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 256 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	54	21%
United Kingdom	20	8%
Spain	10	4%
Sweden	7	3%
Australia	7	3%
Puerto Rico	4	2%
Canada	4	2%
Germany	4	2%
Mexico	3	1%
Other	30	12%
Unknown	113	44%

Demographic breakdown

Type	Count	As %
Members of the public	204	80%
Scientists	34	13%
Science communicators (journalists, bloggers, editors)	14	5%
Practitioners (doctors, other healthcare professionals)	4	2%

Mendeley readers

The data shown below were compiled from readership statistics for 550 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country	Count	As %
United States	11	2%
Canada	3	<1%
Germany	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	520	95%

Demographic breakdown

Readers by professional status	Count	As %
Researcher	149	27%
Student > Ph. D. Student	121	22%
Student > Master	59	11%
Student > Bachelor	46	8%
Professor	26	5%
Other	99	18%
Unknown	50	9%

Readers by discipline	Count	As %
Earth and Planetary Sciences	276	50%
Environmental Science	85	15%
Agricultural and Biological Sciences	29	5%
Physics and Astronomy	16	3%
Engineering	15	3%
Other	64	12%
Unknown	65	12%

Attention Score in Context

This research output has an Altmetric Attention Score of 1533. 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 05 May 2021.

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#3,694

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Outputs from Science

#249

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Outputs of similar age

#20

of 196,886 outputs

Outputs of similar age from Science

of 874 outputs

Altmetric has tracked 17,709,629 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.

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

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