Unified Interior Regions

Alaska

The Alaska Region represents a resource-rich, dynamic landscape shaped by volcanos, earthquakes, major rivers, and glaciers. Here, we conduct research to inform management of Alaska’s extensive natural resources, inform national Arctic energy policy, and provide scientific information to help others understand, respond to, and mitigate impacts from natural hazards.

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Filter Total Items: 203
Date published: April 24, 2019
Status: Completed

Climate impacts to Arctic coasts, recent activities

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

Contacts: Li Erikson
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...

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.

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...

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...

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.

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.

Date published: November 29, 2018
Status: Active

Slow earthquakes in Alaska and the Pacific Northwest- Aaron Wech

Slow earthquakes occur regularly in subduction zones of Alaska and the Pacific Northwest. The goal of this project is to use seismic and/or geodetic data to understand how these events occur and what their relationship is to large damaging earthquakes

Date published: November 6, 2018
Status: Active

USGS Glaciers and Climate

Scientists with the USGS Glaciers and Climate Project study the process and impacts of glacier change, including sea-level rise, water resources, environmental hazards and ecosystem links. At the core of this research are mass balance measurements at five glaciers in the United States. Since the 1960s, these glaciers have been studied using direct observations of glaciers and meteorology. The...

Date published: October 31, 2018
Status: Active

Land-Sea Linkages in the Arctic

The Arctic is undergoing historically unprecedented changes in weather, sea ice, temperature and ecosystems.  These changes have led to greater coastal erosion, greater export of freshwater, and changes to marine and terrestrial ecosystems, habitats, and productivity, among other trends. Meanwhile, many believe the Arctic “amplifies” large climate changes during both warm periods and ice ages...

Date published: October 30, 2018
Status: Active

Quantifying groundwater resources and biogeochemical fluxes on Alaska’s North Slope and in the Arctic National Wildlife Refuge- Josh Koch

The Arctic is in a state of rapid change related to thawing permafrost, shifting seasons, altered and novel wildlife migrations, and increasing industrial activity.  Working at the interdisciplinary office in Anchorage will provide you an introduction to many of these processes. You will visit remote sites, participate in and lead important science, and have broad exposure to Artic research....

Filter Total Items: 200
Date published: April 27, 2020

Genetic Data From Nesting Steller’s Eiders (Polysticta stelleri), Near Utqiaġvik, Alaska, 1995-2016

This data set is comprised of one table with Steller's Eider sample information and allele sizes for 6 microsatellite loci.

Date published: April 22, 2020

Chirp, multichannel minisparker, and boomer seismic-reflection data from USGS field activity G-01-13-GA collected in Port Valdez, Alaska, in September 2013

Multichannel minisparker and boomer seismic-reflection and chirp sub bottom data were collected by the U.S. Geological Survey in September of 2013 in Port Valdez, Alaska. Data were collected aboard the USGS R/V Alaskan Gyre during field activity G-01-13-GA. Sub-bottom acoustic penetration spans several hundreds of meters and is variable by location. High-resolution multichannel...

Date published: April 22, 2020

Chirp seismic-reflection data from USGS field activity G-01-13-GA collected in Port Valdez, Alaska, in September 2013

Chirp data were collected by the U.S. Geological Survey in September of 2013 in Port Valdez, Alaska. Data were collected aboard the USGS R/V Alaskan Gyre during field activity G-01-13-GA, using an EdgeTech SB-512i sub-bottom profiler. Sub-bottom acoustic penetration spans several tens of meters and is variable by location.

Date published: April 22, 2020

Multichannel minisparker and boomer seismic-reflection data from USGS field activity G-01-13-GA collected in Port Valdez, Alaska, in September 2013

Multichannel minisparker and boomer seismic-reflection data were collected by the U.S. Geological Survey in September of 2013 in Port Valdez, Alaska. Data were collected aboard the USGS R/V Alaskan Gyre during field activity G-01-13-GA, using a 500-Joule SIG 2-mille minisparker or an Applied Acoustics triple plated S-Boomer sound source and a 24-channel Goemetrics hydrophone streamer. Sub-b...

Date published: April 21, 2020

Geochemical data for stream water and stream sediment samples from the northeast part of the Tanacross quadrangle, Alaska

This data release is part of a study designed to test geochemical methods that best delineate known mineral deposits in the northeast part of the Tanacross 1° x 3° quadrangle, within the Yukon-Tanana Upland region, Alaska. The total area sampled is about 3,200 km2. Extensive tundra cover and patchy spruce/alder vegetation and very limited outcrop exposure characterize the area.

Date published: April 17, 2020

Physical, Hydraulic, and Thermal Properties of Soils in the Noatak River Basin, Alaska, 2016

This dataset includes physical, hydraulic, and thermal properties of soils collected in two sub-watersheds in the Noatak River Basin in northwestern Alaska. Physical properties include dry bulk density and porosity. Hydraulic properties include field- and lab-based hydraulic conductivity, soil-water retention data, and parameters used in a common soil-water retention model (van Genuchte

Date published: March 27, 2020

Gulf Watch Alaska, Nearshore Component: Sea Otter Mortality Age Data from Katmai National Park and Preserve, Kenai Fjords National Park, and Prince William Sound, Alaska, 2006-2017

These data are part of the Gulf Watch Alaska (GWA) long term monitoring program, nearshore monitoring component. The dataset is a comma separated file exported from a Microsoft Excel spreadsheet. The data consist of information related to collection of sea otter carcasses. Collectors walked selected shorelines searching for signs of carcasses. Date, location, carcass condition, parts

Date published: March 26, 2020

Gulf Watch Alaska Nearshore Component: Sea Otter Aerial Survey Data Katmai National Park and Preserve, 2008 - 2018 (ver 2.0, March 2020)

These data are part of the Gulf Watch Alaska (GWA) long term monitoring program, nearshore monitoring component. Specifically, these data describe sea otter (Enhydra lutris) aerial survey observations from the waters around Katmai National Park and Preserve from surveys conducted in 2008, 2012, 2015, and 2018. Sea otters are a keystone predator, well known for structuring the

Date published: March 19, 2020

Argos Satellite Tracking Data for Black Scoters (Melanitta americana) - Raw Data

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 53 satellite transmitters attached to Black Scoters on their breeding and winter ranges in western Alaska, 2003-2007. Five data files are included in the "rawData" folder of this data package. Two data files (with iden

Date published: March 19, 2020

Argos Satellite Tracking Data for Black Scoters (Melanitta americana) - Processed Data

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 53 satellite transmitters attached to Black Scoters on their breeding and winter ranges in western Alaska, 2003-2007. The raw data were processed to accomplish two goals: flag implausible location estimates and decod

Date published: March 17, 2020

Argos Satellite Tracking Data for Surf Scoters (Melanitta perspicillata) - Processed Data

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 25 satellite transmitters attached to Surf Scoters on their winter ranges in southeast Alaska and Baja California, Mexico, 2005-2008. The raw data were processed to accomplish two goals: flag implausible location e

Date published: March 17, 2020

Argos Satellite Tracking Data for Surf Scoters (Melanitta perspicillata) - Raw Data

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 25 satellite transmitters attached to Surf Scoters on their winter ranges in southeast Alaska and Baja California, Mexico, 2005-2008. Five data files are included in the "rawData" folder of this data package. Two data

Filter Total Items: 135
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Year Published: 2015

Landslides and megathrust splay faults captured by the late Holocene sediment record of eastern Prince William Sound, Alaska

We present new marine seismic‐reflection profiles and bathymetric maps to characterize Holocene depositional patterns, submarine landslides, and active faults beneath eastern and central Prince William Sound (PWS), Alaska, which is the eastern rupture patch of the 1964 Mw 9.2 earthquake. We show evidence that submarine landslides, many of which...

Finn, S.P.; Liberty, Lee M.; Haeussler, Peter J.; Pratt, Thomas L.

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Year Published: 2015

Geologic Map of Baranof Island, southeastern Alaska

This map updates the geology of Baranof Island based on fieldwork, petrographic analyses, paleontologic ages, and isotopic ages. These new data provide constraints on depositional and metamorphic ages of lithostratigraphic rock units and the timing of structures that separate them. Kinematic analyses and thermobarometric calculations provide...

Karl, Susan M.; Haeussler, Peter J.; Himmelberg, Glen R.; Zumsteg, Cathy L.; Layer, Paul W.; Friedman, Richard M.; Roeske, Sarah M.; Snee, Lawrence W.
Karl, S.M., Haeussler, P.J., Himmelberg, G.R., Zumsteg, C.L., Layer, P.W., Friedman, R.M., Roeske, S.M., and Snee, L.W., 2015, Geologic map of Baranof Island, southeastern Alaska: U.S. Geological Survey Scientific Investigations Map 3335, pamphlet 82 p., scale 1:200,000, http://dx.doi.org/10.3133/sim3335.

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Year Published: 2015

Tsunami recurrence in the eastern Alaska-Aleutian arc: A Holocene stratigraphic record from Chirikof Island, Alaska

Despite the role of the Alaska-Aleutian megathrust as the source of some of the largest earthquakes and tsunamis, the history of its pre–twentieth century tsunamis is largely unknown west of the rupture zone of the great (magnitude, M 9.2) 1964 earthquake. Stratigraphy in core transects at two boggy lowland sites on Chirikof Island’s...

Nelson, Alan R.; Briggs, Richard W.; Dura, Tina; Engelhart, Simon E.; Gelfenbaum, Guy; Bradley, Lee-Ann; Forman, S.L.; Vane, Christopher H.; Kelley, K.A.

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Year Published: 2015

Updating the USGS seismic hazard maps for Alaska

The U.S. Geological Survey makes probabilistic seismic hazard maps and engineering design maps for building codes, emergency planning, risk management, and many other applications. The methodology considers all known earthquake sources with their associated magnitude and rate distributions. Specific faults can be modeled if slip-rate or recurrence...

Mueller, Charles; Briggs, Richard W.; Wesson, Robert L.; Petersen, Mark D.

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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

Focused exhumation along megathrust splay faults in Prince William Sound, Alaska

Megathrust splay faults are a common feature of accretionary prisms and can be important for generating tsunamis during some subduction zone earthquakes. Here we provide new evidence from Alaska that megathrust splay faults have been conduits for focused exhumation in the last 5 Ma. In most of central Prince William Sound, published and new...

Haeussler, Peter J.; Armstrong, Phillip A; Liberty, Lee M; Ferguson, Kelly M; Finn, Shaun P; Arkle, Jeannette C; Pratt, Thomas L.
Haeussler, P. J., Armstrong, P. A., Liberty, L. M., Ferguson, K. M., Finn, S. P., Arkle, J. C., & Pratt, T. L. (2015, April). Focused exhumation along megathrust splay faults in Prince William Sound, Alaska. Quaternary Science Reviews. Elsevier BV. https://doi.org/10.1016/j.quascirev.2014.10.013

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Year Published: 2015

Slab melting beneath the Cascades Arc driven by dehydration of altered oceanic peridotite

Water is returned to Earth’s interior at subduction zones. However, the processes and pathways by which water leaves the subducting plate and causes melting beneath volcanic arcs are complex; the source of the water—subducting sediment, altered oceanic crust, or hydrated mantle in the downgoing plate—is debated; and the role of...

Walowski, Kristina J; Wallace, Paul J.; Hauri, E.H.; Wada, I.; Clynne, Michael A.
Walowski, Kristina J., Wallace, Paul J., Hauri, E.H., Wada, I., and Clynne, M.A., 2015, Slab melting beneath the Cascades Arc driven by dehydration of altered oceanic peridotite: Nature Geoscience doi: 10.1038/NGEO2417.

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Year Published: 2015

Strain accumulation across the Prince William Sound asperity, Southcentral Alaska

The surface velocities predicted by the conventional subduction model are compared to velocities measured in a GPS array (surveyed in 1993, 1995, 1997, 2000, and 2004) spanning the Prince William Sound asperity. The observed velocities in the comparison have been corrected to remove the contributions from postseismic (1964 Alaska earthquake)...

Savage, James C.; Svarc, Jerry L.; Lisowski, Michael

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Year Published: 2015

Beach ridges as paleoseismic indicators of abrupt coastal subsidence during subduction zone earthquakes, and implications for Alaska-Aleutian subduction zone paleoseismology, southeast coast of the Kenai Peninsula, Alaska

The Kenai section of the eastern Alaska-Aleutian subduction zone straddles two areas of high slip in the 1964 great Alaska earthquake and is the least studied of the three megathrust segments (Kodiak, Kenai, Prince William Sound) that ruptured in 1964. Investigation of two coastal sites in the eastern part of the Kenai segment, on the southeast...

Kelsey, Harvey M.; Witter, Robert C.; Engelhart, Simon E.; Briggs, Richard W.; Nelson, Alan R.; Haeussler, Peter J.; Corbett, D. Reide

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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: 2015

Variations in population vulnerability to tectonic and landslide-related tsunami hazards in Alaska

Effective tsunami risk reduction requires an understanding of how at-risk populations are specifically vulnerable to tsunami threats. Vulnerability assessments primarily have been based on single hazard zones, even though a coastal community may be threatened by multiple tsunami sources that vary locally in terms of inundation extents and wave...

Wood, Nathan J.; Peters, Jeff
Wood, N., and Peters, J., 2015, Variations in population vulnerability to tectonic and landslide-related tsunami hazards in Alaska, Natural Hazards, 75(2): 1811-1831

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Pacific walruses jousting with their tusks, Chukchi Sea, Alaska
September 3, 2019

Pacific walruses jousting with their tusks, Chukchi Sea, Alaska

Pacific walruses jousting with their tusks on the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Pacific walruses hauled out on beach, Alaska
September 3, 2019

Pacific walruses hauled out on beach, Alaska

Pacific walruses resting on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Pacific walruses resting in the water, Chukchi Sea, Alaska
September 3, 2019

Pacific walruses resting in the water, Chukchi Sea, Alaska

Pacific walruses resting in the water on the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Pacific walruses jousting with their tusks, Alaska
September 3, 2019

Close up of Pacific walruses jousting with their tusks, Chukchi Sea

Pacific walruses jousting with their tusks on the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Pacific walruses resting on beach, Chukchi Sea, Alaska
September 2, 2019

Pacific walruses resting on beach, Chukchi Sea, Alaska

Pacific walruses resting on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Pacific walruses hauled out on beach, Alaska
September 2, 2019

Pacific walruses hauled out on beach, Chukchi Sea, Alaska

Pacific walruses hauled out on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Group of Pacific walruses resting on beach, Alaska
September 2, 2019

Group of Pacific walruses resting on beach, Chukchi Sea, Alaska

Pacific walruses resting on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Solitary walrus calf with skin lesions resting on shore of the Chukchi Sea
September 2, 2019

Solitary walrus calf with skin lesions on beach, Chukchi Sea, Alaska

Solitary walrus calf with skin lesions resting on the eastern shore of the Chukchi Sea, Alaska (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Close up of solitary walrus calf with skin lesions, Alaska
September 2, 2019

Solitary walrus calf with skin lesions on shore, Chukchi Sea, Alaska

Solitary walrus calf with skin lesions resting on the eastern shore of the Chukchi Sea, Alaska (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

close up of Pacific walruses resting on the beach, Alaska
September 2, 2019

Pacific walruses resting on beach, Chukchi Sea

Pacific walruses resting on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

USGS wildlife biologist, piloting an unmanned aerial system (UAS)
August 30, 2019

USGS wildlife biologist piloting an UAS for use in walrus survey

USGS wildlife biologist, Anthony Fischbach, piloting an unmanned aerial system (UAS) for use in surveying walruses while they rest on shore.  The UAS is flown above 300 feet altitude such that it enables survey data collection with minimal risk to the walruses.  (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Pacific walruses in water jousting with their tusks, Alaska
August 30, 2019

Pacific walruses in water jousting with their tusks, Alaska

Pacific walruses jousting with their tusks on the eastern shore of the Chukchi Sea, Alaska  (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Filter Total Items: 280
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.

Image shows an undersea gas hydrate formation with shellfish on it.
February 9, 2017

A recent interpretive review of scientific literature performed by the U.S. Geological Survey and the University of Rochester sheds light on the interactions of gas hydrates and climate.

Dr. Christian Zimmerman, USGS Alaska Science Center Director
February 1, 2017

The U.S. Geological Survey is pleased to announce the selection of Dr. Christian Zimmerman as the new director of their Alaska Science Center in Anchorage, Alaska. Zimmerman succeeds Dr. Mark Shasby who held the position for the past six years.

USGS scientist placing a tracking collar on a caribou.
December 19, 2016

Caribou, North America’s wild reindeer, have lives apart from their famous role on Christmas Eve. Reindeer and caribou are large, cold-adapted, herding herbivores related to deer, elk and moose.

To learn more about how these arctic antler-bearers spend the other 364 days of the year, we talked to USGS caribou expert Dr. Layne Adams, who has studied these animals for more than 30 years.

Repeat oblique photographs of Gulkana glaciers in Alaska.
September 28, 2016

ANCHORAGE, Alaska — This year marks the 50th anniversary of one of the longest continuous glacier research efforts in North America.

Scientists setting a trap for gulls at the landfill
September 26, 2016

ANCHORAGE, Alaska — Some gulls in southcentral Alaska are carriers of antibiotic resistant strains of E. coli, according to a new study co-authored by the U.S. Geological Survey.