A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum
A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, and to explore the forcing mechanisms responsible for ice sheet retreat. Such understanding can be derived from a broad...
Published in: | Quaternary Science Reviews |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2014
|
Subjects: | |
Online Access: | https://eprints.whiterose.ac.uk/80414/ https://eprints.whiterose.ac.uk/80414/1/RAISED_Consortium_2014_QSR.pdf https://doi.org/10.1016/j.quascirev.2014.06.025 |
id |
ftleedsuniv:oai:eprints.whiterose.ac.uk:80414 |
---|---|
record_format |
openpolar |
spelling |
ftleedsuniv:oai:eprints.whiterose.ac.uk:80414 2023-05-15T13:41:04+02:00 A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum Bentley, M.J. Cofaigh, C.O. Anderson, J.B. Conway, H. Davies, B. Graham, A.G.C. Hillenbrand, C-D. Hodgson, D.A. Jamieson, S.S.R. Larter, R.D. Mackintosh, A. Smith, J.A. Verleyen, E. Ackert, R.P. Bart, P.J. Berg, S. Brunstein, D. Canals, M. Colhoun, E.A. Crosta, X. Dickens, W.A. Domack, E. Dowdeswell, J.A. Dunbar, R. Ehrmann, W. Evans, J. Favier, V. Fink, D. Fogwill, C.J. Glasser, N.F. Gohl, K. Golledge, N.R. Goodwin, I. Gore, D.B. Greenwood, S.L. Hall, B.L. Hall, K. Hedding, D.W. Hein, A.S. Hocking, E.P. Jakobsson, M. Johnson, J.S. Jomelli, V. Jones, R.S. Klages, J.P. Kristoffersen, Y. Kuhn, G. Leventer, A. Licht, K. Lilly, K. 2014-09-15 text https://eprints.whiterose.ac.uk/80414/ https://eprints.whiterose.ac.uk/80414/1/RAISED_Consortium_2014_QSR.pdf https://doi.org/10.1016/j.quascirev.2014.06.025 en eng Elsevier https://eprints.whiterose.ac.uk/80414/1/RAISED_Consortium_2014_QSR.pdf Bentley, M.J., Cofaigh, C.O., Anderson, J.B. et al. (75 more authors) (2014) A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum. Quaternary Science Reviews, 100. 1 - 9. ISSN 0277-3791 Article PeerReviewed 2014 ftleedsuniv https://doi.org/10.1016/j.quascirev.2014.06.025 2023-01-30T21:28:37Z A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, and to explore the forcing mechanisms responsible for ice sheet retreat. Such understanding can be derived from a broad range of geological and glaciological datasets and recent decades have seen an upsurge in such data gathering around the continent and Sub-Antarctic islands. Here, we report a new synthesis of those datasets, based on an accompanying series of reviews of the geological data, organised by sector. We present a series of timeslice maps for 20 ka, 15 ka, 10 ka and 5 ka, including grounding line position and ice sheet thickness changes, along with a clear assessment of levels of confidence. The reconstruction shows that the Antarctic Ice sheet did not everywhere reach the continental shelf edge at its maximum, that initial retreat was asynchronous, and that the spatial pattern of deglaciation was highly variable, particularly on the inner shelf. The deglacial reconstruction is consistent with a moderate overall excess ice volume and with a relatively small Antarctic contribution to meltwater pulse 1a. We discuss key areas of uncertainty both around the continent and by time interval, and we highlight potential priorities for future work. The synthesis is intended to be a resource for the modelling and glacial geological community. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet White Rose Research Online (Universities of Leeds, Sheffield & York) Antarctic The Antarctic Quaternary Science Reviews 100 1 9 |
institution |
Open Polar |
collection |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
language |
English |
description |
A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, and to explore the forcing mechanisms responsible for ice sheet retreat. Such understanding can be derived from a broad range of geological and glaciological datasets and recent decades have seen an upsurge in such data gathering around the continent and Sub-Antarctic islands. Here, we report a new synthesis of those datasets, based on an accompanying series of reviews of the geological data, organised by sector. We present a series of timeslice maps for 20 ka, 15 ka, 10 ka and 5 ka, including grounding line position and ice sheet thickness changes, along with a clear assessment of levels of confidence. The reconstruction shows that the Antarctic Ice sheet did not everywhere reach the continental shelf edge at its maximum, that initial retreat was asynchronous, and that the spatial pattern of deglaciation was highly variable, particularly on the inner shelf. The deglacial reconstruction is consistent with a moderate overall excess ice volume and with a relatively small Antarctic contribution to meltwater pulse 1a. We discuss key areas of uncertainty both around the continent and by time interval, and we highlight potential priorities for future work. The synthesis is intended to be a resource for the modelling and glacial geological community. |
format |
Article in Journal/Newspaper |
author |
Bentley, M.J. Cofaigh, C.O. Anderson, J.B. Conway, H. Davies, B. Graham, A.G.C. Hillenbrand, C-D. Hodgson, D.A. Jamieson, S.S.R. Larter, R.D. Mackintosh, A. Smith, J.A. Verleyen, E. Ackert, R.P. Bart, P.J. Berg, S. Brunstein, D. Canals, M. Colhoun, E.A. Crosta, X. Dickens, W.A. Domack, E. Dowdeswell, J.A. Dunbar, R. Ehrmann, W. Evans, J. Favier, V. Fink, D. Fogwill, C.J. Glasser, N.F. Gohl, K. Golledge, N.R. Goodwin, I. Gore, D.B. Greenwood, S.L. Hall, B.L. Hall, K. Hedding, D.W. Hein, A.S. Hocking, E.P. Jakobsson, M. Johnson, J.S. Jomelli, V. Jones, R.S. Klages, J.P. Kristoffersen, Y. Kuhn, G. Leventer, A. Licht, K. Lilly, K. |
spellingShingle |
Bentley, M.J. Cofaigh, C.O. Anderson, J.B. Conway, H. Davies, B. Graham, A.G.C. Hillenbrand, C-D. Hodgson, D.A. Jamieson, S.S.R. Larter, R.D. Mackintosh, A. Smith, J.A. Verleyen, E. Ackert, R.P. Bart, P.J. Berg, S. Brunstein, D. Canals, M. Colhoun, E.A. Crosta, X. Dickens, W.A. Domack, E. Dowdeswell, J.A. Dunbar, R. Ehrmann, W. Evans, J. Favier, V. Fink, D. Fogwill, C.J. Glasser, N.F. Gohl, K. Golledge, N.R. Goodwin, I. Gore, D.B. Greenwood, S.L. Hall, B.L. Hall, K. Hedding, D.W. Hein, A.S. Hocking, E.P. Jakobsson, M. Johnson, J.S. Jomelli, V. Jones, R.S. Klages, J.P. Kristoffersen, Y. Kuhn, G. Leventer, A. Licht, K. Lilly, K. A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
author_facet |
Bentley, M.J. Cofaigh, C.O. Anderson, J.B. Conway, H. Davies, B. Graham, A.G.C. Hillenbrand, C-D. Hodgson, D.A. Jamieson, S.S.R. Larter, R.D. Mackintosh, A. Smith, J.A. Verleyen, E. Ackert, R.P. Bart, P.J. Berg, S. Brunstein, D. Canals, M. Colhoun, E.A. Crosta, X. Dickens, W.A. Domack, E. Dowdeswell, J.A. Dunbar, R. Ehrmann, W. Evans, J. Favier, V. Fink, D. Fogwill, C.J. Glasser, N.F. Gohl, K. Golledge, N.R. Goodwin, I. Gore, D.B. Greenwood, S.L. Hall, B.L. Hall, K. Hedding, D.W. Hein, A.S. Hocking, E.P. Jakobsson, M. Johnson, J.S. Jomelli, V. Jones, R.S. Klages, J.P. Kristoffersen, Y. Kuhn, G. Leventer, A. Licht, K. Lilly, K. |
author_sort |
Bentley, M.J. |
title |
A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
title_short |
A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
title_full |
A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
title_fullStr |
A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
title_full_unstemmed |
A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
title_sort |
community-based geological reconstruction of antarctic ice sheet deglaciation since the last glacial maximum |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://eprints.whiterose.ac.uk/80414/ https://eprints.whiterose.ac.uk/80414/1/RAISED_Consortium_2014_QSR.pdf https://doi.org/10.1016/j.quascirev.2014.06.025 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_relation |
https://eprints.whiterose.ac.uk/80414/1/RAISED_Consortium_2014_QSR.pdf Bentley, M.J., Cofaigh, C.O., Anderson, J.B. et al. (75 more authors) (2014) A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum. Quaternary Science Reviews, 100. 1 - 9. ISSN 0277-3791 |
op_doi |
https://doi.org/10.1016/j.quascirev.2014.06.025 |
container_title |
Quaternary Science Reviews |
container_volume |
100 |
container_start_page |
1 |
op_container_end_page |
9 |
_version_ |
1766145470798757888 |