet and is regarded as an analogue for contemporary ice streams in West A...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | http://resolver.tudelft.nl/uuid:db2caeb4-8087-41cc-9e43-703e9b75f0df https://doi.org/10.1038/s41598-018-25664-6 |
id |
fttudelft:oai:tudelft.nl:uuid:db2caeb4-8087-41cc-9e43-703e9b75f0df |
---|---|
record_format |
openpolar |
spelling |
fttudelft:oai:tudelft.nl:uuid:db2caeb4-8087-41cc-9e43-703e9b75f0df 2024-04-28T07:57:27+00:00 Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream Petrini, M. (author) Colleoni, Florence (author) Kirchner, Nina (author) Hughes, Anna L.C. (author) Camerlenghi, Angelo (author) Rebesco, Michele (author) Lucchi, Renata G. (author) Forte, Emanuele (author) Colucci, Renato R. (author) Noormets, Riko (author) 2018-12-01 http://resolver.tudelft.nl/uuid:db2caeb4-8087-41cc-9e43-703e9b75f0df https://doi.org/10.1038/s41598-018-25664-6 en eng http://www.scopus.com/inward/record.url?scp=85046875591&partnerID=8YFLogxK http://resolver.tudelft.nl/uuid:db2caeb4-8087-41cc-9e43-703e9b75f0df Scientific Reports--2045-2322--b41041f7-88a3-432e-98a2-0bb69c328595 https://doi.org/10.1038/s41598-018-25664-6 © 2018 M. Petrini, Florence Colleoni, Nina Kirchner, Anna L.C. Hughes, Angelo Camerlenghi, Michele Rebesco, Renata G. Lucchi, Emanuele Forte, Renato R. Colucci, Riko Noormets journal article 2018 fttudelft https://doi.org/10.1038/s41598-018-25664-6 2024-04-09T23:49:51Z The Barents Sea Ice Sheet was a marine-based ice sheet, i.e., it rested on the Barents Sea floor during the Last Glacial Maximum (21 ky BP). The Bjørnøyrenna Ice Stream was the largest ice stream draining the Barents Sea Ice Sheet and is regarded as an analogue for contemporary ice streams in West Antarctica. Here, the retreat of the Bjørnøyrenna Ice Stream is simulated by means of two numerical ice sheet models and results assessed against geological data. We investigate the sensitivity of the ice stream to changes in ocean temperature and the impact of grounding-line physics on ice stream retreat. Our results suggest that the role played by sub-shelf melting depends on how the grounding-line physics is represented in the models. When an analytic constraint on the ice flux across the grounding line is applied, the retreat of Bjørnøyrenna Ice Stream is primarily driven by internal ice dynamics rather than by oceanic forcing. This suggests that implementations of grounding-line physics need to be carefully assessed when evaluating and predicting the response of contemporary marine-based ice sheets and individual ice streams to ongoing and future ocean warming. Physical and Space Geodesy Article in Journal/Newspaper Antarc* Antarctica Barents Sea Bjørnøyrenna ice stream Ice Sheet Sea ice West Antarctica Delft University of Technology: Institutional Repository Scientific Reports 8 1 |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
description |
The Barents Sea Ice Sheet was a marine-based ice sheet, i.e., it rested on the Barents Sea floor during the Last Glacial Maximum (21 ky BP). The Bjørnøyrenna Ice Stream was the largest ice stream draining the Barents Sea Ice Sheet and is regarded as an analogue for contemporary ice streams in West Antarctica. Here, the retreat of the Bjørnøyrenna Ice Stream is simulated by means of two numerical ice sheet models and results assessed against geological data. We investigate the sensitivity of the ice stream to changes in ocean temperature and the impact of grounding-line physics on ice stream retreat. Our results suggest that the role played by sub-shelf melting depends on how the grounding-line physics is represented in the models. When an analytic constraint on the ice flux across the grounding line is applied, the retreat of Bjørnøyrenna Ice Stream is primarily driven by internal ice dynamics rather than by oceanic forcing. This suggests that implementations of grounding-line physics need to be carefully assessed when evaluating and predicting the response of contemporary marine-based ice sheets and individual ice streams to ongoing and future ocean warming. Physical and Space Geodesy |
format |
Article in Journal/Newspaper |
author |
Petrini, M. (author) Colleoni, Florence (author) Kirchner, Nina (author) Hughes, Anna L.C. (author) Camerlenghi, Angelo (author) Rebesco, Michele (author) Lucchi, Renata G. (author) Forte, Emanuele (author) Colucci, Renato R. (author) Noormets, Riko (author) |
spellingShingle |
Petrini, M. (author) Colleoni, Florence (author) Kirchner, Nina (author) Hughes, Anna L.C. (author) Camerlenghi, Angelo (author) Rebesco, Michele (author) Lucchi, Renata G. (author) Forte, Emanuele (author) Colucci, Renato R. (author) Noormets, Riko (author) Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream |
author_facet |
Petrini, M. (author) Colleoni, Florence (author) Kirchner, Nina (author) Hughes, Anna L.C. (author) Camerlenghi, Angelo (author) Rebesco, Michele (author) Lucchi, Renata G. (author) Forte, Emanuele (author) Colucci, Renato R. (author) Noormets, Riko (author) |
author_sort |
Petrini, M. (author) |
title |
Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream |
title_short |
Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream |
title_full |
Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream |
title_fullStr |
Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream |
title_full_unstemmed |
Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream |
title_sort |
interplay of grounding-line dynamics and sub-shelf melting during retreat of the bjørnøyrenna ice stream |
publishDate |
2018 |
url |
http://resolver.tudelft.nl/uuid:db2caeb4-8087-41cc-9e43-703e9b75f0df https://doi.org/10.1038/s41598-018-25664-6 |
genre |
Antarc* Antarctica Barents Sea Bjørnøyrenna ice stream Ice Sheet Sea ice West Antarctica |
genre_facet |
Antarc* Antarctica Barents Sea Bjørnøyrenna ice stream Ice Sheet Sea ice West Antarctica |
op_relation |
http://www.scopus.com/inward/record.url?scp=85046875591&partnerID=8YFLogxK http://resolver.tudelft.nl/uuid:db2caeb4-8087-41cc-9e43-703e9b75f0df Scientific Reports--2045-2322--b41041f7-88a3-432e-98a2-0bb69c328595 https://doi.org/10.1038/s41598-018-25664-6 |
op_rights |
© 2018 M. Petrini, Florence Colleoni, Nina Kirchner, Anna L.C. Hughes, Angelo Camerlenghi, Michele Rebesco, Renata G. Lucchi, Emanuele Forte, Renato R. Colucci, Riko Noormets |
op_doi |
https://doi.org/10.1038/s41598-018-25664-6 |
container_title |
Scientific Reports |
container_volume |
8 |
container_issue |
1 |
_version_ |
1797588749342736384 |