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Alaska Region

USGS in Alaska conducts science for decision-making in five major areas: natural hazards; energy & minerals; water quality, streamflow & ice; wildlife, fish & habitat; and geospatial mapping. The Alaska Regional Office provides management and strategic coordination among the Alaska Science Center, the Volcano Science Center, & other partners operating in AK.

News

U.S. Geological Survey marks progress tracking nation's supply of critical minerals

U.S. Geological Survey marks progress tracking nation's supply of critical minerals

USGS invests $3.6 million in Bipartisan Infrastructure Law funding to map critical minerals across Alaska

USGS invests $3.6 million in Bipartisan Infrastructure Law funding to map critical minerals across Alaska

Revisiting the 1957 Aleutian Earthquake: New Insights into Tsunami Hazards for Hawaiʻi

Revisiting the 1957 Aleutian Earthquake: New Insights into Tsunami Hazards for Hawaiʻi

Publications

Selected special conditions affecting peak streamflow and extreme floods in Alaska through water year 2022 Selected special conditions affecting peak streamflow and extreme floods in Alaska through water year 2022

The U.S. Geological Survey, in cooperation with the Alaska Department of Transportation and Public Facilities, inventoried selected special conditions for annual peak flows and identified extreme floods at streamgages in Alaska through water year 2022 to facilitate hydrologic analysis. Special conditions identified from U.S. Geological Survey gaging records and basin characteristics...
Authors
Janet H. Curran

Identifying presence or absence of grizzly and polar bear cubs from the movements of adult females with machine learning Identifying presence or absence of grizzly and polar bear cubs from the movements of adult females with machine learning

BackgroundInformation on reproductive success is crucial to understanding population dynamics but can be difficult to obtain, particularly for species that birth while denning. For grizzly (Ursus arctos) and polar bears (U. maritimus), den visits are impractical because of safety and logistical considerations. Reproduction is typically documented through direct observation, which can be...
Authors
Erik Andersen, Justin Clapp, Milan Vinks, Todd C. Atwood, Daniel D. Bjornlie, Cecily M. Costello, David Gustine, Mark A. Haroldson, Lori L. Roberts, Karyn D. Rode, Frank T. van Manen, Ryan H. Wilson

Arctic speleothems reveal nearly permafrost-free Northern Hemisphere in the Late Miocene Arctic speleothems reveal nearly permafrost-free Northern Hemisphere in the Late Miocene

Arctic warming is happening at nearly four times the global average rate. Long-term trends of permafrost dynamics cannot be estimated directly from monitoring of present-day thaw processes, requiring paleoclimate-proxy information. Here we use cave carbonates (speleothems) from a northern Siberian cave to determine when the Northern Hemisphere was mostly permafrost-free. At present...
Authors
Anton Vaks, Andrew Mason, Sebastian F.M. Breitenbach, Alena Maria Giesche, Alexander Osinzev, Irina Adrian, Aleksandr Kononov, Stuart Umbo, Franziska A. Lechleitner, Marcelo Rosensaft, Gideon M. Henderson

Science

Tracking Data for Marbled Murrelet (Brachyramphus marmoratus)

Available here are tracking data for the Marbled Murrelet, a seabird species that forages in coastal marine waters and nests in old-growth forests of Alaska, Canada, and the western United States.
Tracking Data for Marbled Murrelet (Brachyramphus marmoratus)

Tracking Data for Marbled Murrelet (Brachyramphus marmoratus)

Available here are tracking data for the Marbled Murrelet, a seabird species that forages in coastal marine waters and nests in old-growth forests of Alaska, Canada, and the western United States.
Learn More

Tracking Data for Black Brant (Branta bernicla nigricans)

Available here are tracking data for the Black Brant, a goose species that breeds in coastal areas of Alaska, northwestern Canada, and northeastern Russia and winters along coastal areas of North America from western Alaska to Mexico.
Tracking Data for Black Brant (Branta bernicla nigricans)

Tracking Data for Black Brant (Branta bernicla nigricans)

Available here are tracking data for the Black Brant, a goose species that breeds in coastal areas of Alaska, northwestern Canada, and northeastern Russia and winters along coastal areas of North America from western Alaska to Mexico.
Learn More

Streambed Scour at Bridges in Alaska

Streambed scour is the leading cause of bridge failure in the United States resulting in over 60 percent of all failures. The Alaska Science Center, in cooperation with the Alaska Department of Transportation and Public Facilities and the Alaska Railroad, is researching streambed scour through scour monitoring, hydraulic modeling, and data collection during high flows.
Streambed Scour at Bridges in Alaska

Streambed Scour at Bridges in Alaska

Streambed scour is the leading cause of bridge failure in the United States resulting in over 60 percent of all failures. The Alaska Science Center, in cooperation with the Alaska Department of Transportation and Public Facilities and the Alaska Railroad, is researching streambed scour through scour monitoring, hydraulic modeling, and data collection during high flows.
Learn More
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