Wednesday 16 May 2007

Glacial Retreat

Link to EO Newsroom: New Images - Glacial Retreat

In North America, the most visited glacier is the Athabasca Glacier, one of six glaciers that spill down the Canadian Rockies from the Columbia Icefield in western Canada. Visitors who return to the glacier a few years after their first visit will notice the change wrought by warming temperatures. In the past 125 years, the Athabasca Glacier has lost half of its volume and receded more than 1.5 kilometers (0.93 miles), leaving hills of rock in its place. Its retreat is visible in this photo, where the glacier’s front edge looms several meters behind the tombstone-like marker that indicates the edge of the ice in 1992.