High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data
Geothermal heat flow in the polar regions plays a crucial role in understanding ice-sheet dynamics and predictions of sea level rise. Continental-scale indirect estimates often have a low spatial resolution and yield largest discrepancies in West Antarctica. Here we analyse geophysical data to estim...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Nature Research
2021
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/530927/ https://nora.nerc.ac.uk/id/eprint/530927/1/s43247-021-00242-3.pdf https://www.nature.com/articles/s43247-021-00242-3 |
id |
ftnerc:oai:nora.nerc.ac.uk:530927 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:530927 2023-05-15T13:24:00+02:00 High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data Dziadek, R. Ferraccioli, F. Gohl, K. 2021-08-18 text http://nora.nerc.ac.uk/id/eprint/530927/ https://nora.nerc.ac.uk/id/eprint/530927/1/s43247-021-00242-3.pdf https://www.nature.com/articles/s43247-021-00242-3 en eng Nature Research https://nora.nerc.ac.uk/id/eprint/530927/1/s43247-021-00242-3.pdf Dziadek, R.; Ferraccioli, F. orcid:0000-0002-9347-4736 Gohl, K. 2021 High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data. Communications Earth & Environment, 2 (162). 6, pp. https://doi.org/10.1038/s43247-021-00242-3 <https://doi.org/10.1038/s43247-021-00242-3> cc_by_4 CC-BY Publication - Article PeerReviewed 2021 ftnerc 2023-02-04T19:52:28Z Geothermal heat flow in the polar regions plays a crucial role in understanding ice-sheet dynamics and predictions of sea level rise. Continental-scale indirect estimates often have a low spatial resolution and yield largest discrepancies in West Antarctica. Here we analyse geophysical data to estimate geothermal heat flow in the Amundsen Sea Sector of West Antarctica. With Curie depth analysis based on a new magnetic anomaly grid compilation, we reveal variations in lithospheric thermal gradients. We show that the rapidly retreating Thwaites and Pope glaciers in particular are underlain by areas of largely elevated geothermal heat flow, which relates to the tectonic and magmatic history of the West Antarctic Rift System in this region. Our results imply that the behavior of this vulnerable sector of the West Antarctic Ice Sheet is strongly coupled to the dynamics of the underlying lithosphere. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Thwaites Glacier West Antarctica Natural Environment Research Council: NERC Open Research Archive Amundsen Sea Antarctic Thwaites Glacier ENVELOPE(-106.750,-106.750,-75.500,-75.500) West Antarctic Ice Sheet West Antarctica |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Geothermal heat flow in the polar regions plays a crucial role in understanding ice-sheet dynamics and predictions of sea level rise. Continental-scale indirect estimates often have a low spatial resolution and yield largest discrepancies in West Antarctica. Here we analyse geophysical data to estimate geothermal heat flow in the Amundsen Sea Sector of West Antarctica. With Curie depth analysis based on a new magnetic anomaly grid compilation, we reveal variations in lithospheric thermal gradients. We show that the rapidly retreating Thwaites and Pope glaciers in particular are underlain by areas of largely elevated geothermal heat flow, which relates to the tectonic and magmatic history of the West Antarctic Rift System in this region. Our results imply that the behavior of this vulnerable sector of the West Antarctic Ice Sheet is strongly coupled to the dynamics of the underlying lithosphere. |
format |
Article in Journal/Newspaper |
author |
Dziadek, R. Ferraccioli, F. Gohl, K. |
spellingShingle |
Dziadek, R. Ferraccioli, F. Gohl, K. High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
author_facet |
Dziadek, R. Ferraccioli, F. Gohl, K. |
author_sort |
Dziadek, R. |
title |
High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
title_short |
High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
title_full |
High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
title_fullStr |
High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
title_full_unstemmed |
High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
title_sort |
high geothermal heat flow beneath thwaites glacier in west antarctica inferred from aeromagnetic data |
publisher |
Nature Research |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/530927/ https://nora.nerc.ac.uk/id/eprint/530927/1/s43247-021-00242-3.pdf https://www.nature.com/articles/s43247-021-00242-3 |
long_lat |
ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
geographic |
Amundsen Sea Antarctic Thwaites Glacier West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Amundsen Sea Antarctic Thwaites Glacier West Antarctic Ice Sheet West Antarctica |
genre |
Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Thwaites Glacier West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Thwaites Glacier West Antarctica |
op_relation |
https://nora.nerc.ac.uk/id/eprint/530927/1/s43247-021-00242-3.pdf Dziadek, R.; Ferraccioli, F. orcid:0000-0002-9347-4736 Gohl, K. 2021 High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data. Communications Earth & Environment, 2 (162). 6, pp. https://doi.org/10.1038/s43247-021-00242-3 <https://doi.org/10.1038/s43247-021-00242-3> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
_version_ |
1766376874292805632 |