Report for: Marine Ice Sheet Collapse Potentially Under Way for the Thwaites Glacier Basin, West Antarctica

Title	Marine Ice Sheet Collapse Potentially Under Way for the Thwaites Glacier Basin, West Antarctica
Published in	Science, May 2014
DOI	10.1126/science.1249055
Pubmed ID	24821948
Authors	I. Joughin, B. E. Smith, B. Medley
Abstract	Resting atop a deep marine basin, the West Antarctic Ice Sheet has long been considered prone to instability. Using a numerical model, we investigated the sensitivity of Thwaites Glacier to ocean melt and whether its unstable retreat is already under way. Our model reproduces observed losses when forced with ocean melt comparable to estimates. Simulated losses are moderate (<0.25 mm per year at sea level) over the 21st century but generally increase thereafter. Except possibly for the lowest-melt scenario, the simulations indicate that early-stage collapse has begun. Less certain is the time scale, with the onset of rapid (>1 mm per year of sea-level rise) collapse in the different simulations within the range of 200 to 900 years.

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Twitter Demographics

The data shown below were collected from the profiles of 227 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Geographical breakdown

Country	Count	As %
United States	53	23%
United Kingdom	18	8%
Spain	11	5%
Sweden	7	3%
Australia	7	3%
Canada	4	2%
Puerto Rico	3	1%
Ireland	3	1%
Germany	3	1%
Other	24	11%
Unknown	94	41%

Demographic breakdown

Type	Count	As %
Members of the public	182	80%
Scientists	31	14%
Science communicators (journalists, bloggers, editors)	13	6%
Practitioners (doctors, other healthcare professionals)	1	<1%

Mendeley readers

The data shown below were compiled from readership statistics for 506 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country	Count	As %
United States	11	2%
Germany	4	<1%
Canada	3	<1%
Belgium	2	<1%
Australia	2	<1%
Netherlands	2	<1%
United Kingdom	2	<1%
Brazil	1	<1%
Ghana	1	<1%
Other	3	<1%
Unknown	475	94%

Demographic breakdown

Readers by professional status	Count	As %
Researcher	141	28%
Student > Ph. D. Student	113	22%
Student > Master	56	11%
Student > Bachelor	37	7%
Professor	24	5%
Other	93	18%
Unknown	42	8%

Readers by discipline	Count	As %
Earth and Planetary Sciences	254	50%
Environmental Science	80	16%
Agricultural and Biological Sciences	30	6%
Physics and Astronomy	15	3%
Engineering	12	2%
Other	58	11%
Unknown	57	11%

Attention Score in Context

This research output has an Altmetric Attention Score of 1493. 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 17 March 2020.

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#2,468

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Outputs from Science

#188

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Outputs of similar age

#19

of 190,949 outputs

Outputs of similar age from Science

of 873 outputs

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Marine Ice Sheet Collapse Potentially Under Way for the Thwaites Glacier Basin, West Antarctica

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