Satellite imagery over Antarctica shows the rapid deterioration of two glaciers -- the most watched by climate scientists -- over recent decades, which could indicate rising sea levels globally.
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"Thwaites Glacier is often referred to as the weak underbelly of the West Antarctic ice sheet," Goehring said."If those glaciers would destabilize, a lot of neighboring areas would also fall apart, causing a widespread collapse," Das said."It would cause a huge sea level rise." Both glaciers show distinct changes in recent decades driven by changes in atmospheric and ocean conditions that have caused melting of their floating ice shelves. Both glaciers have experienced accelerated thinning as a result.
New damage to the ice shelf then triggers a feedback process, which then speeds up and weakens the damage in the sheer zones, according to the study. This process is generally not accounted for in current ice sheet models looking at how to slow sea level rise. "We’re moving as fast as we can to understand how much and how fast" the damage is occurring as well as every possible mode of melting, Goehring said.Ice is viewed near the coast of West Antarctica from a window of a NASA Operation IceBridge airplane, Oct. 28, 2016, in-flight over Antarctica.
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