13 June, 2019 by Nicholas O'Flaherty
There are now only 5km of ice separating Chasm 1 and Halloween Cracks on the Brunt Ice Shelf. When they meet, a large iceberg of approx 1590 km2 will break off. Halley VI station was moved to the east of Chasm 1 in 2017.
Chasm1 is located on the west side of the Brunt Ice Shelf. It lay dormant for 35 years, but in 2012 it showed signs of movement before starting to propagate across the ice shelf. In 2014 the crack began to grow even more rapidly, and is now over 55 km long!
More information at Centre for Polar Observation and Modelling Data, ESA