A Bald Eagle flies off with a Black-legged Kittiwake, Alaska
A Bald Eagle flies off with a Black-legged Kittiwake, AlaskaA Bald Eagle flies off with a Black-legged Kittiwake from a colony on Gull Island in Kachemak Bay, 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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A Bald Eagle flies off with a Black-legged Kittiwake, Alaska
A Bald Eagle flies off with a Black-legged Kittiwake, Alaska
A Bald Eagle flies off with a Black-legged Kittiwake, AlaskaA Bald Eagle flies off with a Black-legged Kittiwake from a colony on Gull Island in Kachemak Bay, Alaska
A Bald Eagle flies off with a Black-legged Kittiwake
A Bald Eagle flies off with a Black-legged KittiwakeA Bald Eagle flies off with a Black-legged Kittiwake from Gull Island in Kachemak Bay, Alaska
A Bald Eagle flies off with a Black-legged Kittiwake
A Bald Eagle flies off with a Black-legged KittiwakeA Bald Eagle flies off with a Black-legged Kittiwake from Gull Island in Kachemak Bay, Alaska
Filtering phytoplankton from lake water
Phytoplankton is filtered from lake water for analysis of mercury content. Photo courtesy of U.S. National Park Service, Public Domain.
Phytoplankton is filtered from lake water for analysis of mercury content. Photo courtesy of U.S. National Park Service, Public Domain.
Water collection, Alaska
Biologist collects water from a lake in Lake Clark National Park. Photo courtesy of U.S. National Park Service, Public Domain.
Biologist collects water from a lake in Lake Clark National Park. Photo courtesy of U.S. National Park Service, Public Domain.
Juvenile sockeye salmon, Alaska
Juvenile sockeye salmon (Oncorhynchus nerka) captured in Lake Clark National Park as part of a study examining mercury in lake food webs.
Juvenile sockeye salmon (Oncorhynchus nerka) captured in Lake Clark National Park as part of a study examining mercury in lake food webs.
Scientist holding lake trout
Lake trout (Salvelinus namaycush). Lake trout captured in Lake Clark National Park as part of a study to examine mercury biomagnification in lake food webs. Photo courtesy of U.S. National Park Service, Public Domain
Lake trout (Salvelinus namaycush). Lake trout captured in Lake Clark National Park as part of a study to examine mercury biomagnification in lake food webs. Photo courtesy of U.S. National Park Service, Public Domain
Caribou eating tussock cottongrass heads
Adult female caribou in the Porcupine herd equipped with a GPS-enabled video camera collar that shows the caribou’s point-of-view while consuming Eriophorum vaginatum (tussock cottongrass) heads within the coastal plain of the USFWS Arctic National Wildlife Refuge.
Adult female caribou in the Porcupine herd equipped with a GPS-enabled video camera collar that shows the caribou’s point-of-view while consuming Eriophorum vaginatum (tussock cottongrass) heads within the coastal plain of the USFWS Arctic National Wildlife Refuge.
Streamflow discharge measurement at Solomon Gulch Tailrace, Valdez, Alaska
Streamflow discharge measurement at Solomon Gulch Tailrace, Valdez, AlaskaUSGS staff measuring streamflow at the Solomon Gulch Tailrace with a tethered Acoustic Doppler Current Profiler. This is one of 12 streamgages that the USGS Alaska Science Center operates in cooperation with hydropower providers across Alaska. Data are used for operation, regulation, and planning purposes.
Streamflow discharge measurement at Solomon Gulch Tailrace, Valdez, Alaska
Streamflow discharge measurement at Solomon Gulch Tailrace, Valdez, AlaskaUSGS staff measuring streamflow at the Solomon Gulch Tailrace with a tethered Acoustic Doppler Current Profiler. This is one of 12 streamgages that the USGS Alaska Science Center operates in cooperation with hydropower providers across Alaska. Data are used for operation, regulation, and planning purposes.
Solomon Gulch
USGS staff measuring discharge at the Solomon Gulch Hydropower tailrace, Valdez Alaska.
USGS staff measuring discharge at the Solomon Gulch Hydropower tailrace, Valdez Alaska.
Searching for landbird nests in Denali National Park
Searching for landbird nests in Denali National ParkUSGS biologists Steve Matsuoka, Lauren Hitt, and Rachel Richardson search for landbird nests in Denali National Park.
Searching for landbird nests in Denali National Park
Searching for landbird nests in Denali National ParkUSGS biologists Steve Matsuoka, Lauren Hitt, and Rachel Richardson search for landbird nests in Denali National Park.
Female sea otter, Cook Inlet, Alaska
A female sea otter resting in the morning light in Cook Inlet Alaska.
A female sea otter resting in the morning light in Cook Inlet Alaska.
Two juvenile coho salmon used in a heat stress experiment
Two juvenile coho salmon used in a heat stress experimentTwo juvenile coho salmon (Oncorhynchus kisutch) used in a heat stress experiment. Alaska Department of Fish and Game’s William Jack Hernandez Sport Fish Hatchery, Anchorage, Alaska, USA.
Two juvenile coho salmon used in a heat stress experiment
Two juvenile coho salmon used in a heat stress experimentTwo juvenile coho salmon (Oncorhynchus kisutch) used in a heat stress experiment. Alaska Department of Fish and Game’s William Jack Hernandez Sport Fish Hatchery, Anchorage, Alaska, USA.
Scientist with data notebook
Scientist uses radio-echo-sounding to study firn compaction on Wolverine Glacier, Alaska. Radio-echo sounding (RES) is a technique used by glaciologists to measure the internal structure, ice thickness and sub-ice morphology of glaciers. This tool is equivalent to X-rays for the medical profession and the physicists.
Scientist uses radio-echo-sounding to study firn compaction on Wolverine Glacier, Alaska. Radio-echo sounding (RES) is a technique used by glaciologists to measure the internal structure, ice thickness and sub-ice morphology of glaciers. This tool is equivalent to X-rays for the medical profession and the physicists.
A researcher gazes across Wolverine Glacier and the surrounding snow-covered mountains
A researcher gazes across Wolverine Glacier and the surrounding snow-covered mountainsA researcher gazes across Wolverine Glacier and the surrounding snow-covered mountains during an early spring visit to collect mass balance data.
A researcher gazes across Wolverine Glacier and the surrounding snow-covered mountains
A researcher gazes across Wolverine Glacier and the surrounding snow-covered mountainsA researcher gazes across Wolverine Glacier and the surrounding snow-covered mountains during an early spring visit to collect mass balance data.
Icy Alsek River in winter
Randy Host preparing to sample discharge and collect water quality samples on an icy Alsek River in winter.
Randy Host preparing to sample discharge and collect water quality samples on an icy Alsek River in winter.
Unuk River Layout
Illustration detailing the Unuk River layout. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
Illustration detailing the Unuk River layout. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
Salmon River Layout
Illustration detailing the Salmon River layout. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
Illustration detailing the Salmon River layout. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
Alsek River Layout
Illustration detailing the Alsek River layout. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
Illustration detailing the Alsek River layout. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
Taku River Layout
Illustration detailing the Taku River layout. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
Illustration detailing the Taku River layout. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
Stikine River Layout
Illustration detailing the Stikine River layout. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
Illustration detailing the Stikine River layout. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
USGS Alaska Transboundary Rivers DEM
USGS Alaska Transboundary Rivers DEM. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
USGS Alaska Transboundary Rivers DEM. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.