Antarctic geothermal heat flow and its implications for tectonics and ice sheets
Published online 26 October 2022 Geothermal heat flow (GHF) is an elusive physical property, yet it can reveal past and present plate tectonic processes. In Antarctica, GHF has further consequences in predicting the response of ice sheets to climate change. In this Review, we discuss variations in A...
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/136921 2023-12-17T10:21:37+01:00 Antarctic geothermal heat flow and its implications for tectonics and ice sheets Reading, A.M. Stål, T. Halpin, J.A. Lösing, M. Ebbing, J. Shen, W. McCormack, F.S. Siddoway, C.S. Hasterok, D. 2022 https://hdl.handle.net/2440/136921 https://doi.org/10.1038/s43017-022-00348-y en eng Springer Nature http://purl.org/au-research/grants/arc/DP190100418 http://purl.org/au-research/grants/arc/DP180104074 http://purl.org/au-research/grants/arc/DE210101433 NATURE REVIEWS EARTH & ENVIRONMENT, 2022; 3(12):814-831 2662-138X https://hdl.handle.net/2440/136921 doi:10.1038/s43017-022-00348-y Hasterok, D. [0000-0002-8257-7975] © 2022, Springer Nature Limited http://dx.doi.org/10.1038/s43017-022-00348-y Cryospheric science Geophysics Tectonics Journal article 2022 ftunivadelaidedl https://doi.org/10.1038/s43017-022-00348-y 2023-11-20T23:27:17Z Published online 26 October 2022 Geothermal heat flow (GHF) is an elusive physical property, yet it can reveal past and present plate tectonic processes. In Antarctica, GHF has further consequences in predicting the response of ice sheets to climate change. In this Review, we discuss variations in Antarctic GHF models based on geophysical methods and draw insights into tectonics and GHF model usage for ice sheet modelling. The inferred GHF at continental scale for West Antarctica (up to 119 mW m−2, 95th percentile) points to numerous contributing influences, including non-steady state neotectonic processes. Combined influences cause especially high values in the vicinity of the Thwaites Glacier, a location critical for the accurate prediction of accelerated loss of Antarctic ice mass. The inferred variations across East Antarctica are more subtle (up to 66 mW m−2, 95th percentile), where slightly elevated values in some locations correspond to the influence of thinned lithosphere and tectonic units with concentrations of heat-producing elements. Fine-scale anomalies owing to heat-producing elements and horizontal components of heat flow are important for regional modelling. GHF maps comprising central values with these fine-scale anomalies captured within uncertainty bounds can thus enable improved ensemble-based ice sheet model predictions of Antarctic ice loss. Anya M. Reading, Tobias Stål, Jacqueline A. Halpin, Mareen Lösing, Jörg Ebbing, Weisen Shen, Felicity S. McCormack, Christine S. Siddoway, Derrick Hasterok Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Thwaites Glacier West Antarctica The University of Adelaide: Digital Library Antarctic East Antarctica Thwaites Glacier ENVELOPE(-106.750,-106.750,-75.500,-75.500) West Antarctica Nature Reviews Earth & Environment 3 12 814 831 |
institution |
Open Polar |
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The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Cryospheric science Geophysics Tectonics |
spellingShingle |
Cryospheric science Geophysics Tectonics Reading, A.M. Stål, T. Halpin, J.A. Lösing, M. Ebbing, J. Shen, W. McCormack, F.S. Siddoway, C.S. Hasterok, D. Antarctic geothermal heat flow and its implications for tectonics and ice sheets |
topic_facet |
Cryospheric science Geophysics Tectonics |
description |
Published online 26 October 2022 Geothermal heat flow (GHF) is an elusive physical property, yet it can reveal past and present plate tectonic processes. In Antarctica, GHF has further consequences in predicting the response of ice sheets to climate change. In this Review, we discuss variations in Antarctic GHF models based on geophysical methods and draw insights into tectonics and GHF model usage for ice sheet modelling. The inferred GHF at continental scale for West Antarctica (up to 119 mW m−2, 95th percentile) points to numerous contributing influences, including non-steady state neotectonic processes. Combined influences cause especially high values in the vicinity of the Thwaites Glacier, a location critical for the accurate prediction of accelerated loss of Antarctic ice mass. The inferred variations across East Antarctica are more subtle (up to 66 mW m−2, 95th percentile), where slightly elevated values in some locations correspond to the influence of thinned lithosphere and tectonic units with concentrations of heat-producing elements. Fine-scale anomalies owing to heat-producing elements and horizontal components of heat flow are important for regional modelling. GHF maps comprising central values with these fine-scale anomalies captured within uncertainty bounds can thus enable improved ensemble-based ice sheet model predictions of Antarctic ice loss. Anya M. Reading, Tobias Stål, Jacqueline A. Halpin, Mareen Lösing, Jörg Ebbing, Weisen Shen, Felicity S. McCormack, Christine S. Siddoway, Derrick Hasterok |
format |
Article in Journal/Newspaper |
author |
Reading, A.M. Stål, T. Halpin, J.A. Lösing, M. Ebbing, J. Shen, W. McCormack, F.S. Siddoway, C.S. Hasterok, D. |
author_facet |
Reading, A.M. Stål, T. Halpin, J.A. Lösing, M. Ebbing, J. Shen, W. McCormack, F.S. Siddoway, C.S. Hasterok, D. |
author_sort |
Reading, A.M. |
title |
Antarctic geothermal heat flow and its implications for tectonics and ice sheets |
title_short |
Antarctic geothermal heat flow and its implications for tectonics and ice sheets |
title_full |
Antarctic geothermal heat flow and its implications for tectonics and ice sheets |
title_fullStr |
Antarctic geothermal heat flow and its implications for tectonics and ice sheets |
title_full_unstemmed |
Antarctic geothermal heat flow and its implications for tectonics and ice sheets |
title_sort |
antarctic geothermal heat flow and its implications for tectonics and ice sheets |
publisher |
Springer Nature |
publishDate |
2022 |
url |
https://hdl.handle.net/2440/136921 https://doi.org/10.1038/s43017-022-00348-y |
long_lat |
ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
geographic |
Antarctic East Antarctica Thwaites Glacier West Antarctica |
geographic_facet |
Antarctic East Antarctica Thwaites Glacier West Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Thwaites Glacier West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Thwaites Glacier West Antarctica |
op_source |
http://dx.doi.org/10.1038/s43017-022-00348-y |
op_relation |
http://purl.org/au-research/grants/arc/DP190100418 http://purl.org/au-research/grants/arc/DP180104074 http://purl.org/au-research/grants/arc/DE210101433 NATURE REVIEWS EARTH & ENVIRONMENT, 2022; 3(12):814-831 2662-138X https://hdl.handle.net/2440/136921 doi:10.1038/s43017-022-00348-y Hasterok, D. [0000-0002-8257-7975] |
op_rights |
© 2022, Springer Nature Limited |
op_doi |
https://doi.org/10.1038/s43017-022-00348-y |
container_title |
Nature Reviews Earth & Environment |
container_volume |
3 |
container_issue |
12 |
container_start_page |
814 |
op_container_end_page |
831 |
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1785536637048979456 |