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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ftawi:oai:epic.awi.de:53240 2024-09-15T17:42:04+00:00 Geothermal heat flow in Antarctica: current and future directions Burton-Johnson, Alex Dziadek, Ricarda Martin, Carlos 2020-11-10 application/pdf https://epic.awi.de/id/eprint/53240/ https://epic.awi.de/id/eprint/53240/1/tc-14-3843-2020.pdf https://doi.org/10.5194/tc-14-3843-2020 https://hdl.handle.net/10013/epic.d59aaad5-02bb-4ef6-bc7e-5ca91e894aed unknown Copernicus https://epic.awi.de/id/eprint/53240/1/tc-14-3843-2020.pdf Burton-Johnson, A. orcid:0000-0003-2208-0075 , Dziadek, R. orcid:0000-0001-8689-9181 and Martin, C. (2020) Geothermal heat flow in Antarctica: current and future directions , The Cryosphere, 14 (11), pp. 3843-3873 . doi:10.5194/tc-14-3843-2020 <https://doi.org/10.5194/tc-14-3843-2020> , hdl:10013/epic.d59aaad5-02bb-4ef6-bc7e-5ca91e894aed EPIC3The Cryosphere, Copernicus, 14(11), pp. 3843-3873, ISSN: 1994-0424 Article isiRev 2020 ftawi https://doi.org/10.5194/tc-14-3843-2020 2024-06-24T04:26:11Z 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) The Cryosphere 14 11 3843 3873 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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 |
Burton-Johnson, Alex Dziadek, Ricarda Martin, Carlos |
spellingShingle |
Burton-Johnson, Alex Dziadek, Ricarda Martin, Carlos Geothermal heat flow in Antarctica: current and future directions |
author_facet |
Burton-Johnson, Alex Dziadek, Ricarda Martin, Carlos |
author_sort |
Burton-Johnson, Alex |
title |
Geothermal heat flow in Antarctica: current and future directions |
title_short |
Geothermal heat flow in Antarctica: current and future directions |
title_full |
Geothermal heat flow in Antarctica: current and future directions |
title_fullStr |
Geothermal heat flow in Antarctica: current and future directions |
title_full_unstemmed |
Geothermal heat flow in Antarctica: current and future directions |
title_sort |
geothermal heat flow in antarctica: current and future directions |
publisher |
Copernicus |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/53240/ https://epic.awi.de/id/eprint/53240/1/tc-14-3843-2020.pdf https://doi.org/10.5194/tc-14-3843-2020 https://hdl.handle.net/10013/epic.d59aaad5-02bb-4ef6-bc7e-5ca91e894aed |
genre |
Antarc* Antarctic Antarctica Ice Sheet The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet The Cryosphere |
op_source |
EPIC3The Cryosphere, Copernicus, 14(11), pp. 3843-3873, ISSN: 1994-0424 |
op_relation |
https://epic.awi.de/id/eprint/53240/1/tc-14-3843-2020.pdf Burton-Johnson, A. orcid:0000-0003-2208-0075 , Dziadek, R. orcid:0000-0001-8689-9181 and Martin, C. (2020) Geothermal heat flow in Antarctica: current and future directions , The Cryosphere, 14 (11), pp. 3843-3873 . doi:10.5194/tc-14-3843-2020 <https://doi.org/10.5194/tc-14-3843-2020> , hdl:10013/epic.d59aaad5-02bb-4ef6-bc7e-5ca91e894aed |
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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1810488444742270976 |