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Showing posts from October, 2012

Repeat Photography of the Glacier-clad Volcanoes in the Pacific Northwest

I recently completed fieldwork for a project capturing glacier repeat photographs on the volcanoes in the Northwest. The fieldwork was challenging but the extended dry conditions in September were fantastic - only two days of being clouded or rained out. In all, I documented over 50 photo stations between Mount Shasta to Mount Baker. Most of these were existing photo stations, though I added some new stations based on historical photographs. Additional sites were documented in the Wallowas of Oregon and in the Front Range of Colorado. These repeat photographs will be added to the Glacier Repeat Photograph Database * . The change in glacier area and volume are quite evident in the photographs. The Emmons Glacier on Mount Rainier is the largest glacier in the lower 48 states. In the comparison below, you can see the dirty glacier in the foreground of the 1938 photograph, with water flowing from an ice cave at the glacier terminus. In 2012, the glacier has receded and vegetation has ...