They then compared accumulation of ice in these cylinders to the expansion and retreat of the glacier over the past millennium. (csmonitor.com)
This exposed tall ice «cliffs» at their margin with an unstable height, and resulted in rapid retreat of the glaciers from marine ice cliff instability between 12,000 and 11,000 years ago. (sciencedaily.com)
Scientists have also observed decreases in sea - ice, a general retreat of glaciers and decreases in snow cover. (theconversation.com)