Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes
The Antarctic Ice Sheet is underlain by numerous subglacial lakes, which comprise a significant and active component of its hydrological network. These lakes are widespread and occur at a range of scales under a variety of conditions. At present much glaciological research is concerned with the role...
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ftuniaarhuspubl:oai:pure.atira.dk:publications/5dfc5b86-7257-44f8-96fb-11fe04fccc73 2024-01-14T10:00:12+01:00 Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes Livingstone, Stephen J. Clark, Chris Piotrowski, Jan A. Tranter, Martyn Bentley, Michael J. Hodson, Andy Swift, Darrel A. Woodward, John 2012 https://pure.au.dk/portal/en/publications/5dfc5b86-7257-44f8-96fb-11fe04fccc73 https://doi.org/10.1016/j.quascirev.2012.08.010 eng eng https://pure.au.dk/portal/en/publications/5dfc5b86-7257-44f8-96fb-11fe04fccc73 info:eu-repo/semantics/restrictedAccess Livingstone , S J , Clark , C , Piotrowski , J A , Tranter , M , Bentley , M J , Hodson , A , Swift , D A & Woodward , J 2012 , ' Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes ' , Quaternary Science Reviews , vol. 53 , no. C , pp. 88-110 . https://doi.org/10.1016/j.quascirev.2012.08.010 Ice sheet Palaeo-subglacial lake Subglacial geomorphology Subglacial hydrology Subglacial lake Subglacial sedimentology article 2012 ftuniaarhuspubl https://doi.org/10.1016/j.quascirev.2012.08.010 2023-12-20T23:58:57Z The Antarctic Ice Sheet is underlain by numerous subglacial lakes, which comprise a significant and active component of its hydrological network. These lakes are widespread and occur at a range of scales under a variety of conditions. At present much glaciological research is concerned with the role of modern subglacial lake systems in Antarctica. Another approach to the exploration of subglacial lakes involves identification of the geological record of subglacial lakes that once existed beneath former ice sheets. This is challenging, both conceptually, in identifying whether and where subglacial lakes may have formed, and also distinguishing the signature of former subglacial lakes in the geological record. In this work we provide a synthesis of subglacial lake types that have been identified or may theoretically exist beneath contemporary or palaeo-ice sheets. This includes a discussion of the formative mechanisms that could trigger onset of (or drain) subglacial lakes. These concepts provide a framework for discussing the probability that subglacial lakes exist(ed) beneath other (palaeo-)ice sheets. Indeed we conclude that the former mid-latitude ice sheets are likely to have hosted subglacial lakes, although the spatial distribution, frequency and type of lakes may have differed from today's ice sheets and between palaeo-ice sheets. Given this possibility, we propose diagnostic criteria for identifying palaeo-subglacial lakes in the geological record. These criteria are derived from contemporary observations, hydrological theory and process-analogues and provide an observational template for detailed field investigations. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Aarhus University: Research Antarctic The Antarctic Quaternary Science Reviews 53 88 110 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Ice sheet Palaeo-subglacial lake Subglacial geomorphology Subglacial hydrology Subglacial lake Subglacial sedimentology |
spellingShingle |
Ice sheet Palaeo-subglacial lake Subglacial geomorphology Subglacial hydrology Subglacial lake Subglacial sedimentology Livingstone, Stephen J. Clark, Chris Piotrowski, Jan A. Tranter, Martyn Bentley, Michael J. Hodson, Andy Swift, Darrel A. Woodward, John Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes |
topic_facet |
Ice sheet Palaeo-subglacial lake Subglacial geomorphology Subglacial hydrology Subglacial lake Subglacial sedimentology |
description |
The Antarctic Ice Sheet is underlain by numerous subglacial lakes, which comprise a significant and active component of its hydrological network. These lakes are widespread and occur at a range of scales under a variety of conditions. At present much glaciological research is concerned with the role of modern subglacial lake systems in Antarctica. Another approach to the exploration of subglacial lakes involves identification of the geological record of subglacial lakes that once existed beneath former ice sheets. This is challenging, both conceptually, in identifying whether and where subglacial lakes may have formed, and also distinguishing the signature of former subglacial lakes in the geological record. In this work we provide a synthesis of subglacial lake types that have been identified or may theoretically exist beneath contemporary or palaeo-ice sheets. This includes a discussion of the formative mechanisms that could trigger onset of (or drain) subglacial lakes. These concepts provide a framework for discussing the probability that subglacial lakes exist(ed) beneath other (palaeo-)ice sheets. Indeed we conclude that the former mid-latitude ice sheets are likely to have hosted subglacial lakes, although the spatial distribution, frequency and type of lakes may have differed from today's ice sheets and between palaeo-ice sheets. Given this possibility, we propose diagnostic criteria for identifying palaeo-subglacial lakes in the geological record. These criteria are derived from contemporary observations, hydrological theory and process-analogues and provide an observational template for detailed field investigations. |
format |
Article in Journal/Newspaper |
author |
Livingstone, Stephen J. Clark, Chris Piotrowski, Jan A. Tranter, Martyn Bentley, Michael J. Hodson, Andy Swift, Darrel A. Woodward, John |
author_facet |
Livingstone, Stephen J. Clark, Chris Piotrowski, Jan A. Tranter, Martyn Bentley, Michael J. Hodson, Andy Swift, Darrel A. Woodward, John |
author_sort |
Livingstone, Stephen J. |
title |
Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes |
title_short |
Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes |
title_full |
Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes |
title_fullStr |
Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes |
title_full_unstemmed |
Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes |
title_sort |
theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes |
publishDate |
2012 |
url |
https://pure.au.dk/portal/en/publications/5dfc5b86-7257-44f8-96fb-11fe04fccc73 https://doi.org/10.1016/j.quascirev.2012.08.010 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_source |
Livingstone , S J , Clark , C , Piotrowski , J A , Tranter , M , Bentley , M J , Hodson , A , Swift , D A & Woodward , J 2012 , ' Theoretical framework and diagnostic criteria for the identification of palaeo-subglacial lakes ' , Quaternary Science Reviews , vol. 53 , no. C , pp. 88-110 . https://doi.org/10.1016/j.quascirev.2012.08.010 |
op_relation |
https://pure.au.dk/portal/en/publications/5dfc5b86-7257-44f8-96fb-11fe04fccc73 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2012.08.010 |
container_title |
Quaternary Science Reviews |
container_volume |
53 |
container_start_page |
88 |
op_container_end_page |
110 |
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1788064146243190784 |