The study's findings are significant, given that some predict the West Antarctic ice sheet could melt quickly due to global warming.
If the East Antarctic ice sheet, which is 10 times larger than the western ice sheet, melted completely, it would cause sea levels worldwide to rise almost 200 feet, according to Kathy Licht, an associate professor in the Department of Earth Sciences in the School of Science at IUPUI.
Licht led a research team into the Transarctic Mountains in search of physical evidence that would verify whether a long-standing idea was still true: The East Antarctic ice sheet is stable.
The East Antarctic ice sheet has long been considered relatively stable because most of the ice sheet was thought to rest on bedrock above sea level, making it less susceptible to changes in climate. However, recent studies show widespread water beneath it and higher melt potential from impinging ocean water.
The West Antarctic ice sheet is a marine-based ice sheet that is mostly grounded below sea level, which makes it much more susceptible to changes in sea level and variations in ocean temperature.
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The big question the team wanted to answer was how sensitive the East Antarctic sheet might be to climate change.
"There are models that predict that the interior of the East Antarctic ice sheet wouldn't change very much, even if the West Antarctic ice sheet was taken away," Licht said. According to these models, even if the ice sheet's perimeter retreats, its core remains stable.
"It turns out that our data support... those models," she said. "It's nice to have that validation."
Read more at Study Validates East Antarctic Ice Sheet to Remain Stable Even If Western Ice Sheet Melts
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