Environment Counts | Rapid thinning of the Pine Island glacier also occurred 8,000 years ago :
Pine Island Glacier, a major outlet of the West Antarctic Ice Sheet, has been undergoing rapid thinning and retreat for the past two decades.
This study shows that Pine Island Glacier also experienced rapid thinning of about a meter per year, which is comparable to modern rates, about 8,000 years ago. The thinning continued for decades to centuries. The most likely mechanism was a reduction in ice shelf buttressing where warmer seas melted the floating end of the glacier, removing a buttress and letting ice on land slide more quickly into the sea. Science February 20 2014 DOI:10.1126/science.1247385