Heat flux distribution of Antarctica unveiled
Antarctica is the largest reservoir of ice on Earth. Understanding its ice sheet dynamics is crucial to unraveling past global climate change and making robust climatic and sea level predictions. Of the basic parameters that shape and control ice flow, the most poorly known is geothermal heat flux....
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American Geophysical Union
2017
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ftnerc:oai:nora.nerc.ac.uk:518359 2023-05-15T13:49:34+02:00 Heat flux distribution of Antarctica unveiled Martos, Yasmina M. Catalan, Manuel Jordan, Tom A. Golynsky, Alexander Golynsky, Dmitry Eagles, Graeme Vaughan, David G. 2017-11-28 text http://nora.nerc.ac.uk/id/eprint/518359/ https://nora.nerc.ac.uk/id/eprint/518359/1/Martos_et_al-2017-Geophysical_Research_Letters.pdf https://doi.org/10.1002/2017GL075609 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/518359/1/Martos_et_al-2017-Geophysical_Research_Letters.pdf Martos, Yasmina M.; Catalan, Manuel; Jordan, Tom A. orcid:0000-0003-2780-1986 Golynsky, Alexander; Golynsky, Dmitry; Eagles, Graeme; Vaughan, David G. orcid:0000-0002-9065-0570 . 2017 Heat flux distribution of Antarctica unveiled. Geophysical Research Letters, 44 (22). 11,417-11,426. https://doi.org/10.1002/2017GL075609 <https://doi.org/10.1002/2017GL075609> Publication - Article PeerReviewed 2017 ftnerc https://doi.org/10.1002/2017GL075609 2023-02-04T19:45:35Z Antarctica is the largest reservoir of ice on Earth. Understanding its ice sheet dynamics is crucial to unraveling past global climate change and making robust climatic and sea level predictions. Of the basic parameters that shape and control ice flow, the most poorly known is geothermal heat flux. Direct observations of heat flux are difficult to obtain in Antarctica, and until now continent-wide heat flux maps have only been derived from low-resolution satellite magnetic and seismological data. We present a high resolution heat flux map and associated uncertainty derived from spectral analysis of the most advanced continental compilation of airborne magnetic data. Small-scale spatial variability and features consistent with known geology are better reproduced than in previous models, between 36% and 50%. Our high-resolution heat-flux map and its uncertainty distribution provide an important new boundary condition to be used in studies on future subglacial hydrology, ice-sheet dynamics and sea-level change Article in Journal/Newspaper Antarc* Antarctica Ice Sheet Natural Environment Research Council: NERC Open Research Archive Geophysical Research Letters 44 22 11,417 11,426 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
Antarctica is the largest reservoir of ice on Earth. Understanding its ice sheet dynamics is crucial to unraveling past global climate change and making robust climatic and sea level predictions. Of the basic parameters that shape and control ice flow, the most poorly known is geothermal heat flux. Direct observations of heat flux are difficult to obtain in Antarctica, and until now continent-wide heat flux maps have only been derived from low-resolution satellite magnetic and seismological data. We present a high resolution heat flux map and associated uncertainty derived from spectral analysis of the most advanced continental compilation of airborne magnetic data. Small-scale spatial variability and features consistent with known geology are better reproduced than in previous models, between 36% and 50%. Our high-resolution heat-flux map and its uncertainty distribution provide an important new boundary condition to be used in studies on future subglacial hydrology, ice-sheet dynamics and sea-level change |
format |
Article in Journal/Newspaper |
author |
Martos, Yasmina M. Catalan, Manuel Jordan, Tom A. Golynsky, Alexander Golynsky, Dmitry Eagles, Graeme Vaughan, David G. |
spellingShingle |
Martos, Yasmina M. Catalan, Manuel Jordan, Tom A. Golynsky, Alexander Golynsky, Dmitry Eagles, Graeme Vaughan, David G. Heat flux distribution of Antarctica unveiled |
author_facet |
Martos, Yasmina M. Catalan, Manuel Jordan, Tom A. Golynsky, Alexander Golynsky, Dmitry Eagles, Graeme Vaughan, David G. |
author_sort |
Martos, Yasmina M. |
title |
Heat flux distribution of Antarctica unveiled |
title_short |
Heat flux distribution of Antarctica unveiled |
title_full |
Heat flux distribution of Antarctica unveiled |
title_fullStr |
Heat flux distribution of Antarctica unveiled |
title_full_unstemmed |
Heat flux distribution of Antarctica unveiled |
title_sort |
heat flux distribution of antarctica unveiled |
publisher |
American Geophysical Union |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/518359/ https://nora.nerc.ac.uk/id/eprint/518359/1/Martos_et_al-2017-Geophysical_Research_Letters.pdf https://doi.org/10.1002/2017GL075609 |
genre |
Antarc* Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctica Ice Sheet |
op_relation |
https://nora.nerc.ac.uk/id/eprint/518359/1/Martos_et_al-2017-Geophysical_Research_Letters.pdf Martos, Yasmina M.; Catalan, Manuel; Jordan, Tom A. orcid:0000-0003-2780-1986 Golynsky, Alexander; Golynsky, Dmitry; Eagles, Graeme; Vaughan, David G. orcid:0000-0002-9065-0570 . 2017 Heat flux distribution of Antarctica unveiled. Geophysical Research Letters, 44 (22). 11,417-11,426. https://doi.org/10.1002/2017GL075609 <https://doi.org/10.1002/2017GL075609> |
op_doi |
https://doi.org/10.1002/2017GL075609 |
container_title |
Geophysical Research Letters |
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44 |
container_issue |
22 |
container_start_page |
11,417 |
op_container_end_page |
11,426 |
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1766251713494253568 |