Environment Counts | Massive collapse of Antarctica ice shelf likely due to surface warming :
In February to March of 2002, the Larsen-B ice shelf in the Antarctica catastrophically collapsed in one season with a loss of 3,250 square km of floating ice. Larsen B had been stable for 12,000 years since the last glacial period.
Radiocarbon-constrained chronologies from marine sediment cores collected in 2006 indicate loss of ice contact with the sea floor occurred about 12,000 years ago. This is interpreted as implying that the 2002 Larsen-B Ice Shelf collapse likely was a response to surface warming rather than to grounding zone instability. Rebesco, Science 12 September 2014:Vol. 345 no. 6202 pp. 1354-1358 DOI: 10.1126/science.1256697