Tasman Glacier
…mi) long, 2 kilometres (1.2 mi) wide, and 245 metres (804 ft) deep. A large calving event was possibly triggered, or at least contributed to, by the 2011 Christchurch earthquake on 22 February 2011. On this day 30 to 40 million metric tons (33 to 44 million short tons) of ice dropped from the terminal face of the Tasman Glacier…