Antarctic palaeotopography
The development of a robust understanding of the response of the Antarctic Ice Sheet to present and projected future climatic change is a matter of key global societal importance. Numerical ice sheet models that simulate future ice sheet behaviour are typically evaluated with recourse to how well th...
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Online Access: | http://dro.dur.ac.uk/36399/ http://dro.dur.ac.uk/36399/1/36399.pdf https://doi.org/10.1144/M56-2020-7 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:36399 2023-05-15T13:37:59+02:00 Antarctic palaeotopography Paxman, Guy J. G. 2021 application/pdf http://dro.dur.ac.uk/36399/ http://dro.dur.ac.uk/36399/1/36399.pdf https://doi.org/10.1144/M56-2020-7 unknown Geological Society of London dro:36399 issn:0435-4052 issn: 2041-4722 doi:10.1144/M56-2020-7 http://dro.dur.ac.uk/36399/ https://doi.org/10.1144/M56-2020-7 http://dro.dur.ac.uk/36399/1/36399.pdf © 2021 The Author(s). Published by The Geological Society of London http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/). CC-BY Geological Society, London, Memoirs, 2021, Vol.56 [Peer Reviewed Journal] Article PeerReviewed 2021 ftunivdurham https://doi.org/10.1144/M56-2020-7 2022-07-07T22:25:17Z The development of a robust understanding of the response of the Antarctic Ice Sheet to present and projected future climatic change is a matter of key global societal importance. Numerical ice sheet models that simulate future ice sheet behaviour are typically evaluated with recourse to how well they reproduce past ice sheet behaviour, which is constrained by the geological record. However, subglacial topography, a key boundary condition in ice sheet models, has evolved significantly throughout Antarctica's glacial history. Since mantle processes play a fundamental role in the generation and modification of topography over geological timescales, an understanding of the interactions between the Antarctic mantle and palaeotopography is crucial for developing more accurate simulations of past ice sheet dynamics. This chapter provides a review of the influence of the Antarctic mantle on the long-term evolution of the subglacial landscape, through processes including structural inheritance, flexural isostatic adjustment, lithospheric cooling and thermal subsidence, volcanism and dynamic topography. The uncertainties associated with reconstructing these processes through time are discussed, as are important directions for future research and the implications of the evolving subglacial topography for the response of the Antarctic Ice Sheet to climatic and oceanographic change. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Durham University: Durham Research Online Antarctic The Antarctic Geological Society, London, Memoirs 56 1 |
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Durham University: Durham Research Online |
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ftunivdurham |
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The development of a robust understanding of the response of the Antarctic Ice Sheet to present and projected future climatic change is a matter of key global societal importance. Numerical ice sheet models that simulate future ice sheet behaviour are typically evaluated with recourse to how well they reproduce past ice sheet behaviour, which is constrained by the geological record. However, subglacial topography, a key boundary condition in ice sheet models, has evolved significantly throughout Antarctica's glacial history. Since mantle processes play a fundamental role in the generation and modification of topography over geological timescales, an understanding of the interactions between the Antarctic mantle and palaeotopography is crucial for developing more accurate simulations of past ice sheet dynamics. This chapter provides a review of the influence of the Antarctic mantle on the long-term evolution of the subglacial landscape, through processes including structural inheritance, flexural isostatic adjustment, lithospheric cooling and thermal subsidence, volcanism and dynamic topography. The uncertainties associated with reconstructing these processes through time are discussed, as are important directions for future research and the implications of the evolving subglacial topography for the response of the Antarctic Ice Sheet to climatic and oceanographic change. |
format |
Article in Journal/Newspaper |
author |
Paxman, Guy J. G. |
spellingShingle |
Paxman, Guy J. G. Antarctic palaeotopography |
author_facet |
Paxman, Guy J. G. |
author_sort |
Paxman, Guy J. G. |
title |
Antarctic palaeotopography |
title_short |
Antarctic palaeotopography |
title_full |
Antarctic palaeotopography |
title_fullStr |
Antarctic palaeotopography |
title_full_unstemmed |
Antarctic palaeotopography |
title_sort |
antarctic palaeotopography |
publisher |
Geological Society of London |
publishDate |
2021 |
url |
http://dro.dur.ac.uk/36399/ http://dro.dur.ac.uk/36399/1/36399.pdf https://doi.org/10.1144/M56-2020-7 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
Geological Society, London, Memoirs, 2021, Vol.56 [Peer Reviewed Journal] |
op_relation |
dro:36399 issn:0435-4052 issn: 2041-4722 doi:10.1144/M56-2020-7 http://dro.dur.ac.uk/36399/ https://doi.org/10.1144/M56-2020-7 http://dro.dur.ac.uk/36399/1/36399.pdf |
op_rights |
© 2021 The Author(s). Published by The Geological Society of London http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1144/M56-2020-7 |
container_title |
Geological Society, London, Memoirs |
container_volume |
56 |
container_issue |
1 |
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1766100330089545728 |