The north fork of the Agashashok River
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The north fork of the Agashashok River
The north fork of the Agashashok River
Copper River bridge
Copper River bridge longer view
A scientist dumps DNA tracer into a moulin on Wolverine Glacier
A scientist dumps DNA tracer into a moulin on Wolverine GlacierA scientist dumps DNA tracer into a moulin on Wolverine Glacier to assess water flow through the glacier as part of research aimed at understanding glacier processes.
A scientist dumps DNA tracer into a moulin on Wolverine Glacier
A scientist dumps DNA tracer into a moulin on Wolverine GlacierA scientist dumps DNA tracer into a moulin on Wolverine Glacier to assess water flow through the glacier as part of research aimed at understanding glacier processes.
Tributary of the Agashashok River
A tributary of the Agashashok River.
A tributary of the Agashashok River.
Periphyton in a tributary of the Agashashok River
Periphyton in a tributary of the Agashashok River
Periphyton in a tributary of the Agashashok River
The Agashashok River Watershed
The Agashashok River Watershed
The Agashashok River Watershed
The majestic Brooks Range in Gates of the Arctic National Park, Alaska
The majestic Brooks Range in Gates of the Arctic National Park, AlaskaThe majestic Brooks Range in Gates of the Arctic National Park, Alaska. This work is part of the Hydro-Ecology of Arctic Thawing (HEAT): Hydrology project that takes place in the Arctic Network Parks.
The majestic Brooks Range in Gates of the Arctic National Park, Alaska
The majestic Brooks Range in Gates of the Arctic National Park, AlaskaThe majestic Brooks Range in Gates of the Arctic National Park, Alaska. This work is part of the Hydro-Ecology of Arctic Thawing (HEAT): Hydrology project that takes place in the Arctic Network Parks.
Kasilof River bridge during high water
Kasilof River bridge during high water
Kasilof River bridge during high water
Studying abandoned drill core in remote Alaska
Two USGS scientists study rotary drill core that was abandoned on location at a porphyry-style copper mineral deposit in a remote part of the Yukon-Tanana upland northeast of Northway, Alaska. The core was left on site by the mineral exploration company who conducted the drilling, and it has been exposed to Alaska weather for almost a decade.
Two USGS scientists study rotary drill core that was abandoned on location at a porphyry-style copper mineral deposit in a remote part of the Yukon-Tanana upland northeast of Northway, Alaska. The core was left on site by the mineral exploration company who conducted the drilling, and it has been exposed to Alaska weather for almost a decade.
Surveying the Taan Fjord tsunami runup
USGS scientists investigate trees knocked over by the tsunami at the mouth of Taan Fjord. Flow depth here was likely 5 m based on the height of branches stripped off trees in the background. This event had the 4th highest tsunami runup ever recorded.
USGS scientists investigate trees knocked over by the tsunami at the mouth of Taan Fjord. Flow depth here was likely 5 m based on the height of branches stripped off trees in the background. This event had the 4th highest tsunami runup ever recorded.
Geologists' camp on Unga Island, Alaska
USGS geologists' camp overlooking Unga Village on Unga Island, Alaska.
USGS geologists' camp overlooking Unga Village on Unga Island, Alaska.
Collecting seismic data in Taan Fjord
USGS scientists collect seismic data to image the 2015 Taan Fjord landslide in southeast Alaska.
USGS scientists collect seismic data to image the 2015 Taan Fjord landslide in southeast Alaska.
An aerial view of a stream in the Agashashok River watershed
An aerial view of a stream in the Agashashok River watershedA stream type at the Boreal-Arctic transition of the Brooks Range, Noatak National Park and Preserve, Kobuk Valley National Park. The stream is part of the Agashashok River watershed. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
An aerial view of a stream in the Agashashok River watershed
An aerial view of a stream in the Agashashok River watershedA stream type at the Boreal-Arctic transition of the Brooks Range, Noatak National Park and Preserve, Kobuk Valley National Park. The stream is part of the Agashashok River watershed. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
A stream in the Agashashok River watershed
A stream type at the Boreal-Arctic transition of the Brooks Range, Noatak National Park and Preserve, Kobuk Valley National Park. This stream is in the Agashashok River watershed. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
A stream type at the Boreal-Arctic transition of the Brooks Range, Noatak National Park and Preserve, Kobuk Valley National Park. This stream is in the Agashashok River watershed. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
Montana River bridge
Montana River bridge
Scientist sampling a stream in the drainage of the Agashashok River
Scientist sampling a stream in the drainage of the Agashashok RiverChris Zimmerman sampling a stream in the drainage of the Agashashok River which is in the Boreal-Arctic transition of the Brooks Range in Noatak National Park and Preserve, Kobuk Valley National Park. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
Scientist sampling a stream in the drainage of the Agashashok River
Scientist sampling a stream in the drainage of the Agashashok RiverChris Zimmerman sampling a stream in the drainage of the Agashashok River which is in the Boreal-Arctic transition of the Brooks Range in Noatak National Park and Preserve, Kobuk Valley National Park. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
Sorting aquatic macroinvertebrates in the field
Three researchers from the University of Waterloo hunt for aquatic insects among the detritus scooped from the lake’s nearshore zone.
Three researchers from the University of Waterloo hunt for aquatic insects among the detritus scooped from the lake’s nearshore zone.
Scientists assemble limnocorral
Scientists assemble limnocorral at 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. Government.
Scientists assemble limnocorral at 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. Government.
Fyke net contents from a lake near Atqasuk, Alaska
Fyke net contents from a lake near Atqasuk, AlaskaContents of the fyke net that was set in the lake near Atqasuk in 2016. All sticklebacks.
Fyke net contents from a lake near Atqasuk, Alaska
Fyke net contents from a lake near Atqasuk, AlaskaContents of the fyke net that was set in the lake near Atqasuk in 2016. All sticklebacks.
A flock of Black-legged Kittiwakes foraging on small fish in the water
A flock of Black-legged Kittiwakes foraging on small fish in the waterA flock of Black-legged Kittiwakes foraging on Pacific sand lance near Gull Island.
A flock of Black-legged Kittiwakes foraging on small fish in the water
A flock of Black-legged Kittiwakes foraging on small fish in the waterA flock of Black-legged Kittiwakes foraging on Pacific sand lance near Gull Island.
Common Murres stand at the edge of their colony on Gull Island
Common Murres stand at the edge of their colony on Gull IslandCommon Murres stand at the edge of their colony on Gull Island, Cook Inlet on July 23, 2016.
Common Murres stand at the edge of their colony on Gull Island
Common Murres stand at the edge of their colony on Gull IslandCommon Murres stand at the edge of their colony on Gull Island, Cook Inlet on July 23, 2016.