Recent progress on combining geomorphological and geochronological data with ice sheet modelling, demonstrated using the last British–Irish Ice Sheet
ABSTRACT Palaeo‐ice sheets are important analogues for understanding contemporary ice sheets, offering a record of ice sheet behaviour that spans millennia. There are two main approaches to reconstructing palaeo‐ice sheets. Empirical reconstructions use the available glacial geological and chronolog...
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crwiley:10.1002/jqs.3098 2024-06-02T08:08:10+00:00 Recent progress on combining geomorphological and geochronological data with ice sheet modelling, demonstrated using the last British–Irish Ice Sheet Ely, Jeremy C. Clark, Chris D. Hindmarsh, Richard C. A. Hughes, Anna L. C. Greenwood, Sarah L. Bradley, Sarah L. Gasson, Edward Gregoire, Lauren Gandy, Niall Stokes, Chris R. Small, David 2019 http://dx.doi.org/10.1002/jqs.3098 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3098 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/jqs.3098 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 36, issue 5, page 946-960 ISSN 0267-8179 1099-1417 journal-article 2019 crwiley https://doi.org/10.1002/jqs.3098 2024-05-06T07:03:25Z ABSTRACT Palaeo‐ice sheets are important analogues for understanding contemporary ice sheets, offering a record of ice sheet behaviour that spans millennia. There are two main approaches to reconstructing palaeo‐ice sheets. Empirical reconstructions use the available glacial geological and chronological evidence to estimate ice sheet extent and dynamics but lack direct consideration of ice physics. In contrast, numerically modelled simulations implement ice physics, but often lack direct quantitative comparison with empirical evidence. Despite being long identified as a fruitful scientific endeavour, few ice sheet reconstructions attempt to reconcile the empirical and model‐based approaches. To achieve this goal, model‐data comparison procedures are required. Here, we compare three numerically modelled simulations of the former British–Irish Ice Sheet with the following lines of evidence: (a) position and shape of former margin positions, recorded by moraines; (b) former ice‐flow direction and flow‐switching, recorded by flowsets of subglacial bedforms; and (c) the timing of ice‐free conditions, recorded by geochronological data. These model–data comparisons provide a useful framework for quantifying the degree of fit between numerical model simulations and empirical constraints. Such tools are vital for reconciling numerical modelling and empirical evidence, the combination of which will lead to more robust palaeo‐ice sheet reconstructions with greater explicative and ultimately predictive power. Article in Journal/Newspaper Ice Sheet Wiley Online Library Endeavour ENVELOPE(162.000,162.000,-76.550,-76.550) Journal of Quaternary Science 36 5 946 960 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT Palaeo‐ice sheets are important analogues for understanding contemporary ice sheets, offering a record of ice sheet behaviour that spans millennia. There are two main approaches to reconstructing palaeo‐ice sheets. Empirical reconstructions use the available glacial geological and chronological evidence to estimate ice sheet extent and dynamics but lack direct consideration of ice physics. In contrast, numerically modelled simulations implement ice physics, but often lack direct quantitative comparison with empirical evidence. Despite being long identified as a fruitful scientific endeavour, few ice sheet reconstructions attempt to reconcile the empirical and model‐based approaches. To achieve this goal, model‐data comparison procedures are required. Here, we compare three numerically modelled simulations of the former British–Irish Ice Sheet with the following lines of evidence: (a) position and shape of former margin positions, recorded by moraines; (b) former ice‐flow direction and flow‐switching, recorded by flowsets of subglacial bedforms; and (c) the timing of ice‐free conditions, recorded by geochronological data. These model–data comparisons provide a useful framework for quantifying the degree of fit between numerical model simulations and empirical constraints. Such tools are vital for reconciling numerical modelling and empirical evidence, the combination of which will lead to more robust palaeo‐ice sheet reconstructions with greater explicative and ultimately predictive power. |
format |
Article in Journal/Newspaper |
author |
Ely, Jeremy C. Clark, Chris D. Hindmarsh, Richard C. A. Hughes, Anna L. C. Greenwood, Sarah L. Bradley, Sarah L. Gasson, Edward Gregoire, Lauren Gandy, Niall Stokes, Chris R. Small, David |
spellingShingle |
Ely, Jeremy C. Clark, Chris D. Hindmarsh, Richard C. A. Hughes, Anna L. C. Greenwood, Sarah L. Bradley, Sarah L. Gasson, Edward Gregoire, Lauren Gandy, Niall Stokes, Chris R. Small, David Recent progress on combining geomorphological and geochronological data with ice sheet modelling, demonstrated using the last British–Irish Ice Sheet |
author_facet |
Ely, Jeremy C. Clark, Chris D. Hindmarsh, Richard C. A. Hughes, Anna L. C. Greenwood, Sarah L. Bradley, Sarah L. Gasson, Edward Gregoire, Lauren Gandy, Niall Stokes, Chris R. Small, David |
author_sort |
Ely, Jeremy C. |
title |
Recent progress on combining geomorphological and geochronological data with ice sheet modelling, demonstrated using the last British–Irish Ice Sheet |
title_short |
Recent progress on combining geomorphological and geochronological data with ice sheet modelling, demonstrated using the last British–Irish Ice Sheet |
title_full |
Recent progress on combining geomorphological and geochronological data with ice sheet modelling, demonstrated using the last British–Irish Ice Sheet |
title_fullStr |
Recent progress on combining geomorphological and geochronological data with ice sheet modelling, demonstrated using the last British–Irish Ice Sheet |
title_full_unstemmed |
Recent progress on combining geomorphological and geochronological data with ice sheet modelling, demonstrated using the last British–Irish Ice Sheet |
title_sort |
recent progress on combining geomorphological and geochronological data with ice sheet modelling, demonstrated using the last british–irish ice sheet |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/jqs.3098 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3098 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/jqs.3098 |
long_lat |
ENVELOPE(162.000,162.000,-76.550,-76.550) |
geographic |
Endeavour |
geographic_facet |
Endeavour |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Journal of Quaternary Science volume 36, issue 5, page 946-960 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.3098 |
container_title |
Journal of Quaternary Science |
container_volume |
36 |
container_issue |
5 |
container_start_page |
946 |
op_container_end_page |
960 |
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1800753358206664704 |