A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum

Michael Bentley, Colm Cofaigh, John Anderson, Howard Conway, Bethan Davies, Alastair G C Graham, Claus Dieter Hillenbrand, Dominic Hodgson, Stewart Jamieson, Robert Larter, Andrew Mackintosh, James A. Smith, Elie Verleyen, Robert P. Ackert, Philip Bart, Sonja Berg, Daniel Brunstein, Miquel Canals, Eric Colhoun, Xavier Crosta & 57 others William Dickens, Eugene Domack, Julian Dowdeswell, Robert Dunbar, Werner Ehrmann, Jeffrey Evans, Vincent Favier, David Fink, Christopher J. Fogwill, Neil Glasser, Karsten Gohl, Nicholas R. Golledge, Ian Goodwin, Damian B. Gore, Sarah Greenwood, Brenda L. Hall, Kevin Hall, David Hedding, Andrew Hein, Emma Hocking, Martin Jakobsson, Joanne Johnson, Vincent Jomelli, R. Selwyn Jones, Johann Klages, Yngve Kristoffersen, Gerhard Kuhn, Amy Leventer, Kathy Licht, Katherine Lilly, Julia Lindow, Stephen Livingstone, Guillaume Masse, Matt McGlone, Robert M. McKay, Martin Melles, Hideki Miura, Robert Mulvaney, Werner Nel, Frank Nitsche, Philip E. O'Brien, Alexandra L. Post, Stephen J. Roberts, Krystyna Saunders, Patricia Selkirk, Alexander Simms, Cornelia Spiegel, Travis Stolldorf, David Sugden, Nathalie van der Putten, Tas van Ommen, Deborah Verfaillie, Wim Vyverman, Bernd Wagner, Duanne WHITE, Alexandra Witus, Dan Zwartz

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    Abstract

    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 20ka, 15ka, 10ka and 5ka, 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 priorit.

    Original languageEnglish
    Pages (from-to)1-9
    Number of pages9
    JournalQuaternary Science Reviews
    Volume100
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    deglaciation
    Last Glacial Maximum
    ice sheet
    reconstruction
    ice
    community
    confidence
    uncertainty
    grounding line
    history
    shelf break
    meltwater
    snowmelt
    continental shelf
    Retreat
    synthesis
    time
    Confidence
    Uncertainty
    Continental

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    Bentley, Michael ; Cofaigh, Colm ; Anderson, John ; Conway, Howard ; Davies, Bethan ; Graham, Alastair G C ; Hillenbrand, Claus Dieter ; Hodgson, Dominic ; Jamieson, Stewart ; Larter, Robert ; Mackintosh, Andrew ; Smith, James A. ; Verleyen, Elie ; Ackert, Robert P. ; Bart, Philip ; Berg, Sonja ; Brunstein, Daniel ; Canals, Miquel ; Colhoun, Eric ; Crosta, Xavier ; Dickens, William ; Domack, Eugene ; Dowdeswell, Julian ; Dunbar, Robert ; Ehrmann, Werner ; Evans, Jeffrey ; Favier, Vincent ; Fink, David ; Fogwill, Christopher J. ; Glasser, Neil ; Gohl, Karsten ; Golledge, Nicholas R. ; Goodwin, Ian ; Gore, Damian B. ; Greenwood, Sarah ; Hall, Brenda L. ; Hall, Kevin ; Hedding, David ; Hein, Andrew ; Hocking, Emma ; Jakobsson, Martin ; Johnson, Joanne ; Jomelli, Vincent ; Jones, R. Selwyn ; Klages, Johann ; Kristoffersen, Yngve ; Kuhn, Gerhard ; Leventer, Amy ; Licht, Kathy ; Lilly, Katherine ; Lindow, Julia ; Livingstone, Stephen ; Masse, Guillaume ; McGlone, Matt ; McKay, Robert M. ; Melles, Martin ; Miura, Hideki ; Mulvaney, Robert ; Nel, Werner ; Nitsche, Frank ; O'Brien, Philip E. ; Post, Alexandra L. ; Roberts, Stephen J. ; Saunders, Krystyna ; Selkirk, Patricia ; Simms, Alexander ; Spiegel, Cornelia ; Stolldorf, Travis ; Sugden, David ; van der Putten, Nathalie ; van Ommen, Tas ; Verfaillie, Deborah ; Vyverman, Wim ; Wagner, Bernd ; WHITE, Duanne ; Witus, Alexandra ; Zwartz, Dan. / A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum. In: Quaternary Science Reviews. 2014 ; Vol. 100. pp. 1-9.
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    abstract = "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 20ka, 15ka, 10ka and 5ka, 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 priorit.",
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    author = "Michael Bentley and Colm Cofaigh and John Anderson and Howard Conway and Bethan Davies and Graham, {Alastair G C} and Hillenbrand, {Claus Dieter} and Dominic Hodgson and Stewart Jamieson and Robert Larter and Andrew Mackintosh and Smith, {James A.} and Elie Verleyen and Ackert, {Robert P.} and Philip Bart and Sonja Berg and Daniel Brunstein and Miquel Canals and Eric Colhoun and Xavier Crosta and William Dickens and Eugene Domack and Julian Dowdeswell and Robert Dunbar and Werner Ehrmann and Jeffrey Evans and Vincent Favier and David Fink and Fogwill, {Christopher J.} and Neil Glasser and Karsten Gohl and Golledge, {Nicholas R.} and Ian Goodwin and Gore, {Damian B.} and Sarah Greenwood and Hall, {Brenda L.} and Kevin Hall and David Hedding and Andrew Hein and Emma Hocking and Martin Jakobsson and Joanne Johnson and Vincent Jomelli and Jones, {R. Selwyn} and Johann Klages and Yngve Kristoffersen and Gerhard Kuhn and Amy Leventer and Kathy Licht and Katherine Lilly and Julia Lindow and Stephen Livingstone and Guillaume Masse and Matt McGlone and McKay, {Robert M.} and Martin Melles and Hideki Miura and Robert Mulvaney and Werner Nel and Frank Nitsche and O'Brien, {Philip E.} and Post, {Alexandra L.} and Roberts, {Stephen J.} and Krystyna Saunders and Patricia Selkirk and Alexander Simms and Cornelia Spiegel and Travis Stolldorf and David Sugden and {van der Putten}, Nathalie and {van Ommen}, Tas and Deborah Verfaillie and Wim Vyverman and Bernd Wagner and Duanne WHITE and Alexandra Witus and Dan Zwartz",
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    Bentley, M, Cofaigh, C, Anderson, J, Conway, H, Davies, B, Graham, AGC, Hillenbrand, CD, Hodgson, D, Jamieson, S, Larter, R, Mackintosh, A, Smith, JA, Verleyen, E, Ackert, RP, Bart, P, Berg, S, Brunstein, D, Canals, M, Colhoun, E, Crosta, X, Dickens, W, Domack, E, Dowdeswell, J, Dunbar, R, Ehrmann, W, Evans, J, Favier, V, Fink, D, Fogwill, CJ, Glasser, N, Gohl, K, Golledge, NR, Goodwin, I, Gore, DB, Greenwood, S, Hall, BL, Hall, K, Hedding, D, Hein, A, Hocking, E, Jakobsson, M, Johnson, J, Jomelli, V, Jones, RS, Klages, J, Kristoffersen, Y, Kuhn, G, Leventer, A, Licht, K, Lilly, K, Lindow, J, Livingstone, S, Masse, G, McGlone, M, McKay, RM, Melles, M, Miura, H, Mulvaney, R, Nel, W, Nitsche, F, O'Brien, PE, Post, AL, Roberts, SJ, Saunders, K, Selkirk, P, Simms, A, Spiegel, C, Stolldorf, T, Sugden, D, van der Putten, N, van Ommen, T, Verfaillie, D, Vyverman, W, Wagner, B, WHITE, D, Witus, A & Zwartz, D 2014, 'A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum', Quaternary Science Reviews, vol. 100, pp. 1-9. https://doi.org/10.1016/j.quascirev.2014.06.025

    A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum. / Bentley, Michael; Cofaigh, Colm; Anderson, John; Conway, Howard; Davies, Bethan; Graham, Alastair G C; Hillenbrand, Claus Dieter; Hodgson, Dominic; Jamieson, Stewart; Larter, Robert; Mackintosh, Andrew; Smith, James A.; Verleyen, Elie; Ackert, Robert P.; Bart, Philip; Berg, Sonja; Brunstein, Daniel; Canals, Miquel; Colhoun, Eric; Crosta, Xavier; Dickens, William; Domack, Eugene; Dowdeswell, Julian; Dunbar, Robert; Ehrmann, Werner; Evans, Jeffrey; Favier, Vincent; Fink, David; Fogwill, Christopher J.; Glasser, Neil; Gohl, Karsten; Golledge, Nicholas R.; Goodwin, Ian; Gore, Damian B.; Greenwood, Sarah; Hall, Brenda L.; Hall, Kevin; Hedding, David; Hein, Andrew; Hocking, Emma; Jakobsson, Martin; Johnson, Joanne; Jomelli, Vincent; Jones, R. Selwyn; Klages, Johann; Kristoffersen, Yngve; Kuhn, Gerhard; Leventer, Amy; Licht, Kathy; Lilly, Katherine; Lindow, Julia; Livingstone, Stephen; Masse, Guillaume; McGlone, Matt; McKay, Robert M.; Melles, Martin; Miura, Hideki; Mulvaney, Robert; Nel, Werner; Nitsche, Frank; O'Brien, Philip E.; Post, Alexandra L.; Roberts, Stephen J.; Saunders, Krystyna; Selkirk, Patricia; Simms, Alexander; Spiegel, Cornelia; Stolldorf, Travis; Sugden, David; van der Putten, Nathalie; van Ommen, Tas; Verfaillie, Deborah; Vyverman, Wim; Wagner, Bernd; WHITE, Duanne; Witus, Alexandra; Zwartz, Dan.

    In: Quaternary Science Reviews, Vol. 100, 2014, p. 1-9.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum

    AU - Bentley, Michael

    AU - Cofaigh, Colm

    AU - Anderson, John

    AU - Conway, Howard

    AU - Davies, Bethan

    AU - Graham, Alastair G C

    AU - Hillenbrand, Claus Dieter

    AU - Hodgson, Dominic

    AU - Jamieson, Stewart

    AU - Larter, Robert

    AU - Mackintosh, Andrew

    AU - Smith, James A.

    AU - Verleyen, Elie

    AU - Ackert, Robert P.

    AU - Bart, Philip

    AU - Berg, Sonja

    AU - Brunstein, Daniel

    AU - Canals, Miquel

    AU - Colhoun, Eric

    AU - Crosta, Xavier

    AU - Dickens, William

    AU - Domack, Eugene

    AU - Dowdeswell, Julian

    AU - Dunbar, Robert

    AU - Ehrmann, Werner

    AU - Evans, Jeffrey

    AU - Favier, Vincent

    AU - Fink, David

    AU - Fogwill, Christopher J.

    AU - Glasser, Neil

    AU - Gohl, Karsten

    AU - Golledge, Nicholas R.

    AU - Goodwin, Ian

    AU - Gore, Damian B.

    AU - Greenwood, Sarah

    AU - Hall, Brenda L.

    AU - Hall, Kevin

    AU - Hedding, David

    AU - Hein, Andrew

    AU - Hocking, Emma

    AU - Jakobsson, Martin

    AU - Johnson, Joanne

    AU - Jomelli, Vincent

    AU - Jones, R. Selwyn

    AU - Klages, Johann

    AU - Kristoffersen, Yngve

    AU - Kuhn, Gerhard

    AU - Leventer, Amy

    AU - Licht, Kathy

    AU - Lilly, Katherine

    AU - Lindow, Julia

    AU - Livingstone, Stephen

    AU - Masse, Guillaume

    AU - McGlone, Matt

    AU - McKay, Robert M.

    AU - Melles, Martin

    AU - Miura, Hideki

    AU - Mulvaney, Robert

    AU - Nel, Werner

    AU - Nitsche, Frank

    AU - O'Brien, Philip E.

    AU - Post, Alexandra L.

    AU - Roberts, Stephen J.

    AU - Saunders, Krystyna

    AU - Selkirk, Patricia

    AU - Simms, Alexander

    AU - Spiegel, Cornelia

    AU - Stolldorf, Travis

    AU - Sugden, David

    AU - van der Putten, Nathalie

    AU - van Ommen, Tas

    AU - Verfaillie, Deborah

    AU - Vyverman, Wim

    AU - Wagner, Bernd

    AU - WHITE, Duanne

    AU - Witus, Alexandra

    AU - Zwartz, Dan

    PY - 2014

    Y1 - 2014

    N2 - 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 20ka, 15ka, 10ka and 5ka, 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 priorit.

    AB - 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 20ka, 15ka, 10ka and 5ka, 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 priorit.

    KW - Antarctic Ice Sheet

    KW - Glacial geology

    KW - Modelling

    KW - Quaternary

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    UR - http://www.mendeley.com/research/communitybased-geological-reconstruction-antarctic-ice-sheet-deglaciation-since-last-glacial-maximum

    U2 - 10.1016/j.quascirev.2014.06.025

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    JO - Quaternary Science Reviews

    JF - Quaternary Science Reviews

    SN - 0277-3791

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