Bedrock Erosion Surfaces Record Former East Antarctic Ice Sheet Extent
Bedrock Erosion Surfaces Record Former East Antarctic Ice Sheet Extent
复制标题
基岩侵蚀表面创下前南极东部冰盖范围
DOI:
10.1029/2018gl077268
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发表时间:
2018
影响因子:
5.2
通讯作者:
DeConto, Robert M.
中科院分区:
文献类型:
--
作者:
Paxman, Guy J.;Jamieson, Stewart S.;Ferraccioli, Fausto;Bentley, Michael J.;Ross, Neil;Armadillo, Egidio;Gasson, Edward G.;Leitchenkov, German;DeConto, Robert M.
East Antarctica hosts large subglacial basins into which the East Antarctic Ice Sheet (EAIS) likely retreated during past warmer climates. However, the extent of retreat remains poorly constrained, making quantifying past and predicted future contributions to global sea level rise from these marine basins challenging. Geomorphological analysis and flexural modeling within the Wilkes Subglacial Basin are used to reconstruct the ice margin during warm intervals of the Oligocene‐Miocene. Flat‐lying bedrock plateaus are indicative of an ice sheet margin positioned >400–500 km inland of the modern grounding zone for extended periods of the Oligocene‐Miocene, equivalent to a 2‐m rise in global sea level. Our findings imply that if major EAIS retreat occurs in the future, isostatic rebound will enable the plateau surfaces to act as seeding points for extensive ice rises, thus limiting extensive ice margin retreat of the scale seen during the early EAIS.
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影响因子:
2.9
作者:
P. Cianfarra;F. Salvini
通讯作者:
F. Salvini
影响因子:
4
作者:
R. Bingham;M. Siegert
通讯作者:
R. Bingham;M. Siegert
影响因子:
5.8
作者:
Lisker, Frank;Laeufer, Andreas L.
通讯作者:
Laeufer, Andreas L.
影响因子:
3.7
作者:
Douglas S. Wilson;B. Luyendyk
通讯作者:
B. Luyendyk
影响因子:
--
作者:
L. Tauxe;C. Stickley;S. Sugisaki;P. Bijl;S. Bohaty;H. Brinkhuis;C. Escutia;J. Flores;A. Houben;M. Iwai;F. Jiménez-Espejo;R. McKay;S. Passchier;J. Pross;C. Riesselman;U. Röhl;F. Sangiorgi;K. Welsh;A. Klaus;Annick Fehr;J. Bendle;R. Dunbar;J. Gonzàlez;T. Hayden;K. Katsuki;M. Olney;S. Pekar;P. Shrivastava;T. Flierdt;T. Williams;M. Yamane
通讯作者:
L. Tauxe;C. Stickley;S. Sugisaki;P. Bijl;S. Bohaty;H. Brinkhuis;C. Escutia;J. Flores;A. Houben;M. Iwai;F. Jiménez-Espejo;R. McKay;S. Passchier;J. Pross;C. Riesselman;U. Röhl;F. Sangiorgi;K. Welsh;A. Klaus;Annick Fehr;J. Bendle;R. Dunbar;J. Gonzàlez;T. Hayden;K. Katsuki;M. Olney;S. Pekar;P. Shrivastava;T. Flierdt;T. Williams;M. Yamane