Formalising an inversion methodology for reconstructing ice‐sheet retreat patterns from meltwater channels: application to the British Ice Sheet
Abstract Glacial meltwater channels yield important information regarding patterns of palaeo‐ice‐sheet retreat. However, it is important to distinguish between channels formed at different positions in relation to the ice mass (e.g. lateral, subglacial). In Britain, whilst meltwater channels have be...
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crwiley:10.1002/jqs.1083 2024-06-23T07:53:45+00:00 Formalising an inversion methodology for reconstructing ice‐sheet retreat patterns from meltwater channels: application to the British Ice Sheet Greenwood, Sarah L. Clark, Chris D. Hughes, Anna L. C. 2007 http://dx.doi.org/10.1002/jqs.1083 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1083 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1083 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 22, issue 6, page 637-645 ISSN 0267-8179 1099-1417 journal-article 2007 crwiley https://doi.org/10.1002/jqs.1083 2024-06-04T06:36:52Z Abstract Glacial meltwater channels yield important information regarding patterns of palaeo‐ice‐sheet retreat. However, it is important to distinguish between channels formed at different positions in relation to the ice mass (e.g. lateral, subglacial). In Britain, whilst meltwater channels have been widely reported in the literature, such categorisation is often lacking. Here we develop an inversion methodology for extracting ice margin retreat patterns from meltwater channels. Diagnostic geomorphological criteria are presented, derived from published descriptions of meltwater channel form, by which a channel of unknown origin may be assigned to its appropriate category. These criteria are applied to channels recorded in the BRITICE GIS database of glacial landforms and we find most channels to be of lateral or subglacial origin. The categorisation of channels enables palaeomargin positions and the direction of retreat‐stage ice flow to be approximated, and a preliminary reconstruction is made of fragments of the ice‐sheet retreat pattern. Further mapping and integration of melt traces with other geomorphic data will permit a more complete palaeo‐glaciological reconstruction of the last British Ice Sheet. Copyright © 2007 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice Sheet Wiley Online Library Journal of Quaternary Science 22 6 637 645 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Glacial meltwater channels yield important information regarding patterns of palaeo‐ice‐sheet retreat. However, it is important to distinguish between channels formed at different positions in relation to the ice mass (e.g. lateral, subglacial). In Britain, whilst meltwater channels have been widely reported in the literature, such categorisation is often lacking. Here we develop an inversion methodology for extracting ice margin retreat patterns from meltwater channels. Diagnostic geomorphological criteria are presented, derived from published descriptions of meltwater channel form, by which a channel of unknown origin may be assigned to its appropriate category. These criteria are applied to channels recorded in the BRITICE GIS database of glacial landforms and we find most channels to be of lateral or subglacial origin. The categorisation of channels enables palaeomargin positions and the direction of retreat‐stage ice flow to be approximated, and a preliminary reconstruction is made of fragments of the ice‐sheet retreat pattern. Further mapping and integration of melt traces with other geomorphic data will permit a more complete palaeo‐glaciological reconstruction of the last British Ice Sheet. Copyright © 2007 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Greenwood, Sarah L. Clark, Chris D. Hughes, Anna L. C. |
spellingShingle |
Greenwood, Sarah L. Clark, Chris D. Hughes, Anna L. C. Formalising an inversion methodology for reconstructing ice‐sheet retreat patterns from meltwater channels: application to the British Ice Sheet |
author_facet |
Greenwood, Sarah L. Clark, Chris D. Hughes, Anna L. C. |
author_sort |
Greenwood, Sarah L. |
title |
Formalising an inversion methodology for reconstructing ice‐sheet retreat patterns from meltwater channels: application to the British Ice Sheet |
title_short |
Formalising an inversion methodology for reconstructing ice‐sheet retreat patterns from meltwater channels: application to the British Ice Sheet |
title_full |
Formalising an inversion methodology for reconstructing ice‐sheet retreat patterns from meltwater channels: application to the British Ice Sheet |
title_fullStr |
Formalising an inversion methodology for reconstructing ice‐sheet retreat patterns from meltwater channels: application to the British Ice Sheet |
title_full_unstemmed |
Formalising an inversion methodology for reconstructing ice‐sheet retreat patterns from meltwater channels: application to the British Ice Sheet |
title_sort |
formalising an inversion methodology for reconstructing ice‐sheet retreat patterns from meltwater channels: application to the british ice sheet |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1002/jqs.1083 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1083 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1083 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Journal of Quaternary Science volume 22, issue 6, page 637-645 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.1083 |
container_title |
Journal of Quaternary Science |
container_volume |
22 |
container_issue |
6 |
container_start_page |
637 |
op_container_end_page |
645 |
_version_ |
1802645555541704704 |