How much, how fast?: A science review and outlook for research on the instability of Antarctica's Thwaites Glacier in the 21st century
Constraining how much and how fast the West Antarctic Ice Sheet (WAIS) will change in the coming decades has recently been identified as the highest priority in Antarctic research (National Academies, 2015). Here we review recent research on WAIS and outline further scientific objectives for the are...
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ftcolumbiauniv:oai:academiccommons.columbia.edu:10.7916/D8DV1R70 2023-05-15T13:24:08+02:00 How much, how fast?: A science review and outlook for research on the instability of Antarctica's Thwaites Glacier in the 21st century Scambos, Ted A. Bell, Robin E. Alley, Richard B. Anandakrishnan, S. Bromwich, D.H. Brunt, K. Christianson. K. Creyts, Timothy T. Das, S.B. DeConto, Robert M. Dutrieux, P. Fricker, H.A. Holland, D. MacGregor, J. Medley, B. Nicolas, Julien P. Pollard, D. Siegfried, M.R. Smith, A.M. Steig, E.J. Trusel, L.D. Vaughan, D.G. Yager, P.L. 2017 https://doi.org/10.7916/D8DV1R70 English eng https://doi.org/10.7916/D8DV1R70 Climatic changes Glaciers Glaciers--Climatic factors Glaciology Sea level Articles 2017 ftcolumbiauniv https://doi.org/10.7916/D8DV1R70 2019-04-04T08:15:56Z Constraining how much and how fast the West Antarctic Ice Sheet (WAIS) will change in the coming decades has recently been identified as the highest priority in Antarctic research (National Academies, 2015). Here we review recent research on WAIS and outline further scientific objectives for the area now identified as the most likely to undergo near-term significant change: Thwaites Glacier and the adjacent Amundsen Sea. Multiple lines of evidence point to an ongoing rapid loss of ice in this region in response to changing atmospheric and oceanic conditions. Models of the ice sheet's dynamic behavior indicate a potential for greatly accelerated ice loss as ocean-driven melting at the Thwaites Glacier grounding zone and nearby areas leads to thinning, faster flow, and retreat. A complete retreat of the Thwaites Glacier basin would raise global sea level by more than three meters by entraining ice from adjacent catchments. This scenario could occur over the next few centuries, and faster ice loss could occur through processes omitted from most ice flow models such as hydrofracture and ice cliff failure, which have been observed in recent rapid ice retreats elsewhere. Increased basal melt at the grounding zone and increased potential for hydrofracture due to enhanced surface melt could initiate a more rapid collapse of Thwaites Glacier within the next few decades. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Ice Sheet Thwaites Glacier Columbia University: Academic Commons Antarctic Amundsen Sea West Antarctic Ice Sheet Thwaites Glacier ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
institution |
Open Polar |
collection |
Columbia University: Academic Commons |
op_collection_id |
ftcolumbiauniv |
language |
English |
topic |
Climatic changes Glaciers Glaciers--Climatic factors Glaciology Sea level |
spellingShingle |
Climatic changes Glaciers Glaciers--Climatic factors Glaciology Sea level Scambos, Ted A. Bell, Robin E. Alley, Richard B. Anandakrishnan, S. Bromwich, D.H. Brunt, K. Christianson. K. Creyts, Timothy T. Das, S.B. DeConto, Robert M. Dutrieux, P. Fricker, H.A. Holland, D. MacGregor, J. Medley, B. Nicolas, Julien P. Pollard, D. Siegfried, M.R. Smith, A.M. Steig, E.J. Trusel, L.D. Vaughan, D.G. Yager, P.L. How much, how fast?: A science review and outlook for research on the instability of Antarctica's Thwaites Glacier in the 21st century |
topic_facet |
Climatic changes Glaciers Glaciers--Climatic factors Glaciology Sea level |
description |
Constraining how much and how fast the West Antarctic Ice Sheet (WAIS) will change in the coming decades has recently been identified as the highest priority in Antarctic research (National Academies, 2015). Here we review recent research on WAIS and outline further scientific objectives for the area now identified as the most likely to undergo near-term significant change: Thwaites Glacier and the adjacent Amundsen Sea. Multiple lines of evidence point to an ongoing rapid loss of ice in this region in response to changing atmospheric and oceanic conditions. Models of the ice sheet's dynamic behavior indicate a potential for greatly accelerated ice loss as ocean-driven melting at the Thwaites Glacier grounding zone and nearby areas leads to thinning, faster flow, and retreat. A complete retreat of the Thwaites Glacier basin would raise global sea level by more than three meters by entraining ice from adjacent catchments. This scenario could occur over the next few centuries, and faster ice loss could occur through processes omitted from most ice flow models such as hydrofracture and ice cliff failure, which have been observed in recent rapid ice retreats elsewhere. Increased basal melt at the grounding zone and increased potential for hydrofracture due to enhanced surface melt could initiate a more rapid collapse of Thwaites Glacier within the next few decades. |
format |
Article in Journal/Newspaper |
author |
Scambos, Ted A. Bell, Robin E. Alley, Richard B. Anandakrishnan, S. Bromwich, D.H. Brunt, K. Christianson. K. Creyts, Timothy T. Das, S.B. DeConto, Robert M. Dutrieux, P. Fricker, H.A. Holland, D. MacGregor, J. Medley, B. Nicolas, Julien P. Pollard, D. Siegfried, M.R. Smith, A.M. Steig, E.J. Trusel, L.D. Vaughan, D.G. Yager, P.L. |
author_facet |
Scambos, Ted A. Bell, Robin E. Alley, Richard B. Anandakrishnan, S. Bromwich, D.H. Brunt, K. Christianson. K. Creyts, Timothy T. Das, S.B. DeConto, Robert M. Dutrieux, P. Fricker, H.A. Holland, D. MacGregor, J. Medley, B. Nicolas, Julien P. Pollard, D. Siegfried, M.R. Smith, A.M. Steig, E.J. Trusel, L.D. Vaughan, D.G. Yager, P.L. |
author_sort |
Scambos, Ted A. |
title |
How much, how fast?: A science review and outlook for research on the instability of Antarctica's Thwaites Glacier in the 21st century |
title_short |
How much, how fast?: A science review and outlook for research on the instability of Antarctica's Thwaites Glacier in the 21st century |
title_full |
How much, how fast?: A science review and outlook for research on the instability of Antarctica's Thwaites Glacier in the 21st century |
title_fullStr |
How much, how fast?: A science review and outlook for research on the instability of Antarctica's Thwaites Glacier in the 21st century |
title_full_unstemmed |
How much, how fast?: A science review and outlook for research on the instability of Antarctica's Thwaites Glacier in the 21st century |
title_sort |
how much, how fast?: a science review and outlook for research on the instability of antarctica's thwaites glacier in the 21st century |
publishDate |
2017 |
url |
https://doi.org/10.7916/D8DV1R70 |
long_lat |
ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
geographic |
Antarctic Amundsen Sea West Antarctic Ice Sheet Thwaites Glacier |
geographic_facet |
Antarctic Amundsen Sea West Antarctic Ice Sheet Thwaites Glacier |
genre |
Amundsen Sea Antarc* Antarctic Ice Sheet Thwaites Glacier |
genre_facet |
Amundsen Sea Antarc* Antarctic Ice Sheet Thwaites Glacier |
op_relation |
https://doi.org/10.7916/D8DV1R70 |
op_doi |
https://doi.org/10.7916/D8DV1R70 |
_version_ |
1766377662387847168 |