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Tag: Glacier

Iceberg 4 miles wide breaks off from Greenland glacier

Iceberg 4 miles wide breaks off from Greenland glacier

Technology
An iceberg four miles (six kilometers) wide has broken off from a glacier in eastern Greenland and scientists have captured the dramatic event on video. New York University professor David Holland, an expert in atmospheric and ocean science, told The Associated Press that "this is the largest event we've seen in over a decade in Greenland." A June 22 video of the incident was taken by his wife, Denise Holland of NYU's Environmental Fluid Dynamics Laboratory. They had camped by the Helheim Glacier for weeks to collect data to better project sea level changes due to global warming. Holland said Wednesday that the time-lapse video, which is speeded up 20 times, shows "3 percent of the annual ice loss of Greenland occur in 30 minutes." "It sounded like rockets going off," he said, describing...
UK-US initiative to study mighty Thwaites Glacier

UK-US initiative to study mighty Thwaites Glacier

Science
It is going to be one of the biggest projects ever undertaken in Antarctica. UK and US scientists will lead a five-year effort to examine the stability of the mighty Thwaites Glacier. This ice stream in the west of the continent is comparable in size to Britain. It is melting and is currently in rapid retreat, accounting for around 4% of global sea-level rise - an amount that has doubled since the mid-1990s. Researchers want to know if Thwaites could collapse. Were it to do so, its lost ice would push up the oceans by 80cm or more. Some computer models have suggested such an outcome is inevitable if conditions continue as they are - albeit on a timescale of centuries. But these simulations need to be anchored in many more real-world observations, which will now be acquired thanks to the jo...