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Filter Total Items: 195
Alaskan tundra
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

Arctic glacier
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...

Researchers deploying gravity corer off boat in Chukchi Sea.
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...

This shows hand-installing a well to understand ground water in the study area.
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....

A scenic of a Aleutian island with fireweed in full bloom
Date Published: October 22, 2018
Status: Active

Alaska Science Center Seminar Series

The USGS Alaska Science Center has a monthly seminar series that runs from October through May.  This series highlights the multiple research programs that are taking place across all disciplines at the center.

Contacts: Yvette Gillies
Lingering oil in the sediments of Knight Island
Date Published: October 18, 2018
Status: Active

Genomic Mechanisms that Underlie Lack of Recovery of Prince William Sound Herring Following the 1990s Collapse

In the decades following the Exxon Valdez Oil Spill (EVOS), it has become increasingly apparent that oil can be toxic at extremely low concentrations to developing fish embryos including herring, where some toxic phenotypes may be apparent during embryogenesis, but some are delayed until later in life. Therefore, acute and lingering oil may act as an insidious selective force within...

Contacts: Paul Hershberger, Ph.D., Jacob Gregg, Ashley MacKenzie, William Richards, Andrew Whitehead, John Incardona, Nat Scholtz
Oil Tanker in Prince William Sound
Date Published: October 18, 2018
Status: Active

Herring Disease Program

Using an approach that involves a combination of field- and laboratory-based studies, we are investigating fish health factors that may be contributing to the failed recovery of Pacific herring populations in Prince William Sound, AK.  Field studies are providing infection and disease prevalence data to inform the population models, serological data that indicate the prior exposure history and...

Resolving Spatial and Temporal Variability of Snow Accumulation
Date Published: October 16, 2018
Status: Active

Resolving spatial and temporal variability of snow accumulation in mountain and glacier environments- Shad O'Neel

The complex nature of snow limits our quantitative understanding of its distribution on the landscape. This internship will focus on a unique data set of snow radar profiles collected at multiple glaciers in Alaska over several years. The data has potential to transform our understanding of snow accumulation processes on glaciers.

Map of Alaska with red lines
Date Published: October 9, 2018
Status: Active

Alaska Seismic Hazard Map

The National Seismic Hazard Maps developed by the USGS show the spatial probability of peak earthquake-driven ground motion levels. Since the last revisions to the map for Alaska in 2007, scientists have made significant advances in understanding active faulting, fault slip rates, and fault behavior.

Image: Geologic Studies on Sitkinak Island, Alaska
Date Published: October 9, 2018
Status: Active

Alaska-Aleutian Subduction Zone Studies

Our research team is exploring seismic and aseismic slip along the Alaska-Aleutian arc and studying the prehistoric record of megathrust earthquakes and tsunamis along the Alaska-Aleutian subduction zone

Seismic and Aseismic Slip: Tectonic tremor and associated slow slip events represent a newly discovered part of the earthquake cycle. This research aims to...

Fault offset along the Queen Charlotte Fault
Date Published: October 9, 2018
Status: Active

Characterizing the Active Queen Charlotte-Fairweather Fault System

This research aims to better characterize the earthquake potential of the southern Fairweather Fault in order to provide more accurate fault source data for the USGS National Seismic Hazard Map. Our approach interrogates lidar data and satellite imagery, applies paleoseismological methods to examine earthquake history, and leverages partnerships with USGS scientists from Colorado and...

Small bird in a hand
Date Published: September 22, 2018
Status: Active

Monitoring and Research Boreal Partners in Flight Projects

Boreal Partners in Flight has five major regional projects designed to monitor broad-scale trends in populations of landbirds. There are also many projects throughout Alaska that address specific research questions or local monitoring needs.

Filter Total Items: 152
Arctic glacier
September 5, 2019

Since the late 1950s, the USGS has maintained a long-term glacier mass-balance program at three North American glaciers. Measurements began on South Cascade Glacier, WA in 1958, expanding to Gulkana and Wolverine glaciers, AK in 1966, and later Sperry Glacier, MT in 2005. Additional measurements have been made on Lemon Creek Glacier, AK to compliment data collected by the Juneau Ice

Flying Black Brant
September 4, 2019

This data set contains one table of the habitat classifications from imagery captured during aerial photographic surveys at the five primary Pacific black brant colonies on the Yukon-Kuskokwim Delta in western Alaska from 1993-2016.

Watercolor of boat on water, houses and mountains
September 1, 2019

The Alaska Geochemical Database Version 3.0 (AGDB3) 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 Version 2.0 before it, the AGDB3 was created and designed to compile and integrate geochemical data from Alaska t

Crevices on glacier, Juneau Icefield
August 29, 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

placeholder for data files
August 15, 2019

This dataset includes information on the carbon samples that were collected from organic and mineral soils, streams, algae, invertebrates, and fish in the Arctic Network Parks.

Two polar bears swimming in the water in the Beaufort Sea
July 31, 2019

These data from satellite radio-collared adult female polar bears captured in the southern Beaufort Sea, 1985-2016 were used for testing the regional, seasonal and decadal efficacy of retrospective polar bear resource selection functions (RSF) developed for the Arctic basin and its peripheral seas (see Durner et al. 2009). The data includes the following: 1) a csv file of location

Marbled Godwit Wildlife Tracking
July 31, 2019

Understanding the short- and long-distance movements of wildlife is critical for a wide variety of ecological research studies and management decisions. Since the mid-1980s, the USGS Alaska Science Center has collected data from wildlife tracking devices to: determine locations of animals throughout their annual cycles, understand patterns of habitat use, quantify time spent on various be

A shorebird walking through the grasses in southwestern Alaska
July 31, 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 nine satellite transmitters attached to Marbled Godwits on their breeding range in southwest Alaska, USA. Five data files are included in the "rawData" folder of this data package. Two data files (with identical conten

A shorebird walking through the grasses in southwestern Alaska
July 31, 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 nine satellite transmitters attached to Marbled Godwits on their breeding range in southwest Alaska, USA. The raw data were processed to accomplish two goals: flag implausible location estimates and decode raw sensor

View of glacier capped mountains taken from a helicopter
July 16, 2019

Since the late 1950s, the USGS has maintained a long-term glacier mass-balance program at three North American glaciers. Measurements began on South Cascade Glacier, WA in 1958, expanding to Gulkana and Wolverine glaciers, AK in 1966, and later Sperry Glacier, MT in 2005. Additional measurements have been made on Lemon Creek Glacier, AK to compliment data collected by the Juneau Ice

placeholder for data files
July 2, 2019

The data package "Sea Otter Aerial Survey Data from Glacier Bay National Park and Preserve, 1999-2012" provides raw data for examining abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in Glacier Bay National Park and Preserve in southeast Alaska, based on data collected during a series of population-wide aerial surveys. The USGS aerial sea otter surveys have

Crevices on glacier, Juneau Icefield
June 26, 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

Filter Total Items: 114
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Year Published: 2013

Geochemistry, petrography, and zircon U-Pb geochronology of Paleozoic metaigneous rocks in the Mount Veta area of east-central Alaska: implications for the evolution of the westernmost part of the Yukon-Tanana terrane

We report the results of new mapping, whole-rock major, minor, and trace-element geochemistry, and petrography for metaigneous rocks from the Mount Veta area in the westernmost part of the allochthonous Yukon–Tanana terrane (YTT) in east-central Alaska. These rocks include tonalitic mylonite gneiss and mafic metaigneous rocks from the Chicken...

Dusel-Bacon, Cynthia; Day, Warren C.; Aleinikoff, John N.
Geochemistry, petrography, and zircon U-Pb geochronology of Paleozoic metaigneous rocks in the Mount Veta area of east-central Alaska: implications for the evolution of the westernmost part of the Yukon-Tanana terrane; 2013; Article; Journal; Canadian Journal of Earth Sciences; Dusel-Bacon, Cynthia; Day, Warren C.; Aleinikoff, John N.

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Year Published: 2011

Quantifying the influence of sea ice on ocean microseism using observations from the Bering Sea, Alaska

Microseism is potentially affected by all processes that alter ocean wave heights. Because strong sea ice prevents large ocean waves from forming, sea ice can therefore significantly affect microseism amplitudes. Here we show that this link between sea ice and microseism is not only a robust one but can be quantified. In particular, we show that...

Tsai, Victor C.; McNamara, Daniel E.
Quantifying the influence of sea ice on ocean microseism using observations from the Bering Sea, Alaska; 2011; Article; Journal; Geophysical Research Letters; Tsai, Victor C.; McNamara, Daniel E.

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Year Published: 2011

Geomagnetic referencing in the arctic environment

Geomagnetic referencing is becoming an increasingly attractive alternative to north-seeking gyroscopic surveys to achieve the precise wellbore positioning essential for success in today's complex drilling programs. However, the greater magnitude of variations in the geomagnetic environment at higher latitudes makes the application of geomagnetic...

Podjono, Benny; Beck, Nathan; Buchanan, Andrew; Brink, Jason; Longo, Joseph; Finn, Carol A.; Worthington, E. William
Geomagnetic referencing in the arctic environment; 2011; Conference publication; Podjono, Benny ; Beck, Nathan ; Buchanan, Andrew ; Brink, Jason ; Longo, Joseph ; Finn, Carol A.; Worthington, E. William

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Year Published: 2011

Alaska Geochemical Database (AGDB)-Geochemical data for rock, sediment, soil, mineral, and concentrate sample media

The Alaska Geochemical Database (AGDB) was created and designed to compile and integrate geochemical data from Alaska in order to facilitate geologic mapping, petrologic studies, mineral resource assessments, definition of geochemical baseline values and statistics, environmental impact assessments, and studies in medical geology. This Microsoft...

Granitto, Matthew; Bailey, Elizabeth A.; Schmidt, Jeanine M.; Shew, Nora B.; Gamble, Bruce M.; Labay, Keith A.
Alaska Geochemical Database (AGDB)-Geochemical data for rock, sediment, soil, mineral, and concentrate sample media; 2011; DS; 637; Granitto, Matthew; Bailey, Elizabeth A.; Schmidt, Jeanine M.; Shew, Nora B.; Gamble, Bruce M.; Labay, Keith A.

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Year Published: 2011

Going coastal: Shared evolutionary history between coastal British Columbia and Southeast Alaska wolves (canis lupus)

Background: Many coastal species occupying the temperate rainforests of the Pacific Northwest in North America comprise endemic populations genetically and ecologically distinct from interior continental conspecifics. Morphological variation previously identified among wolf populations resulted in recognition of multiple subspecies of wolves in...

Weckworth, Byron V.; Dawson, Natalie G.; Talbot, Sandra L.; Flamme, Melanie J.; Cook, Joseph A.
Going coastal: Shared evolutionary history between coastal British Columbia and Southeast Alaska wolves (canis lupus); 2011; Article; Journal; PLoS ONE; Weckworth, B. V.; Dawson, N. G.; Talbot, S. L.; Flamme, M. J.; Cook, J. A.

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Year Published: 2011

Status and distribution of the Kittlitz's murrelet Brachyramphus brevirostris in Kenai Fjords, Alaska

The Kittlitz's Murrelet Brachyramphus brevirostris is a candidate species for listing under the US Endangered Species Act because of its apparent declines within core population areas of coastal Alaska. During the summers of 2006-2008, we conducted surveys in marine waters adjacent to Kenai Fjords National Park, Alaska, to estimate the current...

Arimitsu, Mayumi L.; Piatt, John F.; Romano, Marc D.; van Pelt, Thomas I.
Status and distribution of the Kittlitz's murrelet Brachyramphus brevirostris in Kenai Fjords, Alaska; 2011; Article; Journal; Marine Ornithology; Arimitsu, M.; Piatt, J. F.; Romano, M. D.; van, Pelt, T. I.

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Year Published: 2011

Seismicity of the Earth 1900-2010 Aleutian arc and vicinity

This map shows details of the Aleutian arc not visible in an earlier publication. The Aleutian arc extends about 3,000 km from the Gulf of Alaska to the Kamchatka Peninsula. It marks the region where the Pacific plate subducts into the mantle beneath the North America plate. This subduction is responsible for the generation of the Aleutian Islands...

Benz, Harley M.; Herman, Matthew; Tarr, Arthur C.; Hayes, Gavin P.; Furlong, Kevin P.; Villaseñor, Antonio; Dart, Richard L.; Rhea, Susan
Seismicity of the Earth 1900-2010 Aleutian arc and vicinity; 2011; OFR; 2010-1083-B; Compiled by: Benz, Harley M.; Herman, Matthew; Tarr, Arthur C.; Hayes, Gavin P.; Furlong, Kevin P.; Villase?or, Antonio; Dart, Richard L.; Rhea, Susan

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Year Published: 2010

Catalogue of polar bear (Ursus maritimus) maternal den locations in the Beaufort Sea and neighboring regions, Alaska, 1910–2010

This report presents data on the approximate locations and methods of discovery of 392 polar bear (Ursus maritimus) maternal dens found in the Beaufort Sea and neighboring regions between 1910 and 2010 that are archived by the U.S. Geological Survey, Alaska Science Center, Anchorage, Alaska. A description of data collection methods, biases...

Durner, George M.; Fischbach, Anthony S.; Amstrup, Steven C.; Douglas, David C.
Durner, G.M., Fischbach, A.S., Amstrup, S.C., and Douglas, D.C., 2010, Catalogue of polar bear (Ursus maritimus) maternal den locations in the Beaufort Sea and neighboring regions, Alaska, 1910–2010: U.S. Geological Survey Data Series 568, 14 p.

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Year Published: 2010

Framework for ecological monitoring on lands of Alaska National Wildlife Refuges and their partners

National Wildlife Refuges in Alaska and throughout the U.S. have begun developing a spatially comprehensive monitoring program to inform management decisions, and to provide data to broader research projects. In an era of unprecedented rates of climate change, monitoring is essential to detecting, understanding, communicating and mitigating...

Woodward, Andrea; Beever, Erik A.
Framework for ecological monitoring on lands of Alaska National Wildlife Refuges and their partners, Anchorage, Alaska; 2010; OFR; 2010-1300; Add Authors from IPDS Emails

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Year Published: 2010

King eider use an income strategy for egg production: a case study for incorporating individual dietary variation into nutrient allocation research

The use of stored nutrients for reproduction represents an important component of life-history variation. Recent studies from several species have used stable isotopes to estimate the reliance on stored body reserves in reproduction. Such approaches rely on population-level dietary endpoints to characterize stored reserves (“capital”)...

Oppel, Steffen; Powell, Abby N.; O'Brien, Diane M.

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Year Published: 2010

Alaska’s changing fire regime - Implications for the vulnerability of its boreal forests

A synthesis was carried out to examine Alaska’s boreal forest fire regime. During the 2000s, an average of 767 000 ha·year–1 burned, 50% higher than in any previous decade since the 1940s. Over the past 60 years, there was a decrease in the number of lightning-ignited fires, an increase in extreme lightning-ignited fire...

Kasischke, Eric S.; Verbyla, David L.; Rupp, T. Scott; McGuire, A. David; Murphy, Karen A.; Jandt, Randi; Barnes, Jennifer L.; Hoy, E.; Duffy, Paul A.; Calef, Monika; Turetsky, Merritt R.

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Year Published: 2010

Resilience of Alaska’s boreal forest to climatic change

This paper assesses the resilience of Alaska’s boreal forest system to rapid climatic change. Recent warming is associated with reduced growth of dominant tree species, plant disease and insect outbreaks, warming and thawing of permafrost, drying of lakes, increased wildfire extent, increased postfire recruitment of deciduous trees, and...

Chapin, F.S.; McGuire, A. David; Ruess, Roger W.; Hollingsworth, Teresa N.; Mack, M.C.; Johnstone, J.F.; Kasischke, E.S.; Euskirchen, E.S.; Jones, J.B.; Jorgenson, M.T.; Kielland, K.; Kofinas, G.; Turetsky, M.R.; Yarie, J.; Lloyd, A.H.; Taylor, D.L.

Filter Total Items: 1,072
exposed ablation stake in the fall at Wolverine Glacier
September 9, 2019

Ablation Stake on Wolverine Glacier

An ablation stake which began the summer below the surface of the snow is shown here in the fall, extending far above bare ice surface of Wolverine Glacier, Alaska. A USGS scientist carries a portable steam drill, used to install the stakes in the glacier.

Three polar bears chew on the plastic bollards and rope that were placed on the Arctic tundra.
September 7, 2019

Polar bear chew toys

The bollards and rope used to cordon-off survey equipment prove too tempting to curious polar bears on Barter Island, on the North Slope of Alaska.

Water chemistry measurements on the Alaska Peninsula
September 6, 2019

Hydrologist takes water chemistry measures on the Alaska Peninsula

Laura Hubbard of the USGS Upper Midwest Water Science Center takes water chemistry measures on the Alaska Peninsula as part of research to understand how long influenza viruses remain viable in the environment.  

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.)

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.)

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.)

Filter Total Items: 260
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.

Ariel photo of the Yukon-Kuskokwim Delta
September 20, 2016

New research from the U.S. Geological Survey and partners illustrates how climate change is perceived among different generations of indigenous residents in subarctic Alaska. While all subjects agreed climate change is occurring, the older participants observed more overall changes than the younger demographic.

Glacier National Park
September 7, 2016

A team of USGS scientists spent 10 days in the wilderness, exploring one of the fastest-moving faults in America

Arctic Cod
August 8, 2016

Information relating to fish biology, locations and effects of climate change will help guide future research and management decisions

Issue4.6June2016Thumb
July 8, 2016

New USGS and NOAA Collaboration in Alaska Will Help Gain Insight into Juvenile Chinook Salmon Distributions and Migrations