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: | unknown |
Published: |
Digital Commons @ University of South Florida
2014
|
Subjects: | |
Online Access: | https://digitalcommons.usf.edu/msc_facpub/1558 https://doi.org/10.1016/j.quascirev.2014.06.025 |
id |
ftusouthflorida:oai:digitalcommons.usf.edu:msc_facpub-2552 |
---|---|
record_format |
openpolar |
spelling |
ftusouthflorida:oai:digitalcommons.usf.edu:msc_facpub-2552 2023-07-30T03:58:37+02:00 A Community-based Geological Reconstruction of Antarctic Ice Sheet Deglaciation since the Last Glacial Maximum The RAISED Consortium Bentley, Michael J. Ó Cofaigh, Colm Anderson, John B. Conway, Howard Davies, Bethan Graham, Alastair G.C. Hillenbrand, Claus-Dieter Hodgson, Dominic A. Jamieson, Stewart S.R. Larter, Robert D. Mackintosh, Andrew Smith, James A. Verleyen, Elie Ackert, Robert P. Bart, Philip J. Berg, Sonja Brunstein, Daniel Canals, Miquel Colhoun, Eric A. Crosta, Xavier Dickens, William A. Domack, Eugene Dowdeswell, Julian A. Dunbar, Robert Ehrmann, Werner Evans, Jeffrey Favier, Vincent Fink, David Fogwill, Christopher J. Glasser, Neil F. Gohl, Karsten Golledge, Nicholas R. Goodwin, Ian Gore, Damian B. Greenwood, Sarah L. Hall, Brenda L. Hall, Kevin Hedding, David W. Hein, Andrew S. Hocking, Emma P. Jakobsson, Martin Johnson, Joanne S. Jomelli, Vincent Jones, R. Selwyn Klages, Johann P. Kristoffersen, Yngve Kuhn, Gerhard Leventer, Amy Licht, Kathy Lilly, Katherine Lindow, Julia Livingstone, Stephen J. Massé, Guillaume McGlone, Matt S. McKay, Robert M. Melles, Martin Miura, Hideki Mulvaney, Robert Nel, Werner Nitsche, Frank O. O'Brien, Philip E. Post, Alexandra L. Roberts, Stephen J. Saunders, Krystyna M. Selkirk, Patricia M. Simms, Alexander R. Spiegel, Cornelia Stolldorf, Travis D. Sugden, David E. van der Putten, Nathalie van Ommen, Tas Verfaillie, Deborah Vyverman, Wim Wagner, Bernd White, Duanne A. Witus, Alexandra E. Zwartz, Dan 2014-01-01T08:00:00Z https://digitalcommons.usf.edu/msc_facpub/1558 https://doi.org/10.1016/j.quascirev.2014.06.025 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/1558 doi:10.1016/j.quascirev.2014.06.025 https://doi.org/10.1016/j.quascirev.2014.06.025 Marine Science Faculty Publications Antarctic Ice Sheet Glacial geology Modelling Quaternary Life Sciences article 2014 ftusouthflorida https://doi.org/10.1016/j.quascirev.2014.06.025 2023-07-13T21:02:55Z 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 University of South Florida St. Petersburg: Digital USFSP Antarctic The Antarctic Quaternary Science Reviews 100 1 9 |
institution |
Open Polar |
collection |
University of South Florida St. Petersburg: Digital USFSP |
op_collection_id |
ftusouthflorida |
language |
unknown |
topic |
Antarctic Ice Sheet Glacial geology Modelling Quaternary Life Sciences |
spellingShingle |
Antarctic Ice Sheet Glacial geology Modelling Quaternary Life Sciences The RAISED Consortium Bentley, Michael J. Ó Cofaigh, Colm Anderson, John B. Conway, Howard Davies, Bethan Graham, Alastair G.C. Hillenbrand, Claus-Dieter Hodgson, Dominic A. Jamieson, Stewart S.R. Larter, Robert D. Mackintosh, Andrew Smith, James A. Verleyen, Elie Ackert, Robert P. Bart, Philip J. Berg, Sonja Brunstein, Daniel Canals, Miquel Colhoun, Eric A. Crosta, Xavier Dickens, William A. Domack, Eugene Dowdeswell, Julian A. Dunbar, Robert Ehrmann, Werner Evans, Jeffrey Favier, Vincent Fink, David Fogwill, Christopher J. Glasser, Neil F. Gohl, Karsten Golledge, Nicholas R. Goodwin, Ian Gore, Damian B. Greenwood, Sarah L. Hall, Brenda L. Hall, Kevin Hedding, David W. Hein, Andrew S. Hocking, Emma P. Jakobsson, Martin Johnson, Joanne S. Jomelli, Vincent Jones, R. Selwyn Klages, Johann P. Kristoffersen, Yngve Kuhn, Gerhard Leventer, Amy Licht, Kathy Lilly, Katherine Lindow, Julia Livingstone, Stephen J. Massé, Guillaume McGlone, Matt S. McKay, Robert M. Melles, Martin Miura, Hideki Mulvaney, Robert Nel, Werner Nitsche, Frank O. O'Brien, Philip E. Post, Alexandra L. Roberts, Stephen J. Saunders, Krystyna M. Selkirk, Patricia M. Simms, Alexander R. Spiegel, Cornelia Stolldorf, Travis D. Sugden, David E. van der Putten, Nathalie van Ommen, Tas Verfaillie, Deborah Vyverman, Wim Wagner, Bernd White, Duanne A. Witus, Alexandra E. Zwartz, Dan A Community-based Geological Reconstruction of Antarctic Ice Sheet Deglaciation since the Last Glacial Maximum |
topic_facet |
Antarctic Ice Sheet Glacial geology Modelling Quaternary Life Sciences |
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 |
The RAISED Consortium Bentley, Michael J. Ó Cofaigh, Colm Anderson, John B. Conway, Howard Davies, Bethan Graham, Alastair G.C. Hillenbrand, Claus-Dieter Hodgson, Dominic A. Jamieson, Stewart S.R. Larter, Robert D. Mackintosh, Andrew Smith, James A. Verleyen, Elie Ackert, Robert P. Bart, Philip J. Berg, Sonja Brunstein, Daniel Canals, Miquel Colhoun, Eric A. Crosta, Xavier Dickens, William A. Domack, Eugene Dowdeswell, Julian A. Dunbar, Robert Ehrmann, Werner Evans, Jeffrey Favier, Vincent Fink, David Fogwill, Christopher J. Glasser, Neil F. Gohl, Karsten Golledge, Nicholas R. Goodwin, Ian Gore, Damian B. Greenwood, Sarah L. Hall, Brenda L. Hall, Kevin Hedding, David W. Hein, Andrew S. Hocking, Emma P. Jakobsson, Martin Johnson, Joanne S. Jomelli, Vincent Jones, R. Selwyn Klages, Johann P. Kristoffersen, Yngve Kuhn, Gerhard Leventer, Amy Licht, Kathy Lilly, Katherine Lindow, Julia Livingstone, Stephen J. Massé, Guillaume McGlone, Matt S. McKay, Robert M. Melles, Martin Miura, Hideki Mulvaney, Robert Nel, Werner Nitsche, Frank O. O'Brien, Philip E. Post, Alexandra L. Roberts, Stephen J. Saunders, Krystyna M. Selkirk, Patricia M. Simms, Alexander R. Spiegel, Cornelia Stolldorf, Travis D. Sugden, David E. van der Putten, Nathalie van Ommen, Tas Verfaillie, Deborah Vyverman, Wim Wagner, Bernd White, Duanne A. Witus, Alexandra E. Zwartz, Dan |
author_facet |
The RAISED Consortium Bentley, Michael J. Ó Cofaigh, Colm Anderson, John B. Conway, Howard Davies, Bethan Graham, Alastair G.C. Hillenbrand, Claus-Dieter Hodgson, Dominic A. Jamieson, Stewart S.R. Larter, Robert D. Mackintosh, Andrew Smith, James A. Verleyen, Elie Ackert, Robert P. Bart, Philip J. Berg, Sonja Brunstein, Daniel Canals, Miquel Colhoun, Eric A. Crosta, Xavier Dickens, William A. Domack, Eugene Dowdeswell, Julian A. Dunbar, Robert Ehrmann, Werner Evans, Jeffrey Favier, Vincent Fink, David Fogwill, Christopher J. Glasser, Neil F. Gohl, Karsten Golledge, Nicholas R. Goodwin, Ian Gore, Damian B. Greenwood, Sarah L. Hall, Brenda L. Hall, Kevin Hedding, David W. Hein, Andrew S. Hocking, Emma P. Jakobsson, Martin Johnson, Joanne S. Jomelli, Vincent Jones, R. Selwyn Klages, Johann P. Kristoffersen, Yngve Kuhn, Gerhard Leventer, Amy Licht, Kathy Lilly, Katherine Lindow, Julia Livingstone, Stephen J. Massé, Guillaume McGlone, Matt S. McKay, Robert M. Melles, Martin Miura, Hideki Mulvaney, Robert Nel, Werner Nitsche, Frank O. O'Brien, Philip E. Post, Alexandra L. Roberts, Stephen J. Saunders, Krystyna M. Selkirk, Patricia M. Simms, Alexander R. Spiegel, Cornelia Stolldorf, Travis D. Sugden, David E. van der Putten, Nathalie van Ommen, Tas Verfaillie, Deborah Vyverman, Wim Wagner, Bernd White, Duanne A. Witus, Alexandra E. Zwartz, Dan |
author_sort |
The RAISED Consortium |
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 |
Digital Commons @ University of South Florida |
publishDate |
2014 |
url |
https://digitalcommons.usf.edu/msc_facpub/1558 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_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/1558 doi:10.1016/j.quascirev.2014.06.025 https://doi.org/10.1016/j.quascirev.2014.06.025 |
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_ |
1772821381311889408 |