Free Republic

Scientists are warning that the collapse of Antarctica’s massive “doomsday glacier” could eventually redraw large parts of America’s coastline, threatening major cities from Florida to California with severe flooding and rising seas. Researchers say the Thwaites Glacier in West Antarctica is becoming increasingly unstable, raising fears that its eventual collapse could contribute to dramatic long-term sea level rise. While the glacier itself could add around 65 centimeters (roughly 2 feet) to global sea levels, some scientists worry it could destabilize much larger sections of the West Antarctic Ice Sheet—potentially contributing to sea level rise approaching 3 meters (nearly 10 feet)...

The massive "doomsday glacier" known for its rapid destabilization is undergoing a "vigorous ice melt" that scientists say could reshape sea level rise projections. In a new study, glaciologists from the University of California, Irvine, found that warm, high-pressure ocean water is seeping beneath West Antarctica's Thwaites Glacier, making it more vulnerable to melting than previously thought. The glacier is roughly 80 miles across, the widest on Earth. It packs so much ice that if it were to completely collapse, it could singlehandedly cause global sea levels to rise by more than two feet, according to the International Thwaites Glacier...

Ocean water is pushing miles beneath Antarctica’s “Doomsday Glacier,” making it more vulnerable to melting than previously thought, according to new research which used radar data from space to perform an X-ray of the crucial glacier. As the salty, relatively warm ocean water meets the ice, it’s causing “vigorous melting” underneath the glacier and could mean global sea level rise projections are being underestimated, according to the study published Monday in the Proceedings of the National Academy of Sciences. The Thwaites Glacier in West Antarctica — nicknamed the “Doomsday Glacier” because its collapse could cause catastrophic sea level rise —...