Landscape view of an un-named glacier off the Sargent Icefield, directly across from Wolverine Glacier, above the Nellie Juan River, in Alaska. Taken during a visit to a wolverine glacier field site as part of a study to examine how alpine areas are changing as temperatures rise in Alaska.
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Glacier off Sargent Icefield
Landscape view of an un-named glacier off the Sargent Icefield, directly across from Wolverine Glacier, above the Nellie Juan River, in Alaska. Taken during a visit to a wolverine glacier field site as part of a study to examine how alpine areas are changing as temperatures rise in Alaska.
Fish Creek Watershed in the National Petroleum Reserve-Alaska
Fish Creek Watershed in the National Petroleum Reserve-AlaskaFish Creek wanders through the National Petroleum Reserve-Alaska, a 22.8 million acre region managed by the Bureau of Land Management on Alaska's North Slope. USGS has periodically assessed oil and gas resource potential there. These assessments can be found here.
Fish Creek Watershed in the National Petroleum Reserve-Alaska
Fish Creek Watershed in the National Petroleum Reserve-AlaskaFish Creek wanders through the National Petroleum Reserve-Alaska, a 22.8 million acre region managed by the Bureau of Land Management on Alaska's North Slope. USGS has periodically assessed oil and gas resource potential there. These assessments can be found here.
Water Quality Monitoring and Sampling on the Unuk River, Alaska
Water Quality Monitoring and Sampling on the Unuk River, AlaskaUSGS hydrologist monitoring water quality and collecting samples at USGS Station15015595 on the Unuk River, Alaska. In 2019, the USGS began studying the baseline water-quality of selected transboundary rivers in Alaska.
Water Quality Monitoring and Sampling on the Unuk River, Alaska
Water Quality Monitoring and Sampling on the Unuk River, AlaskaUSGS hydrologist monitoring water quality and collecting samples at USGS Station15015595 on the Unuk River, Alaska. In 2019, the USGS began studying the baseline water-quality of selected transboundary rivers in Alaska.
Emperor geese near Kodiak.
Emperor geese gathered near the shoreline on Kodiak Island.
Emperor geese gathered near the shoreline on Kodiak Island.
Examining bucket of seafloor sediment collected off southeast Alaska
Examining bucket of seafloor sediment collected off southeast AlaskaUSGS research geophysicist Danny Brothers (right) and colleagues examine the surface of a sediment grab sample just pulled onto the deck of the Canadian Coast Guard Ship John P. Tully. The sample was collected from the top of a mud volcano north of the border between southeast Alaska and British Columbia.
Examining bucket of seafloor sediment collected off southeast Alaska
Examining bucket of seafloor sediment collected off southeast AlaskaUSGS research geophysicist Danny Brothers (right) and colleagues examine the surface of a sediment grab sample just pulled onto the deck of the Canadian Coast Guard Ship John P. Tully. The sample was collected from the top of a mud volcano north of the border between southeast Alaska and British Columbia.
Sampling core fluid from sediment cores collected off southeast Alaska
Sampling core fluid from sediment cores collected off southeast AlaskaMary McGann (left, USGS) and Rachel Lauer (University of Calgary) sample pore fluids from sediment cores collected aboard the Canadian Coast Guard Ship John P. Tully along the Queen Charlotte-Fairweather fault offshore of southeast Alaska.
Sampling core fluid from sediment cores collected off southeast Alaska
Sampling core fluid from sediment cores collected off southeast AlaskaMary McGann (left, USGS) and Rachel Lauer (University of Calgary) sample pore fluids from sediment cores collected aboard the Canadian Coast Guard Ship John P. Tully along the Queen Charlotte-Fairweather fault offshore of southeast Alaska.
Tazlina River sonar
Tazlina River sonar
Salcha River sonar near Salchaket
Salcha River sonar near Salchaket
Salcha River sonar near Salchaket
Unnamed stream and beaver pond in the Taiya River floodplain
Unnamed stream and beaver pond in the Taiya River floodplainUnnamed stream and beaver pond in the Taiya River floodplain
Unnamed stream and beaver pond in the Taiya River floodplain
Unnamed stream and beaver pond in the Taiya River floodplainUnnamed stream and beaver pond in the Taiya River floodplain
Thawing Peatlands, Alaska
Cores were collected from various areas of thawing permafrost-peatlands in Alaska. Permafrost thaw results in ground subsidence and inundation that kills black spruce and other understory plants living on the permafrost plateau.
Cores were collected from various areas of thawing permafrost-peatlands in Alaska. Permafrost thaw results in ground subsidence and inundation that kills black spruce and other understory plants living on the permafrost plateau.
Glacier Creek sonar on a bridge
Glacier Creek sonar
Pacific Golden-Plover on the shore near Big Creek near Egegik, Alaska
Pacific Golden-Plover on the shore near Big Creek near Egegik, AlaskaPacific Golden-Plover on the shore near Big Creek, Alaska.
Pacific Golden-Plover on the shore near Big Creek near Egegik, Alaska
Pacific Golden-Plover on the shore near Big Creek near Egegik, AlaskaPacific Golden-Plover on the shore near Big Creek, Alaska.
Black-bellied Plover on the mud shore of Big Creek near Egegik, Alaska
Black-bellied Plover on the mud shore of Big Creek near Egegik, AlaskaBlack-bellied Plover on the mud shore of Big Creek, Alaska.
Black-bellied Plover on the mud shore of Big Creek near Egegik, Alaska
Black-bellied Plover on the mud shore of Big Creek near Egegik, AlaskaBlack-bellied Plover on the mud shore of Big Creek, Alaska.
Common Murres in a colony in Cook Inlet, Alaska in 2017
Common Murres in a colony in Cook Inlet, Alaska in 2017Common Murres in a colony in Cook Inlet, Alaska in 2017
Common Murres in a colony in Cook Inlet, Alaska in 2017
Common Murres in a colony in Cook Inlet, Alaska in 2017Common Murres in a colony in Cook Inlet, Alaska in 2017
Black-legged Kittiwakes in a colony in Cook Inlet, Alaska
Black-legged Kittiwakes in a colony in Cook Inlet, AlaskaBlack-legged Kittiwakes in a colony in Cook Inlet, Alaska. One bird on a nest.
Black-legged Kittiwakes in a colony in Cook Inlet, Alaska
Black-legged Kittiwakes in a colony in Cook Inlet, AlaskaBlack-legged Kittiwakes in a colony in Cook Inlet, Alaska. One bird on a nest.
Common Murres in their colony in Cook Inlet, Alaska
Common Murres in their colony in Cook Inlet, AlaskaCommon Murres in their colony in Cook Inlet, Alaska
Common Murres in their colony in Cook Inlet, Alaska
Common Murres in their colony in Cook Inlet, AlaskaCommon Murres in their colony in Cook Inlet, Alaska
The catch from a fyke net set near Kaktovik, Alaska
The catch from a fyke net set near Kaktovik, AlaskaBiologists identify species, count, measure length, and release thousands of fish each year to understand how fish use nearshore habitats.
The catch from a fyke net set near Kaktovik, Alaska
The catch from a fyke net set near Kaktovik, AlaskaBiologists identify species, count, measure length, and release thousands of fish each year to understand how fish use nearshore habitats.
Underwater image of fish captured by a fyke net
An underwater image of fish captured by a fyke net near Kaktovik, Alaska, Beaufort Sea, USA. The small silver fish with dark backs are young-of-year (age-0) Arctic cisco (Coregonus autumnalis) and the flatfish are Arctic flounder (Liopsetta glacialis).
An underwater image of fish captured by a fyke net near Kaktovik, Alaska, Beaufort Sea, USA. The small silver fish with dark backs are young-of-year (age-0) Arctic cisco (Coregonus autumnalis) and the flatfish are Arctic flounder (Liopsetta glacialis).
A fyke net set to catch nearshore fish near Kaktovik, Alaska
A fyke net set to catch nearshore fish near Kaktovik, AlaskaA fyke net or fish trap used for continuous sampling of nearshore fish in shallow waters. Fish swimming along the beach are stopped by a small-mesh net that guides them in to one of these two underwater fish traps that are set side by side. Researchers visit nets at least once a day to identify, count, and release fish.
A fyke net set to catch nearshore fish near Kaktovik, Alaska
A fyke net set to catch nearshore fish near Kaktovik, AlaskaA fyke net or fish trap used for continuous sampling of nearshore fish in shallow waters. Fish swimming along the beach are stopped by a small-mesh net that guides them in to one of these two underwater fish traps that are set side by side. Researchers visit nets at least once a day to identify, count, and release fish.
Small arctic grayling in the Imelyak River, Brooks Range
Small arctic grayling in the Imelyak River, Brooks RangeSmall arctic grayling hugging the bottom in the Imelyak River in the Brooks Range. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
Small arctic grayling in the Imelyak River, Brooks Range
Small arctic grayling in the Imelyak River, Brooks RangeSmall arctic grayling hugging the bottom in the Imelyak River in the Brooks Range. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
Sampling the Imelyak River in the Brooks Range
Sampling the Imelyak River 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-Ecology of Arctic Thawing (HEAT) project.
Sampling the Imelyak River 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-Ecology of Arctic Thawing (HEAT) project.