Antarctic geothermal heat flow and its implications for tectonics and ice sheets
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 geop...
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ftunivtasecite:oai:ecite.utas.edu.au:154143 2023-05-15T13:39:03+02:00 Antarctic geothermal heat flow and its implications for tectonics and ice sheets Reading, AM Staal, T Halpin, JA Losing, M Ebbing, J Shen, W McCormack, FS Siddoway, CS Hasterok, D 2022 https://doi.org/10.1038/s43017-022-00348-y http://ecite.utas.edu.au/154143 en eng Nature Publishing Group http://dx.doi.org/10.1038/s43017-022-00348-y http://purl.org/au-research/grants/arc/DP190100418 Reading, AM and Staal, T and Halpin, JA and Losing, M and Ebbing, J and Shen, W and McCormack, FS and Siddoway, CS and Hasterok, D, Antarctic geothermal heat flow and its implications for tectonics and ice sheets, Nature Reviews. Earth & Environment, 3 pp. 814-831. ISSN 2662-138X (2022) [Refereed Article] http://ecite.utas.edu.au/154143 Earth Sciences Geophysics Geophysics not elsewhere classified Refereed Article PeerReviewed 2022 ftunivtasecite https://doi.org/10.1038/s43017-022-00348-y 2023-03-20T23:17:23Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Thwaites Glacier West Antarctica eCite UTAS (University of Tasmania) Antarctic East Antarctica West Antarctica Thwaites Glacier ENVELOPE(-106.750,-106.750,-75.500,-75.500) Nature Reviews Earth & Environment 3 12 814 831 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
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English |
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Earth Sciences Geophysics Geophysics not elsewhere classified |
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Earth Sciences Geophysics Geophysics not elsewhere classified Reading, AM Staal, T Halpin, JA Losing, M Ebbing, J Shen, W McCormack, FS Siddoway, CS Hasterok, D Antarctic geothermal heat flow and its implications for tectonics and ice sheets |
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Earth Sciences Geophysics Geophysics not elsewhere classified |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Reading, AM Staal, T Halpin, JA Losing, M Ebbing, J Shen, W McCormack, FS Siddoway, CS Hasterok, D |
author_facet |
Reading, AM Staal, T Halpin, JA Losing, M Ebbing, J Shen, W McCormack, FS Siddoway, CS Hasterok, D |
author_sort |
Reading, AM |
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 |
Nature Publishing Group |
publishDate |
2022 |
url |
https://doi.org/10.1038/s43017-022-00348-y http://ecite.utas.edu.au/154143 |
long_lat |
ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
geographic |
Antarctic East Antarctica West Antarctica Thwaites Glacier |
geographic_facet |
Antarctic East Antarctica West Antarctica Thwaites Glacier |
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_relation |
http://dx.doi.org/10.1038/s43017-022-00348-y http://purl.org/au-research/grants/arc/DP190100418 Reading, AM and Staal, T and Halpin, JA and Losing, M and Ebbing, J and Shen, W and McCormack, FS and Siddoway, CS and Hasterok, D, Antarctic geothermal heat flow and its implications for tectonics and ice sheets, Nature Reviews. Earth & Environment, 3 pp. 814-831. ISSN 2662-138X (2022) [Refereed Article] http://ecite.utas.edu.au/154143 |
op_doi |
https://doi.org/10.1038/s43017-022-00348-y |
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Nature Reviews Earth & Environment |
container_volume |
3 |
container_issue |
12 |
container_start_page |
814 |
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831 |
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