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Initiation and long-term instability of the East Antarctic Ice Sheet

Overview of attention for article published in Nature, December 2017
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (99th percentile)
  • High Attention Score compared to outputs of the same age and source (84th percentile)

Mentioned by

news
24 news outlets
blogs
3 blogs
twitter
163 tweeters
facebook
4 Facebook pages
wikipedia
1 Wikipedia page
googleplus
1 Google+ user
reddit
3 Redditors

Citations

dimensions_citation
14 Dimensions

Readers on

mendeley
90 Mendeley
Title
Initiation and long-term instability of the East Antarctic Ice Sheet
Published in
Nature, December 2017
DOI 10.1038/nature25026
Pubmed ID
Authors

Sean P. S. Gulick, Amelia E. Shevenell, Aleksandr Montelli, Rodrigo Fernandez, Catherine Smith, Sophie Warny, Steven M. Bohaty, Charlotte Sjunneskog, Amy Leventer, Bruce Frederick, Donald D. Blankenship

Abstract

Antarctica's continental-scale ice sheets have evolved over the past 50 million years. However, the dearth of ice-proximal geological records limits our understanding of past East Antarctic Ice Sheet (EAIS) behaviour and thus our ability to evaluate its response to ongoing environmental change. The EAIS is marine-terminating and grounded below sea level within the Aurora subglacial basin, indicating that this catchment, which drains ice to the Sabrina Coast, may be sensitive to climate perturbations. Here we show, using marine geological and geophysical data from the continental shelf seaward of the Aurora subglacial basin, that marine-terminating glaciers existed at the Sabrina Coast by the early to middle Eocene epoch. This finding implies the existence of substantial ice volume in the Aurora subglacial basin before continental-scale ice sheets were established about 34 million years ago. Subsequently, ice advanced across and retreated from the Sabrina Coast continental shelf at least 11 times during the Oligocene and Miocene epochs. Tunnel valleys associated with half of these glaciations indicate that a surface-meltwater-rich sub-polar glacial system existed under climate conditions similar to those anticipated with continued anthropogenic warming. Cooling since the late Miocene resulted in an expanded polar EAIS and a limited glacial response to Pliocene warmth in the Aurora subglacial basin catchment. Geological records from the Sabrina Coast shelf indicate that, in addition to ocean temperature, atmospheric temperature and surface-derived meltwater influenced East Antarctic ice mass balance under warmer-than-present climate conditions. Our results imply a dynamic EAIS response with continued anthropogenic warming and suggest that the EAIS contribution to future global sea-level projections may be under-estimated.

Twitter Demographics

The data shown below were collected from the profiles of 163 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 90 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 90 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 24 27%
Researcher 21 23%
Unspecified 11 12%
Student > Master 11 12%
Student > Doctoral Student 4 4%
Other 19 21%
Readers by discipline Count As %
Earth and Planetary Sciences 61 68%
Unspecified 13 14%
Environmental Science 8 9%
Biochemistry, Genetics and Molecular Biology 2 2%
Agricultural and Biological Sciences 1 1%
Other 5 6%

Attention Score in Context

This research output has an Altmetric Attention Score of 310. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 12 October 2018.
All research outputs
#32,422
of 12,371,951 outputs
Outputs from Nature
#3,657
of 64,910 outputs
Outputs of similar age
#1,991
of 357,696 outputs
Outputs of similar age from Nature
#124
of 782 outputs
Altmetric has tracked 12,371,951 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 64,910 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 72.3. This one has done particularly well, scoring higher than 94% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 357,696 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 99% of its contemporaries.
We're also able to compare this research output to 782 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 84% of its contemporaries.