Anticipation of one of the biggest rifts ever detected reached a fever pitch in summer 2017
NASA Earth observatory, joshua stevens, Landsat data, USGS
In 2015, glaciologist Daniela Jansen reported that a large rift was rapidly growing across one of the Antarctic Peninsula’s ice shelves, known as Larsen C. When the shelf broke, she and colleagues predicted, it would be the largest calving event in decades.
It was. In July, a Delaware-sized iceberg split off from Larsen C (SN: 8/5/17, p. 6). And researchers knew practically the moment it happened.