Lake Clark outlet
Images
Browse images from a wide range of science topics covered by USGS.
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A small flock of Sabine's Gulls
A small flock of Sabine's Gulls flying over the top of the water
A small flock of Sabine's Gulls flying over the top of the water
Tufted Puffins perching near their colony burrows on Bogoslof Island
Tufted Puffins perching near their burrows in a colony on Bogoslof Island (volcano) in the Aleutian Islands.
Tufted Puffins perching near their burrows in a colony on Bogoslof Island (volcano) in the Aleutian Islands.
Deployment of a Gravity Corer
Deployment of a gravity corer aboard USCGC Healy during an expedition to the Chukchi Sea.
Deployment of a gravity corer aboard USCGC Healy during an expedition to the Chukchi Sea.
USGS team looking at a tsunami-rafted log above Stardust Bay, Alaska
USGS Alaska Earthquake Hazards research team investigates a tsunami-rafted drift log high above sea level at Stardust Bay, Sedanka Island, Alaska.
USGS Alaska Earthquake Hazards research team investigates a tsunami-rafted drift log high above sea level at Stardust Bay, Sedanka Island, Alaska.
A degrading trough network on the Arctic Coastal Plain
A degrading trough network on the Arctic Coastal Plain.
A degrading trough network on the Arctic Coastal Plain.
Young Northern Shrike captured at a Seward Peninsula banding station
A young Northern Shrike captured at a banding station on the Seward Peninsula. This photo was taken as part Phase 1 of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
A young Northern Shrike captured at a banding station on the Seward Peninsula. This photo was taken as part Phase 1 of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
Age 1 and 0 Pacific sand lance in Prince William Sound, Alaska
Two different age classes of sand lance showing length differences and condition between fish in an age class.
Two different age classes of sand lance showing length differences and condition between fish in an age class.
Thawing ice wedges create ponds on the Arctic Coastal Plain
Thawing ice wedges create ponds on the Arctic Coastal Plain. The shape of these ponds influences how their water levels and nutrient concentrations change over the year. These variables in turn influence pond ecosystems and use by waterbirds.
Thawing ice wedges create ponds on the Arctic Coastal Plain. The shape of these ponds influences how their water levels and nutrient concentrations change over the year. These variables in turn influence pond ecosystems and use by waterbirds.
Table Top Mountain and the West Twin Creek Catchment
Table Top Mountain and the West Twin Creek catchment.
Table Top Mountain and the West Twin Creek catchment.
Using ground penetrating radar
Colin and Colby use ground penetrating radar to measure the depth to ground ice in the watershed
Colin and Colby use ground penetrating radar to measure the depth to ground ice in the watershed
Catch of forage fish from a trawl in Prince William Sound, Alaska
Catch of forage fish from a trawl in Prince William Sound, Alaska. Trawling was part of detecting long-term changes in forage fish populations.
Catch of forage fish from a trawl in Prince William Sound, Alaska. Trawling was part of detecting long-term changes in forage fish populations.
A Tufted Puffin on the water
A Tufted Puffin on the water
R/V Alaskan Gyre near a glacier in Prince William Sound, Alaska
The research vessel Alaskan Gyre is near a glacier in Prince William Sound, Alaska.
The research vessel Alaskan Gyre is near a glacier in Prince William Sound, Alaska.
Yellow Warbler in Alaska
Scientist holding an Yellow Warbler on the Seward Peninsula, Alaska. This photo is part of the Changing Arctic Ecosystems Boreal-Arctic Transition program.
Scientist holding an Yellow Warbler on the Seward Peninsula, Alaska. This photo is part of the Changing Arctic Ecosystems Boreal-Arctic Transition program.
One of two trawl winches on the R/V Alaskan Gyre
One of two trawl winches on the R/V Alaskan Gyre
One of two trawl winches on the R/V Alaskan Gyre
Stream outflow from a lake on the Arctic Coastal Plain
Stream outflow from a lake on the Arctic Coastal Plain. Surface water connectivity affects the occupancy of fish species in lakes, influencing richness, composition, and food web complexity.
Stream outflow from a lake on the Arctic Coastal Plain. Surface water connectivity affects the occupancy of fish species in lakes, influencing richness, composition, and food web complexity.
Ninespine stickleback experimental release
Ninespine stickleback experimental release. The addition of small-bodied ninespine stickleback to fishless thermokarst ponds provided valuable information on their ability to influence invertebrate prey. Through consumption, ninespine stickleback substantially reduced invertebrate biomass during the 6-week experiment.
Ninespine stickleback experimental release. The addition of small-bodied ninespine stickleback to fishless thermokarst ponds provided valuable information on their ability to influence invertebrate prey. Through consumption, ninespine stickleback substantially reduced invertebrate biomass during the 6-week experiment.
Greater white-fronted geese on the Arctic Coastal Plain
Greater white-fronted geese on the Arctic Coastal Plain
Greater white-fronted geese on the Arctic Coastal Plain
A Least and Crested Auklet on Kasatochi Volcano in 2012
A Least and Crested Auklet on Kasatochi Volcano in 2012
A Least and Crested Auklet on Kasatochi Volcano in 2012
Two Least Auklets sitting on a rock on Kasatochi Volcano
Two Least Auklets sitting on rocks on Kasatochi Volcano four years after the catastrophic eruption in 2008.
Two Least Auklets sitting on rocks on Kasatochi Volcano four years after the catastrophic eruption in 2008.