Review article: Geothermal heat flow in Antarctica: current and future directions
Antarctic geothermal heat flow (GHF) affects the temperature of the ice sheet, determining its ability to slide and internally deform, as well as the behaviour of the continental crust. However, GHF remains poorly constrained, with few and sparse local, borehole-derived estimates and large discrepan...
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2020
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Online Access: | https://doi.org/10.5194/tc-14-3843-2020 https://doaj.org/article/c34e14bcfb1f4b039c4710b04c686b44 |
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ftdoajarticles:oai:doaj.org/article:c34e14bcfb1f4b039c4710b04c686b44 2023-05-15T13:56:46+02:00 Review article: Geothermal heat flow in Antarctica: current and future directions A. Burton-Johnson R. Dziadek C. Martin 2020-11-01T00:00:00Z https://doi.org/10.5194/tc-14-3843-2020 https://doaj.org/article/c34e14bcfb1f4b039c4710b04c686b44 EN eng Copernicus Publications https://tc.copernicus.org/articles/14/3843/2020/tc-14-3843-2020.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-14-3843-2020 1994-0416 1994-0424 https://doaj.org/article/c34e14bcfb1f4b039c4710b04c686b44 The Cryosphere, Vol 14, Pp 3843-3873 (2020) Environmental sciences GE1-350 Geology QE1-996.5 article 2020 ftdoajarticles https://doi.org/10.5194/tc-14-3843-2020 2022-12-31T04:18:08Z Antarctic geothermal heat flow (GHF) affects the temperature of the ice sheet, determining its ability to slide and internally deform, as well as the behaviour of the continental crust. However, GHF remains poorly constrained, with few and sparse local, borehole-derived estimates and large discrepancies in the magnitude and distribution of existing continent-scale estimates from geophysical models. We review the methods to estimate GHF, discussing the strengths and limitations of each approach; compile borehole and probe-derived estimates from measured temperature profiles; and recommend the following future directions. (1) Obtain more borehole-derived estimates from the subglacial bedrock and englacial temperature profiles. (2) Estimate GHF from inverse glaciological modelling, constrained by evidence for basal melting and englacial temperatures (e.g. using microwave emissivity). (3) Revise geophysically derived GHF estimates using a combination of Curie depth, seismic, and thermal isostasy models. (4) Integrate in these geophysical approaches a more accurate model of the structure and distribution of heat production elements within the crust and considering heterogeneities in the underlying mantle. (5) Continue international interdisciplinary communication and data access. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet The Cryosphere Directory of Open Access Journals: DOAJ Articles Antarctic The Cryosphere 14 11 3843 3873 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 A. Burton-Johnson R. Dziadek C. Martin Review article: Geothermal heat flow in Antarctica: current and future directions |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Antarctic geothermal heat flow (GHF) affects the temperature of the ice sheet, determining its ability to slide and internally deform, as well as the behaviour of the continental crust. However, GHF remains poorly constrained, with few and sparse local, borehole-derived estimates and large discrepancies in the magnitude and distribution of existing continent-scale estimates from geophysical models. We review the methods to estimate GHF, discussing the strengths and limitations of each approach; compile borehole and probe-derived estimates from measured temperature profiles; and recommend the following future directions. (1) Obtain more borehole-derived estimates from the subglacial bedrock and englacial temperature profiles. (2) Estimate GHF from inverse glaciological modelling, constrained by evidence for basal melting and englacial temperatures (e.g. using microwave emissivity). (3) Revise geophysically derived GHF estimates using a combination of Curie depth, seismic, and thermal isostasy models. (4) Integrate in these geophysical approaches a more accurate model of the structure and distribution of heat production elements within the crust and considering heterogeneities in the underlying mantle. (5) Continue international interdisciplinary communication and data access. |
format |
Article in Journal/Newspaper |
author |
A. Burton-Johnson R. Dziadek C. Martin |
author_facet |
A. Burton-Johnson R. Dziadek C. Martin |
author_sort |
A. Burton-Johnson |
title |
Review article: Geothermal heat flow in Antarctica: current and future directions |
title_short |
Review article: Geothermal heat flow in Antarctica: current and future directions |
title_full |
Review article: Geothermal heat flow in Antarctica: current and future directions |
title_fullStr |
Review article: Geothermal heat flow in Antarctica: current and future directions |
title_full_unstemmed |
Review article: Geothermal heat flow in Antarctica: current and future directions |
title_sort |
review article: geothermal heat flow in antarctica: current and future directions |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-14-3843-2020 https://doaj.org/article/c34e14bcfb1f4b039c4710b04c686b44 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Vol 14, Pp 3843-3873 (2020) |
op_relation |
https://tc.copernicus.org/articles/14/3843/2020/tc-14-3843-2020.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-14-3843-2020 1994-0416 1994-0424 https://doaj.org/article/c34e14bcfb1f4b039c4710b04c686b44 |
op_doi |
https://doi.org/10.5194/tc-14-3843-2020 |
container_title |
The Cryosphere |
container_volume |
14 |
container_issue |
11 |
container_start_page |
3843 |
op_container_end_page |
3873 |
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1766264341510750208 |