USGS biologist Gretchen Roffler weighs a newborn caribou calf in Denali National Park, Alaska.
Images
Browse images from a wide range of science topics covered by USGS. All items in this gallery are considered public domain unless otherwise noted.
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USGS biologist weighs a newborn caribou calf in Alaska
USGS biologist Gretchen Roffler weighs a newborn caribou calf in Denali National Park, Alaska.
USGS scientist places radiocollar on a sedated bull caribou in Alaska
USGS scientist Layne Adams places a radiocollar on a sedated large bull caribou in Denali National Park, Alaska.
USGS scientist Layne Adams places a radiocollar on a sedated large bull caribou in Denali National Park, Alaska.
Shearing of the Melozitna Granite
Geologist and cataclastic shear zones in the Melozitna granite in the Ruby batholith. This granite contains abundant monazite and high levels of thorium and rare earth elements.
Geologist and cataclastic shear zones in the Melozitna granite in the Ruby batholith. This granite contains abundant monazite and high levels of thorium and rare earth elements.
Permafrost Loss Dramatically Changes Yukon River Chemistry and Hydrolo
Yukon River freezing up at Pilot Station, AK
Yukon River freezing up at Pilot Station, AK
Collecting permafrost information on the Tahana River
David Pelunis-Messier and Milton Roberts navigating on the Tanana River, a main tributary of the Yukon River. The two are taking part in the Yukon River permafrost study.
David Pelunis-Messier and Milton Roberts navigating on the Tanana River, a main tributary of the Yukon River. The two are taking part in the Yukon River permafrost study.
Researcher takes winter water chemistry samples on the Yukon River
Researcher Carol Hasburgh taking winter water chemistry samples on the Yukon River for a permafrost loss study.
Researcher Carol Hasburgh taking winter water chemistry samples on the Yukon River for a permafrost loss study.
Whitefish drying on a fish rack in Pilot Station, AK
Whitefish drying on a fish rack in Pilot Station, AK, in the Yukon River Basin.
Whitefish drying on a fish rack in Pilot Station, AK, in the Yukon River Basin.
Drilling to take water chemistry samples for permafrost study in the Y
Drilling to take water chemistry samples for permafrost study in the Yukon River Basin
Drilling to take water chemistry samples for permafrost study in the Yukon River Basin
Heading out to do field work for a permafrost study in the Yukon River
Heading out to do field work for a permafrost loss study in the Yukon River Basin.
Heading out to do field work for a permafrost loss study in the Yukon River Basin.
Emperor geese at the shoreline in Kodiak
Emperor geese at the shoreline in Kodiak.
Emperor geese at the shoreline in Kodiak.
A Red-breasted Nuthatch captured at an Anchorage banding station
A Red-breasted Nuthatch captured at an Anchorage banding station
A Red-breasted Nuthatch captured at an Anchorage banding station
South Cascade Glacier, northwestern Washington State
South Cascade Glacier, northwestern Washington State. South Cascade Glacier located in a north-northwest facing valley near the crest of the Cascade Range in northwest Washington state. In 1959 scientists with the USGS began collecting mass balance data on South Cascade Glacier, now one of five "benchmark glaciers" in the US.
South Cascade Glacier, northwestern Washington State. South Cascade Glacier located in a north-northwest facing valley near the crest of the Cascade Range in northwest Washington state. In 1959 scientists with the USGS began collecting mass balance data on South Cascade Glacier, now one of five "benchmark glaciers" in the US.
Female and her cub-of-the-year
Family group (adult female and cub-of-the-year) photographed in September of 2015 departing the bowhead whale bone pile near the community of Kaktovik, AK.
Family group (adult female and cub-of-the-year) photographed in September of 2015 departing the bowhead whale bone pile near the community of Kaktovik, AK.
Female and cub polar bear on land near Kaktovik, Alaska
Female and cub polar bear on land near Kaktovik, Alaska
Female and cub polar bear on land near Kaktovik, Alaska
Calving of Snow River Glacier
Calving of Snow River Glacier in early September 2015, resulted in icebergs floating in Snow River Lake.
Calving of Snow River Glacier in early September 2015, resulted in icebergs floating in Snow River Lake.
The R/V Alaskan Gyre in Harriman Fjord, Prince William Sound, Alaska
A view of the R/V Alaskan Gyre with a glacier in the background in Harriman Fjord in Prince William Sound, Alaska
A view of the R/V Alaskan Gyre with a glacier in the background in Harriman Fjord in Prince William Sound, Alaska
Helicopter landing to pick up field personnel in Alaska
Helicopter landing to pick up field personnel after a day of geologic mapping and sampling in the Fortymile region north of Tok, Alaska.
Helicopter landing to pick up field personnel after a day of geologic mapping and sampling in the Fortymile region north of Tok, Alaska.
A high alpine tributary of the Agashashok River
A high alpine tributary of the Agashashok River.
A high alpine tributary of the Agashashok River.
Mother and young caribou on Yukon-Alaska border
A mother caribou and her offspring, east of Chicken, Alaska (on the Yukon-Alaska border).
A mother caribou and her offspring, east of Chicken, Alaska (on the Yukon-Alaska border).
Scientist examining strongly deformed and metamorphosed rock outcrops
USGS scientist examining outcrops of strongly deformed and metamorphosed rock along Divide Mountain in the Yukon-Tanana upland of eastern Alaska
USGS scientist examining outcrops of strongly deformed and metamorphosed rock along Divide Mountain in the Yukon-Tanana upland of eastern Alaska
Quartz veins across outcrops of granitic gneiss on Divide Mt., Alaska
Half-meter-thick quartz veins cut across outcrops of granitic gneiss on Divide Mountain along the Alaska-Yukon border, August 2015
Half-meter-thick quartz veins cut across outcrops of granitic gneiss on Divide Mountain along the Alaska-Yukon border, August 2015