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Browse images from a wide range of science topics covered by USGS. All items in this gallery are considered public domain unless otherwise noted.
A scientist and the helicopter pilot work together to install geophysical instrumentation in a remote region west of the Neacola Mountains, south-central Alaska. An array of cables were buried in shallow trenches for up to 48 hours to measure the electrical conductivity of the bedrock at that location.
A scientist and the helicopter pilot work together to install geophysical instrumentation in a remote region west of the Neacola Mountains, south-central Alaska. An array of cables were buried in shallow trenches for up to 48 hours to measure the electrical conductivity of the bedrock at that location.
USGS geologist Erin Todd examines granitic rocks in outcrop before collecting samples for geochemistry and geochronology in Lake Clark National Park, Alaska.
USGS geologist Erin Todd examines granitic rocks in outcrop before collecting samples for geochemistry and geochronology in Lake Clark National Park, Alaska.
Young Arctic Warbler with a band, Seward Peninsula, Alaska.
Young Arctic Warbler with a band, Seward Peninsula, Alaska.
Fledgling Arctic Warbler on the Seward Peninsula, Alaska. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystems Boreal-Arctic Transition Zone program.
Fledgling Arctic Warbler on the Seward Peninsula, Alaska. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystems Boreal-Arctic Transition Zone program.
Pulling in the mid-water trawl from the R/V Alaskan Gyre
Pulling in the mid-water trawl from the R/V Alaskan Gyre
R/V Alaskan Gyre in Prince William Sound, Alaska
R/V Alaskan Gyre in Prince William Sound, Alaska
Identifying and sorting clams by species. This sample came from benthic trawls on the Norseman II.
Identifying and sorting clams by species. This sample came from benthic trawls on the Norseman II.
Field camp in the Yukon-Kuskokwim Delta, western AK, where USGS and other ecologists monitor impacts of climate changes, erosion, sedimentation, and flooding on coastal ecosystems
Field camp in the Yukon-Kuskokwim Delta, western AK, where USGS and other ecologists monitor impacts of climate changes, erosion, sedimentation, and flooding on coastal ecosystems
Panoramic view of entrance to Chakachamma Lake (near Lake Clark, Alaska).
Panoramic view of entrance to Chakachamma Lake (near Lake Clark, Alaska).
Pacific walrus hauled out on sea ice in the Chukchi Sea.
Pacific walrus hauled out on sea ice in the Chukchi Sea.
An Alaska Native village on the Yukon-Kuskokwim Delta, western AK
An Alaska Native village on the Yukon-Kuskokwim Delta, western AK
Male Arctic Warbler singing on the Seward Peninsula, Alaska. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
Male Arctic Warbler singing on the Seward Peninsula, Alaska. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
Carol Damberg (USFWS) conducting survey of eelgrass (Zostera marina) in Izembek Lagoon, Alaska, 2015.
Carol Damberg (USFWS) conducting survey of eelgrass (Zostera marina) in Izembek Lagoon, Alaska, 2015.
USGS scientists Erin Todd and Jonathan Caine wait for a helicopter pickup at a geologic mapping and sampling station high in the Neacola Mountains, Alaska.
USGS scientists Erin Todd and Jonathan Caine wait for a helicopter pickup at a geologic mapping and sampling station high in the Neacola Mountains, Alaska.
USGS researcher Jonathan Caine measures vein orientation at an outcrop of late Cretaceous pluton in Lake Clark National Park.
USGS researcher Jonathan Caine measures vein orientation at an outcrop of late Cretaceous pluton in Lake Clark National Park.
American Tree Sparrow in low to medium shrub thicket habitat. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
American Tree Sparrow in low to medium shrub thicket habitat. This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
Cross-cutting relationships of at least 4 different phases of rock and high-temperature silicate fluids in a sample from the Lake Clark area.
Cross-cutting relationships of at least 4 different phases of rock and high-temperature silicate fluids in a sample from the Lake Clark area.
A Red-throated Loon swimming in a small lake on the Colville River Delta.
A Red-throated Loon swimming in a small lake on the Colville River Delta.
Biologists sorting through buckets of benthic invertebrates looking for bivalves onboard the Norseman II in the Chukchi Sea.
Biologists sorting through buckets of benthic invertebrates looking for bivalves onboard the Norseman II in the Chukchi Sea.
Wolverine weather station collects weather data near the glacier to aid mass balance. Wolverine Glacier is in the Kenai Mountains on the coast of south-central Alaska. In 1966 scientists with the USGS began making direct measurements of surface mass balance at Wolverine Glacier, one of the "benchmark glaciers" in Alaska.
Wolverine weather station collects weather data near the glacier to aid mass balance. Wolverine Glacier is in the Kenai Mountains on the coast of south-central Alaska. In 1966 scientists with the USGS began making direct measurements of surface mass balance at Wolverine Glacier, one of the "benchmark glaciers" in Alaska.
Helicopter arriving to pick up geologists after retrieving geophysical equipment from the flanks of Redoubt Volcano, Alaska, July 2015
Helicopter arriving to pick up geologists after retrieving geophysical equipment from the flanks of Redoubt Volcano, Alaska, July 2015