Nathan Chellman, Mike Jayred and Lucas (Dog) stage equipment on the drilling platform.
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Researchers Preparing to Drill in an Ice Patch
Nathan Chellman, Mike Jayred and Lucas (Dog) stage equipment on the drilling platform.
Researchers Starting the Ice Core
Mike Jayred and Nathan Chellman work to level the ice drill to begin taking the core. Craig Lee stabilizes the platform.
Mike Jayred and Nathan Chellman work to level the ice drill to begin taking the core. Craig Lee stabilizes the platform.
Researchers Drilling the top meter of the Ice Patch
Mike Jayred runs the drill while Greg Pederson stabilizies the outer barrel. Craig Lee and Danny Stahle wait to assist with extraction of the first meter of ice.
Mike Jayred runs the drill while Greg Pederson stabilizies the outer barrel. Craig Lee and Danny Stahle wait to assist with extraction of the first meter of ice.
Researchers Drilling the top meter of the Ice Patch
Mike Jayred runs the drill while Greg Pederson stabilizies the outer barrel. Craig Lee and Danny Stahle wait to assist with extraction of the first meter of ice.
Mike Jayred runs the drill while Greg Pederson stabilizies the outer barrel. Craig Lee and Danny Stahle wait to assist with extraction of the first meter of ice.
Bottom of the Ice Core
Craig Lee holds the ice drill with the end of the first ice core segment exposed. The sample will next be measured, logged, and processed in the field.
Craig Lee holds the ice drill with the end of the first ice core segment exposed. The sample will next be measured, logged, and processed in the field.
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.
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
Craig Lee and Mike Jayred scout a potential drilling location for extracting an ice core.
Craig Lee and Mike Jayred scout a potential drilling location for extracting an ice core.
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 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.
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.
Sperry Glacier NE 1913.
Sperry Glacier NE 1913.
Sperry Glacier NE 2007 in color.
Sperry Glacier NE 2007 in color.
Sperry Glacier NE 2007 in color.
Sperry Glacier NE 2007 in black and white.
Sperry Glacier NE 2007 in black and white.
Sperry Glacier NE 2007 in black and white.
American pika eating plants.
American pika eating plants.
American pika eating plants.
Piegan Glacier 1938
Piegan Glacier 1938.
Piegan Glacier 1998
Piegan Glacier 1998.