Unified Interior Regions

Alaska

States L2 Landing Page Tabs

Filter Total Items: 195
Wooden boat rests along a muddy coastline on a bluff, bluff is crumbling onto beach in foreground, building sits in background.
Date Published: June 17, 2019
Status: Active

Climate Change on U.S. Arctic Ocean Margins

Arctic Alaska is warming faster than the rest of the United States. A major consequence of this warming is permafrost thaw, which threatens infrastructure, alters habitat, increases fire risk, changes nutrient and sediment delivery to the coastal ocean, and enhances greenhouse gas release. The warming climate has already dramatically reduced the thickness and annual duration of sea ice,...

Boat on the water near a glacier
Date Published: June 17, 2019
Status: Active

Landslide-Induced Tsunamis of Southern Alaska

Working with partners to study and inform the Nation about geohazard risks

Small silver metal boat with USGS lettering on the side, water is splashing up on the side and a small wake is formed.
Date Published: June 3, 2019
Status: Active

PCMSC Marine Facility (Marfac)

Marfac is the operational arm of the Pacific Coastal and Marine Science Center. The Marine Facility staff provides mechanical and electronics expertise for field operations along the coast, in the nearshore environment, and in the deeper waters of the ocean.

Contacts: Timothy Elfers
Canning River with bars view
Date Published: May 6, 2019
Status: Active

Winter Habitat of Juvenile Dolly Varden in the Canning River

In the Arctic, rivers often freeze all the way to the bottom each winter leaving fish with limited habitat where they can survive. 

A man stands smiling on a high coastal bluff near solar panels and a pole supported by guy wires, with a camera mounted on top.
Date Published: April 24, 2019
Status: Active

Climate impacts to Arctic coasts, recent activities

New instruments installed to measure Arctic coastal erosion; community outreach event held

Contacts: Li Erikson
Flat spot in 2D seismic line.
Date Published: April 20, 2019
Status: Active

Geophysical Analysis of Energy Resources

The Geophysical Analysis of Energy Resources Project (also called the Geophysical Analysis Project) meets the need within the USGS and the Energy Resources Program to conduct advanced theoretical and applied research in reflection seismology to improve the delineation and characterization of both conventional and unconventional hydrocarbon resources. The scientists of the project fulfill these...

A man stands smiling on a high coastal bluff near solar panels and a pole supported by guy wires, with a camera mounted on top.
Date Published: April 1, 2019
Status: Completed

Using Video Imagery to Study Coastal Change: Barter Island, Alaska

For a short study period, two video cameras overlooked the coast from atop the coastal bluff of Barter Island in northern Alaska. The purpose was to observe and quantify coastal processes such as wave run-up, development of rip channels, bluff erosion, and movement of sandbars and ice floes.

Read more about our Arctic research projects:

...

A technician sits at a microscope to identify macrofossils
Date Published: March 7, 2019
Status: Active

Macrofossil and Sediment Processing Laboratory

In the Macrofossil and sediment processing lab we analyze the physical, biological, and geochemical characteristics of peat and sediment samples collected from lake, wetland, and peat cores as proxies for past changes to these depositional environments on timescales of decades to millennia. We primarily study terrestrial wetland ecosystems from subtropical to arctic regions in order to...

Image: Denali Fault
Date Published: February 1, 2019
Status: Active

Alaska Earthquake and Tsunami Hazards

Alaska has more large earthquakes than the rest of the United States combined. More than three-quarters of the state’s population live in an area that can experience a magnitude 7 earthquake. Our research provides objective science that helps stakeholders prepare for and mitigate the effects of future earthquakes and tsunamis, which bolsters the economic health and well-being of Alaska and the...

Flames consume woody fuels in a managed wildfire, New Mexico
Date Published: December 20, 2018
Status: Active

Ecosystems on the Edge: Landscape and Fire Ecology of Forests, Deserts, and Tundra

Climate changes and interacting disturbances such as wildfires, insect and disease outbreaks, and erosion and flooding can perturb and reorganize ecosystems.

A boreal bog surrounded by grasses and plants with the sun setting in the background
Date Published: December 13, 2018
Status: Active

Webinar: Aquatic Ecosystem Vulnerability to Fire and Climate Change in Alaskan Boreal Forests

View this webinar for more information about conservation efforts surrounding aquatic habitats in boreal Alaska.

Filter Total Items: 152
Yellow-billed loons are exposed to mercury on their wintering grounds in Asia before migrating to Alaska for breeding.
December 2, 2019

This metadata document describes the data contained in the "processedData" folder of this data package. This data package contains all data collected by the Argos System from 92 satellite transmitters attached to adult Yellow-billed Loons on their breeding range in Arctic Alaska and Canada, 2002-2017. The raw data were processed to accomplish two goals: flag implausible location estimates

Taku Range, Juneau Icefield, Alaska
November 12, 2019

Since the 1940s, the Juneau Icefield Research Program (JIRP) has been measuring surface mass balance on the Juneau Icefield. This is the longest ongoing program of its kind in North America. The program nominally occurs between late June and late August, traversing between Juneau, Alaska and Atlin, British Columbia. JIRP has examined the surface mass balance of the Juneau Icefield sin

Spectacled eider male and female flying near the Colville River in 2013.
November 12, 2019

This data set describes nuclear microsatellite genotypes derived from ten autosomal loci (Aph8, Aph16, Cmo7, Cmo9, Hhi5, Sfi10, Smo4, Smo6, Smo8, Smo12) and nucleotide sequence data derived from one mitochondrial DNA locus (control region). A total of 262 Spectacled Eiders were examined for this study. Samples were collected at Indigirka and Chaun River Deltas, Russia%

placeholder for data files
November 8, 2019

These data are in three tables relating to a series of ponds, visited weekly over the summer of 2013, in the Chipp River Basin on the Arctic Coastal Plain of northern Alaska. The tables provide: 1) location and description of each of the ponds, 2) physical information on pond characteristics (area, volume, and temperature), water chemistry (electrical conductivity, disso

Recovered river meanders along Kobuk River, Kobuk Valley National Park
October 30, 2019

This data set includes 15-minute interval data on stream temperature, stage, and discharge from low-order streams in the Noatak and Kobuk River valleys in Northwestern Alaska, collected during the summer months. Several sites in the Agashashok River basin were monitored in 2015 and 2016, and additional sites were added in 2017. The depth of the water and temperature were determined usin

Northern Pintail Duck swimming
September 18, 2019

This metadata document describes the data contained in the "rawData" folder of this data package. This data package contains all data collected by the Argos System from 129 satellite transmitters attached to Northern Pintail ducks on their winter range in Japan, 2007-2009. Five data files are included in the "rawData" folder of this data package. Two data files (with identical content

Northern Pintail Duck swimming
September 18, 2019

This metadata document describes the data contained in the "processedData" folder of this data package. This data package contains all data collected by the Argos System from 129 satellite transmitters attached to Northern Pintail ducks on their winter range in Japan, 2007-2009. The raw data were processed to accomplish two goals: flag implausible location estimates and decode raw sensor

Blue-winged Teal flying
September 18, 2019

This metadata document describes the data contained in the "rawData" folder of this data package. This data package contains all data collected by the Argos System from 42 satellite transmitters attached to Blue-winged Teal ducks on their breeding range in Saskatchewan and Alberta (August 2013) and spring staging areas in Texas and Louisiana (March 2015). Five data files are included

Blue-winged Teal flying
September 18, 2019

This metadata document describes the data contained in the "processedData" folder of this data package. This data package contains all data collected by the Argos System from 42 satellite transmitters attached to Blue-winged Teal ducks on their breeding range in Saskatchewan and Alberta (August 2013) and spring staging areas in Texas and Louisiana (March 2015). The raw data were proce

USGS
September 10, 2019

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered gas hydrate resources on the north slope of Alaska. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum Syste

A shorebird on a post in Hawaii
September 5, 2019

This data set contains bill and tarsal measurements from 114 Bristle-thighed Curlews, captured on breeding grounds in Alaska, and non-breeding areas in Hawaii and Reitoru atoll, French Polynesia.

USGS
September 5, 2019

Select samples were collected from boreholes in Arctic Alaska to determine the U-Pb ages of zircon to determine a maximum depositional age of the geologic units and/or provenance of the zircon in the samples. Samples were collected from the Department of Natural Resources-Alaska Geologic Materials Center in Anchorage Alaska and sent to U.S. Geological Survey-Geology, Geophysics and Geochemist

Filter Total Items: 114
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Year Published: 2015

Depositional conditions for the Kuna Formation, Red Dog Zn-PB-Ag-Barite District, Alaska, inferred from isotopic and chemical proxies

Water column redox conditions, degree of restriction of the depositional basin, and other paleoenvironmental parameters have been determined for the Mississippian Kuna Formation of northwestern Alaska from stratigraphic profiles of Mo, Fe/Al, and S isotopes in pyrite, C isotopes in organic matter, and N isotopes in bulk rock. This unit is...

Johnson, Craig A.; Dumoulin, Julie A.; Burruss, Robert A.; Slack, John F.
Johnson, C.A., Dumoulin, J.A., Burruss, R.A., and Slack, J.F., 2015, Depositional conditions for the Kuna Formation, Red Dog Zn-Pb-Ag-barite district, Alaska, inferred from isotopic and chemical proxies: Economic Geology, v. 110, p. 1143-1156.

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Year Published: 2015

Mesozoic magmatism and timing of epigenetic Pb-Zn-Ag mineralization in the western Fortymile mining district, east-central Alaska: Zircon U-Pb geochronology, whole-rock geochemistry, and Pb isotopes

The Mesozoic magmatic history of the North American margin records the evolution from a more segmented assemblage of parautochthonous and allochthonous terranes to the more cohesive northern Cordilleran orogenic belt. We characterize the setting of magmatism, tectonism, and epigenetic mineralization in the western Fortymile mining district, east-...

Dusel-Bacon, Cynthia; Aleinkoff, J.N.; Day, W.C.; Mortensen, J.K.
Dusel-Bacon, C., Aleinikoff, J.N., Day, W.C., and Mortensen, J.K., 2015, Mesozoic magmatism and timing of epigenetic Pb-Zn-Ag mineralization in the western Fortymile mining district, east-central Alaska: Zircon U-Pb geochronology, whole-rock geochemistry, and Pb isotopes: Geosphere, v. 11, no. 3, p. 786–822, doi:10.1130/GES01092.1.

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Year Published: 2015

Hydrothermal, biogenic, and seawater components in metalliferous black shales of the Brooks Range, Alaska: Synsedimentary metal enrichment in a carbonate ramp setting

Trace element and Os isotope data for Lisburne Group metalliferous black shales of Middle Mississippian (early Chesterian) age in the Brooks Range of northern Alaska suggest that metals were sourced chiefly from local seawater (including biogenic detritus) but also from externally derived hydrothermal fluids. These black shales are interbedded...

Slack, John F.; Selby, David; Dumoulin, Julie A.
Slack, J. F., Selby, D., & Dumoulin, J. A. (2015). Hydrothermal, Biogenic, and Seawater Components in Metalliferous Black Shales of the Brooks Range, Alaska: Synsedimentary Metal Enrichment in a Carbonate Ramp Setting. Economic Geology, 110(3), 653–675.

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Year Published: 2014

The Late Cretaceous Middle Fork caldera, its resurgent intrusion, and enduring landscape stability in east-central Alaska

Dissected caldera structures expose thick intracaldera tuff and, uncommonly, cogenetic shallow plutons, while remnants of correlative outflow tuffs deposited on the pre-eruption ground surface record elements of ancient landscapes. The Middle Fork caldera encompasses a 10 km × 20 km area of rhyolite welded tuff and granite porphyry in east-...

Bacon, Charles R.; Dusel-Bacon, Cynthia; Aleinikoff, John N.; Slack, John F.
Bacon, C.R., Dusel-Bacon, C., Aleinikoff, J.N., and Slack, J.F., 2014, The Late Cretaceous Middle Fork caldera, its resurgent intrusion, and enduring landscape stability in east-central Alaska: Geosphere, v. 10, p. 1432–1455.

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Year Published: 2014

Seismicity of the Earth 1900-2013 offshore British Columbia-southeastern Alaska and vicinity

The tectonics of the Pacific margin of North America between Vancouver Island and south-central Alaska are dominated by the northwest motion of the Pacific plate with respect to the North America plate at a velocity of approximately 50 mm/yr. In the south of this mapped region, convergence between the northern extent of the Juan de Fuca plate (...

Hayes, Gavin P.; Smoczyk, Gregory M.; Ooms, Jonathan G.; McNamara, Daniel E.; Furlong, Kevin P.; Benz, Harley M.; Villaseñor, Antonio H.
Seismicity of the Earth 1900-2013 offshore British Columbia-southeastern Alaska and vicinity; 2014; OFR; 2010-1083-O; Compiled by Hayes, Gavin P.; Smoczyk, Gregory M.; Ooms, Jonathan G.; McNamara, Daniel E.; Furlong, Kevin P.; Benz, Harley M.; Villaseñor, Antonio

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Year Published: 2014

Maps showing seismic landslide hazards in Anchorage, Alaska

The devastating landslides that accompanied the great 1964 Alaska earthquake showed that seismically triggered landslides are one of the greatest geologic hazards in Anchorage. Maps quantifying seismic landslide hazards are therefore important for planning, zoning, and emergency-response preparation. The accompanying maps portray seismic...

Jibson, Randall W.
Maps showing seismic landslide hazards in Anchorage, Alaska; 2014; Jibson, Randall W.

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Year Published: 2014

High fidelity does not preclude colonization: range expansion of molting Black Brant on the Arctic coast of Alaska

High rates of site fidelity have been assumed to infer static distributions of molting geese in some cases. To test this assumption, we examined movements of individually marked birds to understand the underlying mechanisms of range expansion of molting Black Brant (Branta bernicla nigricans) on the Arctic Coastal Plain (ACP) of Alaska. The...

Flint, Paul L.; Meixell, Brandt W.; Mallek, Edward J.
High fidelity does not preclude colonization: range expansion of molting Black Brant on the Arctic coast of Alaska; 2014; Article; Journal; Journal of Field Ornithology; Flint, Paul L.; Meixell, Brandt W.; Mallek, Edward J.

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Year Published: 2014

Uplift and subsidence reveal a nonpersistent megathrust rupture boundary (Sitkinak Island, Alaska)

We report stratigraphic evidence of land-level change and tsunami inundation along the Alaska-Aleutian megathrust during prehistoric and historical earthquakes west of Kodiak Island. On Sitkinak Island, cores and tidal outcrops fringing a lagoon reveal five sharp lithologic contacts that record coseismic land-level change. Radiocarbon dates, 137Cs...

Briggs, Richard W.; Engelhart, Simon E.; Nelson, Alan R.; Dura, Tina; Kemp, Andrew C.; Haeussler, Peter J.; Corbett, D. Reide; Angster, Stephen J.; Bradley, Lee-Ann
Uplift and subsidence reveal a nonpersistent megathrust rupture boundary (Sitkinak Island, Alaska); 2014; Article; Journal; Geophysical Research Letters; Briggs, Richard W.; Engelhart, Simon E.; Nelson, Alan R.; Dura, Tina; Kemp, Andrew C.; Haeussler, Peter J.; Corbett, D. Reide; Angster, Stephen J.; Bradley, Lee-Ann

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Year Published: 2014

Comparison of smoothing methods for the development of a smoothed seismicity model for Alaska and the implications for seismic hazard

In anticipation of the update of the Alaska seismic hazard maps (ASHMs) by the U. S. Geological Survey, we report progress on the comparison of smoothed seismicity models developed using fixed and adaptive smoothing algorithms, and investigate the sensitivity of seismic hazard to the models. While fault-based sources, such as those for great...

Moschetti, Morgan P.; Mueller, Charles S.; Boyd, Oliver S.; Petersen, Mark D.
Comparison of smoothing methods for the development of a smoothed seismicity model for Alaska and the implications for seismic hazard; 2014; Conference publication; American Geophysical Union, Fall Meeting 2013; Moschetti, Morgan P.; Mueller, Charles S.; Boyd, Oliver S.; Petersen, Mark D.

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Year Published: 2013

Tackling “boundary faults” across the Alaska-Yukon border: a report from the field

One day in late May, a team of geologists from two countries and four different organizations got together in a remote corner of the Yukon Territory to try to rectify a mapping discrepancy called a “boundary fault.”

Saltus, Rick
Tackling “boundary faults” across the Alaska-Yukon border: a report from the field; 2013; Article; Journal; Earth; Saltus, Rick

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Year Published: 2013

Alaska Geochemical Database, Version 2.0 (AGDB2)--including “best value” data compilations for rock, sediment, soil, mineral, and concentrate sample media

The Alaska Geochemical Database Version 2.0 (AGDB2) contains new geochemical data compilations in which each geologic material sample has one “best value” determination for each analyzed species, greatly improving speed and efficiency of use. Like the Alaska Geochemical Database (AGDB, http://pubs.usgs.gov/ds/637/) before it, the AGDB2...

Granitto, Matthew; Schmidt, Jeanine M.; Shew, Nora B.; Gamble, Bruce M.; Labay, Keith A.

Filter Total Items: 1,072
View from above looking back at a coastal bluff where large sections have collapsed and crumbled onto the beach.
September 30, 2019

Oblique view of Barter Island bluffs

Example of a high-oblique photograph taken with an unmanned aerial system (UAS), or drone, of the coastal bluffs of Barter Island on North Slope of Alaska. The photographs from different time periods can be compared, using a technique called structure-from-motion photogrammetry, to measure changes in the coastal bluffs. This area of Alaska is experiencing very high rates

...
View looking at a coastal bluff where a large chunk has collapsed onto the beach.
September 30, 2019

Low-oblique view of Barter Island bluffs

Example of a low-oblique photograph taken with an unmanned aerial system (UAS), or drone, of the coastal bluffs of Barter Island on North Slope of Alaska. The photographs from different time periods can be compared, using a technique called structure-from-motion photogrammetry, to measure changes in the coastal bluffs. This area of Alaska is experiencing very high rates of

...
An instrument with propellers, about the size of a large pizza box, stands on four legs on bare ground.
September 30, 2019

USGS PCMSC UAS

An remotely piloted aircraft (RPA) or drone, equipped with a camera, sits on the Arctic tundra awaiting a radio signal that tells it to fly.

Thermal photograph of a coastal bluff where two people can be seen standing and waving.
September 30, 2019

Thermal photograph of Barter Island bluffs

Example of a thermal photograph of Barter Island's bluffs, on the North Slope of Alaska. Two USGS scientists stand waving on the right side of the photo. Lighter areas are warmer, darker areas are colder. Thermal photography makes it easy to detect areas of permafrost, or the lack thereof.

A person stands on tundra at the edge of a cliff that has gigantic chunks of eroded blocks tumbled down onto the beach.
September 30, 2019

Large blocks of failed coastal bluff on Barter Island

Large blocks of coastal bluff tumble down onto the beach of Barter Island, on the North Slope of Alaska.

A person rides an ATV on a beach alongside gigantic chunks of coastal bluff that have fallen onto the beach.
September 30, 2019

Coastal bluffs collapsed onto the beach

Gigantic chunks of perafrost coastal bluffs tumbled down onto the beach along Barter Island on the North Slope of Alaska. A USGS scientist drives past them, seeking good locations to place instruments and markers that will be used in photographic analysis.

A drainage gully through Arctic tundra with slumped chunks of turf and permafrost.
September 30, 2019

Drainage gully in coastal bluffs of Barter Island

Along the stretch of coastal bluffs of Barter Island, North Slope of Alaska, a new drainage gully developed between September 2018 and September 2019. USGS scientists have been measuring permafrost degradation, coastal erosion, and flooding hazards on and around Barter Island for the last decade.

forage species caught in trawl net, Alaska
September 23, 2019

Forage species caught in trawl net, Prince William Sound, Alaska

Squid, adult walleye pollock, herring, eulachon, northern smoothtongue, capelin, juvenile walleye pollock, krill, and shrimp are forage species that are caught by a modified-herring trawl in Prince William Sound, Alaska during the Fall Integrated Predator-Prey Survey.

Sending the trawl net overboard, Alaska
September 19, 2019

Sending the trawl overboard, Prince William Sound, Alaska

Caitlin Marsteller (USGS) and April Sturgess (USGS) throw the cod end of the modified herring trawl overboard on the USGS R/V Alaskan Gyre during the Fall Integrated Predator-Prey survey in Prince William Sound, Alaska.

Keychain for USGS outreach activities about bird banding and reporting
September 17, 2019

Keychain for USGS outreach activities about bird banding and reporting

Keychain developed for USGS outreach activities about bird banding and reporting in Yup'ik and English. Yup'ik translation provided by Jakob Sipary, Alaska Native Science and Engineering Program (ANSEP).

Please see description for full content of infographic
September 10, 2019

Gas Hydrates in Alaska 2019

Lastest Assessment Here. 

 

 

GAS HYDRATES in ALASKA, September 2019

The Alaska North Slope is rich in gas hydrate-bearing formations which contain significant natural gas resources. The

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Filter Total Items: 260
A polar bear walks across rubble ice in the Alaska portion of the southern Beaufort Sea
June 6, 2017

A new study led by the U.S. Geological Survey and the University of Wyoming found that increased westward ice drift in the Beaufort and Chukchi seas requires polar bears to expend more energy walking eastward on a faster moving “treadmill” of sea ice.  

Sea otter in kelp
May 2, 2017

Thanks to a quarter-century of research and monitoring, scientists now know how different wildlife species were injured by the 1989 Exxon Valdez oil spill and how long it took for populations to recover.

A gas plume arising from Augustine Volcano during it's eruptive phase 2005-06.
April 28, 2017

Which U.S. State or territory has more large earthquakes than the rest of the United States combined?

Hydrologic Regions of Alaska
April 14, 2017

While freshwater ecosystems cover only a small amount of the land surface in Alaska, they transport and emit a significant amount of carbon, according to new U.S. Geological Survey research. An invited feature article for Ecological Applications provides the first-ever major aquatic carbon flux assessment for the entire state. Carbon flux refers to the rate of carbon transfer between pools.

Midnight Rainbow at Atigun Gorge, Alaska
April 10, 2017

Managing 72 million acres of Federal lands in Alaska is not easy, especially when the land’s many uses need to be balanced. There are several competing interests, including the development of mineral resources that are critical to the American economy.

Bogoslof Volcano, Alaska: ongoing eruption through the Bering Sea...
March 30, 2017

Hawai‘i is not the only island in the United States with an ongoing eruption involving hot lava and cold water.

Scientists taking soil samples
March 15, 2017

Alaska has considerable potential for undiscovered mineral resources, including critical minerals.

USGS
March 13, 2017

A new report by the USGS finds that although snow geese are increasing rapidly in northern Alaska, they are not having a negative effect on black brant. Brant are a goose species that shares its nesting habitat with snow geese.

Scientist collecting samples in the Arctic Coastal Plain
March 7, 2017

Despite recent changes to the growing season for plants in the Arctic, Alaska, caribou appear to have remained in sync with these changes over the last 30 years. 

Annotated aerial photo of crescent shaped island surrounded by open ocean.
March 3, 2017

Bogoslof volcano, located in the Aleutian Islands about 98 km (61 mi) northwest of Dutch Harbor/Unalaska, is in an active eruption sequence that began in mid-December 2016 and continues today.

A small bird with distinctive orange-brown feathers around its neck and blue feathers on head, sitting on a small shrub
March 2, 2017

Scientists can now predict which avian species are most sensitive to the increasingly dominant shrub habitat spreading across Alaska, a capability that will be useful for natural resource agencies in Alaska charged with managing these resources.

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