During the 2016-2017 Austral summer, the UK’s Antarctic Halley VI Research Station on the Brunt Ice Shelf was moved to reduce the risks posed by the growth of a large rift known as Chasm 1. This animation based on microwave radar images from the European Space Agency Sentinel-1 satellites shows the development of Chasm 1 before and after the relocation, and the hypothetical location of Halley VI over the move period based on the published start and end locations and dates (https://www.bas.ac.uk/project/moving-halley/). Watch out for the ‘Halloween Crack’ (so named because it was first discovered on 30th October 2016) as it develops over the following two years.
Brunt Ice Shelf, Halley Research Station, and rift evolution observed by Sentinel-1 SAR
