Aerial photo of Sperry Glacier, Digital Globe image taken 08/26/2016. Aerial imagery, like this photo of Sperry Glacier, is used to create digital elevation models (DEMs) used to extrapolate mass balance field measurements over the entire glacier.
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Aerial photo of Sperry Glacier
Aerial photo of Sperry Glacier, Digital Globe image taken 08/26/2016. Aerial imagery, like this photo of Sperry Glacier, is used to create digital elevation models (DEMs) used to extrapolate mass balance field measurements over the entire glacier.
Ice patch in Greater Yellowstone Ecosystem
An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem.
An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem.
Ice patch in Greater Yellowstone Ecosystem
An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem
An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem
Researchers Scouting a Drilling Location on an Ice Patch
Researchers Scouting a Drilling Location on an Ice PatchCraig Lee and Mike Jayred scout a potential drilling location for extracting an ice core.
Researchers Scouting a Drilling Location on an Ice Patch
Researchers Scouting a Drilling Location on an Ice PatchCraig Lee and Mike Jayred scout a potential drilling location for extracting an ice core.
USGS - NOROCK Research team in the Northern Cascades.
USGS - NOROCK Research team in the Northern Cascades.USGS - NOROCK field team in the Northern Cascades studying Hoary marmots and American pika and snowpack dynamics.
USGS - NOROCK Research team in the Northern Cascades.
USGS - NOROCK Research team in the Northern Cascades.USGS - NOROCK field team in the Northern Cascades studying Hoary marmots and American pika and snowpack dynamics.
American bullfrog close-up
An American bullfrom is native to most eastern states, but considered invasive in the moutain west.
An American bullfrom is native to most eastern states, but considered invasive in the moutain west.
Fish Swimming on Gravel Bed
Fish swim along the gravel bed bottom of the North Fork of the Flathead River.
Fish swim along the gravel bed bottom of the North Fork of the Flathead River.
Cattle Grazing at Sunset in Montana
Cattle graze on a ranch in western Montana.
Elk Feedgrounds
Elk grazing at a feedground in Wyoming.
Elk grazing at a feedground in Wyoming.
Grizzly Bear and Cub in Yellowstone National Park
Female grizzly bear with her young cub near the Gibbon River in Yellowstone National Park. Photo was taken in April 2016 by USGS scientist Frank van Manen.
Female grizzly bear with her young cub near the Gibbon River in Yellowstone National Park. Photo was taken in April 2016 by USGS scientist Frank van Manen.
Piegan Glacier 1938
Piegan Glacier 1938.
Shepard Glacier 1911.
Shepard Glacier 1911.
Sperry Glacier 1907
Sperry Glacier 1907.
Sperry Glacier Mid View 2008 in color.
Sperry Glacier Mid View 2008 in color.
Sperry Glacier Mid View 2008 in black and white.
Sperry Glacier Mid View 2008 in black and white.
Swiftcurrent Glacier from Trail circa 1900.
Swiftcurrent Glacier from Trail circa 1900.
Swiftcurrent Glacier from Trail 2013 in color.
Swiftcurrent Glacier from Trail 2013 in color.
Swiftcurrent Glacier from Lookout circa 1930
Swiftcurrent Glacier from Lookout circa 1930.
Hidden Lake (b) 2009.
Hidden Lake (b) 2009.
American pika eating plants.
American pika eating plants.
Piegan Glacier 1998
Piegan Glacier 1998.