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Complex polychaete reefs in East Antarctica 期刊论文
Frontiers in Ecology and the Environment, 2022
作者:  Narissa Bax;  Jonathan S Stark
收藏  |  浏览/下载:5/0  |  提交时间:2022/02/16
Thermohaline structure and circulation beneath the Langhovde Glacier ice shelf in East Antarctica 期刊论文
Nature Communications, 2021
作者:  Masahiro Minowa;  Shin Sugiyama;  Masato Ito;  Shiori Yamane;  Shigeru Aoki
收藏  |  浏览/下载:5/0  |  提交时间:2021/07/27
Marshes on the move 期刊论文
Science, 2021
作者:  Gabriel Popkin
收藏  |  浏览/下载:7/0  |  提交时间:2021/06/24
Antarctic surface temperature and elevation during the Last Glacial Maximum 期刊论文
Science, 2021
作者:  Christo Buizert;  T. J. Fudge;  William H. G. Roberts;  Eric J. Steig;  Sam Sherriff-Tadano;  Catherine Ritz;  Eric Lefebvre;  Jon Edwards;  Kenji Kawamura;  Ikumi Oyabu;  Hideaki Motoyama;  Emma C. Kahle;  Tyler R. Jones;  Ayako Abe-Ouchi;  Takashi Obase;  Carlos Martin;  Hugh Corr;  Jeffrey P. Severinghaus;  Ross Beaudette;  Jenna A. Epifanio;  Edward J. Brook;  Kaden Martin;  Jérôme Chappellaz;  Shuji Aoki;  Takakiyo Nakazawa;  Todd A. Sowers;  Richard B. Alley;  Jinho Ahn;  Michael Sigl;  Mirko Severi;  Nelia W. Dunbar;  Anders Svensson;  John M. Fegyveresi;  Chengfei He;  Zhengyu Liu;  Jiang Zhu;  Bette L. Otto-Bliesner;  Vladimir Y. Lipenkov;  Masa Kageyama;  Jakob Schwander
收藏  |  浏览/下载:14/0  |  提交时间:2021/06/15
Shifting ground 期刊论文
Science, 2021
作者:  Julia Rosen
收藏  |  浏览/下载:17/0  |  提交时间:2021/03/02
Strong ice-ocean interaction beneath Shirase Glacier Tongue in East Antarctica 期刊论文
Nature Communications, 2020
作者:  Daisuke Hirano;  Takeshi Tamura;  Kazuya Kusahara;  Kay I. Ohshima;  Keith W. Nicholls;  Shuki Ushio;  Daisuke Simizu;  Kazuya Ono;  Masakazu Fujii;  Yoshifumi Nogi;  Shigeru Aoki
收藏  |  浏览/下载:9/0  |  提交时间:2020/09/08
Ice retreat in Wilkes Basin of East Antarctica during a warm interglacial 期刊论文
NATURE, 2020, 583 (7817) : 554-+
作者:  T. Blackburn;  G. H. Edwards;  S. Tulaczyk;  M. Scudder;  G. Piccione;  B. Hallet;  N. McLean;  J. C. Zachos;  B. Cheney;  J. T. Babbe
收藏  |  浏览/下载:21/0  |  提交时间:2020/08/09

Uranium isotopes in subglacial precipitates from the Wilkes Basin of the East Antarctic Ice Sheet reveal ice retreat during a warm Pleistocene interglacial period about 400,000 years ago.


Efforts to improve sea level forecasting on a warming planet have focused on determining the temperature, sea level and extent of polar ice sheets during Earth'  s past interglacial warm periods(1-3). About 400,000 years ago, during the interglacial period known as Marine Isotopic Stage 11 (MIS11), the global temperature was 1 to 2 degrees Celsius greater(2)and sea level was 6 to 13 metres higher(1,3). Sea level estimates in excess of about 10 metres, however, have been discounted because these require a contribution from the East Antarctic Ice Sheet(3), which has been argued to have remained stable for millions of years before and includes MIS11(4,5). Here we show how the evolution of(234)U enrichment within the subglacial waters of East Antarctica recorded the ice sheet'  s response to MIS11 warming. Within the Wilkes Basin, subglacial chemical precipitates of opal and calcite record accumulation of(234)U (the product of rock-water contact within an isolated subglacial reservoir) up to 20 times higher than that found in marine waters. The timescales of(234)U enrichment place the inception of this reservoir at MIS11. Informed by the(234)U cycling observed in the Laurentide Ice Sheet, where(234)U accumulated during periods of ice stability(6)and was flushed to global oceans in response to deglaciation(7), we interpret our East Antarctic dataset to represent ice loss within the Wilkes Basin at MIS11. The(234)U accumulation within the Wilkes Basin is also observed in the McMurdo Dry Valleys brines(8-10), indicating(11)that the brine originated beneath the adjacent East Antarctic Ice Sheet. The marine origin of brine salts(10)and bacteria(12)implies that MIS11 ice loss was coupled with marine flooding. Collectively, these data indicate that during one of the warmest Pleistocene interglacials, the ice sheet margin at the Wilkes Basin retreated to near the precipitate location, about 700 kilometres inland from the current position of the ice margin, which-assuming current ice volumes-would have contributed about 3 to 4 metres(13)to global sea levels.


  
East Antarctica's ice is melting rapidly 期刊论文
SCIENCE, 2019, 363 (6424) : 210-210
作者:  Guterman, Lila
收藏  |  浏览/下载:2/0  |  提交时间:2019/11/27
Ice sheet contributions to future sea-level rise from structured expert judgment 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (23) : 11195-11200
作者:  Bamber, Jonathan L.;  Oppenheimer, Michael;  Kopp, Robert E.;  Aspinall, Willy P.;  Cooke, Roger M.
收藏  |  浏览/下载:15/0  |  提交时间:2019/11/27
sea-level rise  climate predictions  ice sheets  Greenland  Antarctica  
Four decades of Antarctic Ice Sheet mass balance from 1979-2017 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (4) : 1095-1103
作者:  Rignot, Eric;  Mouginot, Jeremie;  Scheuchl, Bernd;  van den Broeke, Michiel;  van Wessem, Melchior J.;  Morlighem, Mathieu
收藏  |  浏览/下载:11/0  |  提交时间:2019/11/27
glaciology  Antarctica  remote sensing  climate change  sea-level rise