Boulder Glacier: circa 1910 M Elrod, Glacier National Park Archives - 8/24/2007 D Fagre & G Pederson, USGS
Images
Boulder Glacier: circa 1910 M Elrod, Glacier National Park Archives - 8/24/2007 D Fagre & G Pederson, USGS
Blackfoot & Jackson Glaciers: 8/1/1914 EC Stebinger, USGS Photographic Library – 9/3/2009 L McKeon, USGS
Since the historic photo was taken, Blackfoot Glacier has retreated and fragmented into two separate glaciers, Blackfoot (foreground) and Jackson (distant) Glaciers.
Blackfoot & Jackson Glaciers: 8/1/1914 EC Stebinger, USGS Photographic Library – 9/3/2009 L McKeon, USGS
Since the historic photo was taken, Blackfoot Glacier has retreated and fragmented into two separate glaciers, Blackfoot (foreground) and Jackson (distant) Glaciers.
Boulder Glacier in 1910 (Elrod photo, GNP Archives) and in 2007 (Fagre/Pederson photo, USGS). Matching the intersection of the peaks in the background helps the repeat photographer locate the photo point. USGS Public domain
Boulder Glacier in 1910 (Elrod photo, GNP Archives) and in 2007 (Fagre/Pederson photo, USGS). Matching the intersection of the peaks in the background helps the repeat photographer locate the photo point. USGS Public domain
Grinnell, Gem & Salamander Glaciers: 8/9/1910 M Elrod, U of M Library – 9/27/2016 L McKeon, USGS
View the full collection at USGS Photographic Library
Grinnell, Gem & Salamander Glaciers: 8/9/1910 M Elrod, U of M Library – 9/27/2016 L McKeon, USGS
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Agassiz Glacier: 8/5/1913 WC Alden, USGS Photographic Library - 8/24/2007, D Fagre, USGS
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Agassiz Glacier: 8/5/1913 WC Alden, USGS Photographic Library - 8/24/2007, D Fagre, USGS
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Repeat photo of Harrison Glacier. 8/20/1913 by WC Alden, USGS Photographic Library, 7/30/2009 by Ralph Thornton, USGS.
Repeat photo of Harrison Glacier. 8/20/1913 by WC Alden, USGS Photographic Library, 7/30/2009 by Ralph Thornton, USGS.
Karen Holzer and Lisa McKeon rephotograph Shepard Glacier from the slope of Pyramid Peak, Glacier National Park. 1998 USGS photo.
Karen Holzer and Lisa McKeon rephotograph Shepard Glacier from the slope of Pyramid Peak, Glacier National Park. 1998 USGS photo.
Chaney Glacier: 1911, MR Campbell, USGS Photographic Library – 8/19/2005 Karen Milone, USGS
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Chaney Glacier: 1911, MR Campbell, USGS Photographic Library – 8/19/2005 Karen Milone, USGS
View the full collection at USGS Photographic Library
Boulder Glacier Ice Cave: 1932, TJ Hileman, GNP Archives – 1988, J DeSanto, U of M Library
This photo pair inspired the USGS to document glacier and landscape change using oblique photography.
Boulder Glacier Ice Cave: 1932, TJ Hileman, GNP Archives – 1988, J DeSanto, U of M Library
This photo pair inspired the USGS to document glacier and landscape change using oblique photography.
Grinnell Glacier in 1910 (Elrod photo, U of M Collection) and 2016 (McKeon photo, USGS). Retreat resulted in glacier fragmentation, so the 2016 scene shows both Grinnell Glacier, hugging the base of the cliff, and The Salamander Glacier, perched above, along the right edge of the photograph.
Grinnell Glacier in 1910 (Elrod photo, U of M Collection) and 2016 (McKeon photo, USGS). Retreat resulted in glacier fragmentation, so the 2016 scene shows both Grinnell Glacier, hugging the base of the cliff, and The Salamander Glacier, perched above, along the right edge of the photograph.
Shepard Glacier: 9/6/1913, WC Alden, USGS Photo Library – 8/21/2005, B. Reardon, USGS
Shepard Glacier: 9/6/1913, WC Alden, USGS Photo Library – 8/21/2005, B. Reardon, USGS
Sperry Glacier: circa 1930, MJ Elrod, U of M Library – 9/17/2008, L McKeon, USGS
Repeating this photo from the same photo point was impossible since the historic photo was shot from the elevated perspective of the glacier’s surface.
Sperry Glacier: circa 1930, MJ Elrod, U of M Library – 9/17/2008, L McKeon, USGS
Repeating this photo from the same photo point was impossible since the historic photo was shot from the elevated perspective of the glacier’s surface.
Grinnell and The Salamander Glaciers from the summit of Mt. Gould: 1938, TJ Hileman, GNP Archives – 9/4/2019, L McKeon, USGS
Upper Grinnell Lake has formed as the glacier has retreated. The change in height of Grinnell Glacier along the cliff face hints at volume loss during this timespan.
Grinnell and The Salamander Glaciers from the summit of Mt. Gould: 1938, TJ Hileman, GNP Archives – 9/4/2019, L McKeon, USGS
Upper Grinnell Lake has formed as the glacier has retreated. The change in height of Grinnell Glacier along the cliff face hints at volume loss during this timespan.
Swiftcurrent Glacier: circa 1910, M. Elod, GNP Archives - 9/27/2016, L McKeon, USGS
During the timespan between these photos, it is evident that Swiftcurrent Glacier has retreated and wildfire has consumed a patch of trees at the base of Swiftcurrent Mountain, the broad, beige slope in the background.
Swiftcurrent Glacier: circa 1910, M. Elod, GNP Archives - 9/27/2016, L McKeon, USGS
During the timespan between these photos, it is evident that Swiftcurrent Glacier has retreated and wildfire has consumed a patch of trees at the base of Swiftcurrent Mountain, the broad, beige slope in the background.
Logan and Red Eagle Glaciers: Aug. 1914, EC Stebinger, USGS Photo Library – 9/2/2009, L McKeon, USGS
These glaciers were once a continuous glacier, but became separate glaciers as retreat progressed.
Logan and Red Eagle Glaciers: Aug. 1914, EC Stebinger, USGS Photo Library – 9/2/2009, L McKeon, USGS
These glaciers were once a continuous glacier, but became separate glaciers as retreat progressed.
Jackson Glacier: 1912, MJ Elrod, U of M Library – 9/3/2009, L McKeon, USGS
Trees and vegetation continue to establish themselves at the base of Jackson Glacier as the glacier retreats.
Jackson Glacier: 1912, MJ Elrod, U of M Library – 9/3/2009, L McKeon, USGS
Trees and vegetation continue to establish themselves at the base of Jackson Glacier as the glacier retreats.
Avalanche debris covers a road in Glacier National Park at Red Rock point.
Avalanche debris covers a road in Glacier National Park at Red Rock point.
Researchers taking aquatic insect samples in a high-elevation Glacier National Park stream as part of ecohydrological monitoring efforts to study the effects of climate change on aquatic species and ecosystems.
Researchers taking aquatic insect samples in a high-elevation Glacier National Park stream as part of ecohydrological monitoring efforts to study the effects of climate change on aquatic species and ecosystems.
Three researchers on the summit of Dancing Lady Mountain set up tapes and grids to complete a Global Observation Research Initiative in Alpine Environments network (GLORIA) vegetation survey.
Three researchers on the summit of Dancing Lady Mountain set up tapes and grids to complete a Global Observation Research Initiative in Alpine Environments network (GLORIA) vegetation survey.
Aerial photo showing fracture line of avalanche along a snow ridge line.
Aerial photo showing fracture line of avalanche along a snow ridge line.
Researchers evaluate vegetation during a Global Observation Research Initiative in Alpine (GLORIA) alpine plant survey near the summit of Seward Mountain in Glacier National Park, Montana.
Researchers evaluate vegetation during a Global Observation Research Initiative in Alpine (GLORIA) alpine plant survey near the summit of Seward Mountain in Glacier National Park, Montana.