Dakshin Gangotri Glacier, a small outlet glacier of the Antarctic ice sheet, receded at an average rate of per year from 1983 to 2002. On the Antarctic Peninsula, which is the only section of Antarctica that extends well north of the Antarctic Circle, there are hundreds of retreating glaciers. In one study of 244 glaciers on the peninsula, 212 have retreated an average of from where they were when first measured in 1953. Pine Island Glacier, an Antarctic outflow glacier that flows into the Amundsen Sea. A study from 1998 concluded that the glacier thinned ±  per year and retreated a total of in 3.8 years. The terminus of the Pine Island Glacier is a floating ice shelf, and the point at which it starts to float retreated per year from 1992 to 1996. This glacier drains a substantial portion of the West Antarctic Ice Sheet.