A USGS scientist is recording structural measurements collected from an outcrop of deformed and metamorphosed bedrock in the Yukon-Tanana upland of eastern interior Alaska. A team of two geologists were deployed by helicopter to conduct a geologic mapping and sampling traverse covering approximately 5 miles along the top of this ridge.
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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.
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Geologic mapping in remote interior Alaska
A USGS scientist is recording structural measurements collected from an outcrop of deformed and metamorphosed bedrock in the Yukon-Tanana upland of eastern interior Alaska. A team of two geologists were deployed by helicopter to conduct a geologic mapping and sampling traverse covering approximately 5 miles along the top of this ridge.
Scientists in kayaks next to floating limnocorral
Two scientists in kayaks next to a floating limnocorral on McKinley Lake, near Cordova, Alaska for Elodea spp. experiment. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems. Disclaimer statement: Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S.
Two scientists in kayaks next to a floating limnocorral on McKinley Lake, near Cordova, Alaska for Elodea spp. experiment. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems. Disclaimer statement: Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S.
Skinny Common Murre with keel protruding (second from the left)
Skinny Common Murre with keel protruding (second from the left)Skinny Common Murre with keel protruding (second from the left) contrasted by normal murres. Lower Cook Inlet, Alaska.
Skinny Common Murre with keel protruding (second from the left)
Skinny Common Murre with keel protruding (second from the left)Skinny Common Murre with keel protruding (second from the left) contrasted by normal murres. Lower Cook Inlet, Alaska.
USGS on the Colville River Delta, Alaska
Alaska Native Science and Engineer Program (ANSEP) student and USGS intern Parker Pickett on the Colville River Delta, Alaska, helping to band molting snow geese and black brant.
Alaska Native Science and Engineer Program (ANSEP) student and USGS intern Parker Pickett on the Colville River Delta, Alaska, helping to band molting snow geese and black brant.
A Black-legged Kittiwake harasses a melanistic Common Murre
A Black-legged Kittiwake harasses a melanistic Common MurreA Black-legged Kittiwake harasses a melanistic (all black) Common Murre, forcing it off its breeding site in Kachemak Bay, Alaska, 2018. See related paper published in the Marine Ornithology: Journal of Seabird Research and Conservation at: http://www.marineornithology.org/PDF/50_2/50_2_225-22
A Black-legged Kittiwake harasses a melanistic Common Murre
A Black-legged Kittiwake harasses a melanistic Common MurreA Black-legged Kittiwake harasses a melanistic (all black) Common Murre, forcing it off its breeding site in Kachemak Bay, Alaska, 2018. See related paper published in the Marine Ornithology: Journal of Seabird Research and Conservation at: http://www.marineornithology.org/PDF/50_2/50_2_225-22
Before and after views of Kasatochi Volcano's eruption of 2008
Before and after views of Kasatochi Volcano's eruption of 2008Before and after views of Kasatochi Volcano's eruption of 2008
Before and after views of Kasatochi Volcano's eruption of 2008
Before and after views of Kasatochi Volcano's eruption of 2008Before and after views of Kasatochi Volcano's eruption of 2008
Glaucous-winged Gulls grab eggs abandoned by breeding Common Murres
Glaucous-winged Gulls grab eggs abandoned by breeding Common MurresGlaucous-winged Gulls capitalize upon a disturbance at the Gull Island colony in 2018 to grab eggs abandoned by breeding Common Murres. One lone Common Murre continues incubation despite the rest of the colony flushing.
Glaucous-winged Gulls grab eggs abandoned by breeding Common Murres
Glaucous-winged Gulls grab eggs abandoned by breeding Common MurresGlaucous-winged Gulls capitalize upon a disturbance at the Gull Island colony in 2018 to grab eggs abandoned by breeding Common Murres. One lone Common Murre continues incubation despite the rest of the colony flushing.
Melanistic Common Murre flies near its colony
A melanistic (all dark) Common Murre flies above its colony on Gull Island in Kachemak Bay, Alaska, 2018. See related paper published in the Marine Ornithology: Journal of Seabird Research and Conservation at: http://www.marineornithology.org/PDF/50_2/50_2_225-227.pdf.
A melanistic (all dark) Common Murre flies above its colony on Gull Island in Kachemak Bay, Alaska, 2018. See related paper published in the Marine Ornithology: Journal of Seabird Research and Conservation at: http://www.marineornithology.org/PDF/50_2/50_2_225-227.pdf.
Geneticist preparing environmental samples containing Elodea species
Geneticist preparing environmental samples containing Elodea speciesDr. Damian Menning, Geneticist with the USGS Alaska Science Center, preparing environmental samples containing Elodea species to test universal eDNA Elodea sp. primers that can be used to detect all five Elodea sp. in aquatic samples.
Geneticist preparing environmental samples containing Elodea species
Geneticist preparing environmental samples containing Elodea speciesDr. Damian Menning, Geneticist with the USGS Alaska Science Center, preparing environmental samples containing Elodea species to test universal eDNA Elodea sp. primers that can be used to detect all five Elodea sp. in aquatic samples.
Damian Menning preparing eDNA Elodea samples
Dr. Damian Menning, Geneticist with the USGS Alaska Science Center, preparing environmental samples containing Elodea species to test universal eDNA Elodea species primers that can be used to detect all five Elodea sp. in aquatic samples.
Dr. Damian Menning, Geneticist with the USGS Alaska Science Center, preparing environmental samples containing Elodea species to test universal eDNA Elodea species primers that can be used to detect all five Elodea sp. in aquatic samples.
Common Murre flying in lower Cook Inlet, Alaska
Common Murre flying in lower Cook Inlet, Alaska.
Common Murre flying in lower Cook Inlet, Alaska.
Juvenile Bald Eagle flies away with Black-legged Kittiwake chick
Juvenile Bald Eagle flies away with Black-legged Kittiwake chickA juvenile Bald Eagle flies away with a young Black-legged Kittiwake chick taken from its nest at Gull Island, Alaska.
Juvenile Bald Eagle flies away with Black-legged Kittiwake chick
Juvenile Bald Eagle flies away with Black-legged Kittiwake chickA juvenile Bald Eagle flies away with a young Black-legged Kittiwake chick taken from its nest at Gull Island, Alaska.
A Northern Fulmar flying in Lower Cook Inlet, Alaska
A Northern Fulmar flying in Lower Cook Inlet, AlaskaNorthern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.
A Northern Fulmar flying in Lower Cook Inlet, Alaska
A Northern Fulmar flying in Lower Cook Inlet, AlaskaNorthern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.
A Northern Fulmar on the water in Lower Cook Inlet
A Northern Fulmar on the water in Lower Cook InletNorthern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.
A Northern Fulmar on the water in Lower Cook Inlet
A Northern Fulmar on the water in Lower Cook InletNorthern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.
A Northern Fulmar on the water offshore of Anchor Point, Cook Inlet
A Northern Fulmar on the water offshore of Anchor Point, Cook InletA Northern Fulmar on the water offshore of Anchor Point, Cook Inlet on July 18, 2018.
A Northern Fulmar on the water offshore of Anchor Point, Cook Inlet
A Northern Fulmar on the water offshore of Anchor Point, Cook InletA Northern Fulmar on the water offshore of Anchor Point, Cook Inlet on July 18, 2018.
Rainbow on the Taku River
Heading upriver in the USGS boat.
Heading upriver in the USGS boat.
Scientists deploy a mid-water trawl
USGS scientists Mayumi Arimitsu and John Piatt deploy a mid-water trawl to collect forage fish and zooplankton in Cook Inlet, Alaska.
USGS scientists Mayumi Arimitsu and John Piatt deploy a mid-water trawl to collect forage fish and zooplankton in Cook Inlet, Alaska.
Scientists process catch from a mid-water trawl
USGS scientists John Piatt and Mayumi Arimitsu process the catch from a mid-water trawl to collect forage fish and zooplankton in Cook Inlet, Alaska.
USGS scientists John Piatt and Mayumi Arimitsu process the catch from a mid-water trawl to collect forage fish and zooplankton in Cook Inlet, Alaska.
USGS ecologists map monitor vegetation and landscape characteristics
USGS ecologists map monitor vegetation and landscape characteristicsUSGS ecologists map and monitor vegetation and landscape characteristics at long-term ecological monitoring sites on the Yukon-Kuskokwim Delta, AK
USGS ecologists map monitor vegetation and landscape characteristics
USGS ecologists map monitor vegetation and landscape characteristicsUSGS ecologists map and monitor vegetation and landscape characteristics at long-term ecological monitoring sites on the Yukon-Kuskokwim Delta, AK
Female Pribilof rock sandpiper, St. Matthew Island, Bering Sea
Female Pribilof rock sandpiper, St. Matthew Island, Bering SeaIn 2018, biologists conducted a second population survey to reassess the population status and habitat associations of Pribilof rock sandpipers breeding on St. Matthew and Hall Islands in the Bering Sea, Alaska. Previous work estimated the population size at approximately 19,800 birds (Ruthrauff et al. 2012).
Female Pribilof rock sandpiper, St. Matthew Island, Bering Sea
Female Pribilof rock sandpiper, St. Matthew Island, Bering SeaIn 2018, biologists conducted a second population survey to reassess the population status and habitat associations of Pribilof rock sandpipers breeding on St. Matthew and Hall Islands in the Bering Sea, Alaska. Previous work estimated the population size at approximately 19,800 birds (Ruthrauff et al. 2012).
Bull Seal Point on St. Matthew Island, Alaska
Bull Seal Point on St. Matthew Island, Alaska.
Bull Seal Point on St. Matthew Island, Alaska.