The Doomsday Glacier is melting − fast. How Sea Level Rise Could Drench The World Map.
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By Doyle Rice.
More unsettling news from the bottom of the world.
Scientists have uncovered evidence of “vigorous melting” at Antarctica’s Thwaites Glacier, (aka the “Doomsday Glacier”) according to a new study published Monday in the journal Proceedings of the National Academy of Sciences. And for the first time, there is visible evidence that shows warm seawater pumping underneath the glacier.
The Thwaites Glacier, part of the vast West Antarctic Ice Sheet, is one of the world’s fastest-changing and most unstable glaciers. At 74,000 square miles large, it’s roughly the size of the state of Florida.
What is the Doomsday Glacier?
It’s called the Doomsday Glacier because of its potential to dramatically raise sea levels in places such as Florida, and it has been studied for years as an indicator of human-caused climate change.
Study results also suggest the Antarctic Ice Sheet is more vulnerable to a warming ocean than previously thought, and, worryingly, may “require a reassessment of sea-level rise projections.”
A ‘most unstable place’
“Thwaites is the most unstable place in the Antarctic and contains the equivalent of 60 centimeters (2 feet) of sea-level rise,” said study co-author Christine Dow of the University of Waterloo in Ontario. “The worry is that we are underestimating the speed that the glacier is changing, which would be devastating for coastal communities around the world.”
To conduct the study, scientists used high-resolution satellite radar data to find evidence of the intrusion of warm, high-pressure seawater many miles beneath the grounded ice of the Thwaites Glacier.
Study lead author Eric Rignot of the University of California, Irvine told USA TODAY that there’s much more seawater flowing into the glacier than had been previously thought. These “intrusions make the glacier more sensitive to ocean warming, and more likely to fall apart as the ocean gets warmer.”
read more at ustoday.com.
