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Can carbon storage in West Antarctic fjords have an impact on climate change, following glacier retreat? 期刊论文
Global Change Biology, 2021
作者:  William R. Hunter
收藏  |  浏览/下载:3/0  |  提交时间:2022/01/29
Response of Antarctic soil fauna to climate-driven changes since the Last Glacial Maximum 期刊论文
Global Change Biology, 2021
作者:  André;  L. C. Franco;  Byron J. Adams;  Melisa A. Diaz;  Nathan P. Lemoine;  Nicholas B. Dragone;  Noah Fierer;  W. Berry Lyons;  Ian Hogg;  Diana H. Wall
收藏  |  浏览/下载:11/0  |  提交时间:2021/11/15
Quantification of blue carbon pathways contributing to negative feedback on climate change following glacier retreat in West Antarctic fjords 期刊论文
Global Change Biology, 2021
作者:  Nadescha Zwerschke;  Chester J. Sands;  Alejandro Roman-Gonzalez;  David K. A. Barnes;  Alice Guzzi;  Stuart Jenkins;  Carlos Muñ;  oz-Ramí;  rez;  James Scourse
收藏  |  浏览/下载:11/0  |  提交时间:2021/10/22
Evidence of cascading subglacial water flow at Jutulstraumen Glacier (Antarctica) derived from Sentinel-1 and ICESat-2 measurements 期刊论文
Geophysical Research Letters, 2021
作者:  Niklas Neckel;  Steven Franke;  Veit Helm;  Reinhard Drews;  Daniela Jansen
收藏  |  浏览/下载:8/0  |  提交时间:2021/10/22
Large-Scale Atmospheric Drivers of Snowfall over Thwaites Glacier, Antarctica 期刊论文
Geophysical Research Letters, 2021
作者:  M. L. Maclennan;  J. T. M. Lenaerts
收藏  |  浏览/下载:7/0  |  提交时间:2021/08/25
Widespread grounding line retreat of Totten Glacier, East Antarctica, over the 21st century 期刊论文
Geophysical Research Letters, 2021
作者:  Tyler Pelle;  Mathieu Morlighem;  Yoshihiro Nakayama;  Helene Seroussi
收藏  |  浏览/下载:12/0  |  提交时间:2021/08/25
Antarctic Slope Current modulates ocean heat intrusions towards Totten Glacier 期刊论文
Geophysical Research Letters, 2021
作者:  Yoshihiro Nakayama;  Chad A. Greene;  Fernando S. Paolo;  Vigan Mensah;  Hong Zhang;  Haruhiko Kashiwase;  Daisuke Simizu;  Jamin S. Greenbaum;  Donald D. Blankenship;  Ayako Abe-Ouchi;  Shigeru Aoki
收藏  |  浏览/下载:6/0  |  提交时间:2021/08/25
The Global Fingerprint of Modern Ice-Mass Loss on 3-D Crustal Motion 期刊论文
Geophysical Research Letters, 2021
作者:  Sophie Coulson;  Mila Lubeck;  Jerry X. Mitrovica;  Evelyn Powell;  James L. Davis;  Mark J. Hoggard
收藏  |  浏览/下载:12/0  |  提交时间:2021/08/25
Is the marine ice cliff hypothesis collapsing? 期刊论文
Science, 2021
作者:  Nicholas R. Golledge;  Daniel P. Lowry
收藏  |  浏览/下载:20/0  |  提交时间:2021/06/24
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:18/0  |  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.