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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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.

View Centers and Observatories

News

Date published: September 28, 2020

Earth MRI Funds Critical Minerals Projects in Alaska

A total of $634,000 will fund new research and preserve important data across the Last Frontier.

Date published: August 18, 2020

Barry Arm Landslide and Tsunami Hazard

A large steep slope in the Barry Arm fjord 30 miles (50 kilometers) northeast of Whittier, Alaska has the potential to fall into the water and generate a tsunami that could have devastating local effects on those who live, work, and recreate in and around Whittier and in northern Prince William Sound.

View the...

August 17, 2020

Alaska Science Center Newsletter - Fall 2020

We hope you enjoy and subscribe. Below are links to recent publications, data releases, and highlights of on-going research programs. In this issue we feature news on the Pacific marine heatwave, Alaska Earth Mapping Resources Initiative, and our Ecosystems Analytics group. See new additions to the Wildlife Tracking page, Data and tools and Publications.

Filter Total Items: 203
Date published: May 15, 2021
Status: Active

Alaska North Slope LiDAR

High-resolution light detection and ranging (lidar) elevation data were acquired along the north coast of Alaska between 2009 and 2012. The lidar acquisition, from Icy Cape, Alaska to the United States/Canadian border, comprised approximately 11,000 km2. The airborne lidar data were acquired in support of the U.S. Geological Survey...

Date published: August 18, 2020
Status: Active

Tracking Data for Pelagic Cormorants (Phalacrocorax pelagicus)

Available here are tracking data for the pelagic cormorant, a seabird species that breeds throughout the northern Pacific Ocean and spends the winter in East Asia and throughout costal portions of western North America. These data were collected to better understand the migratory patterns of Pelagic cormorants that breed in southeast Alaska.

Contacts: David Douglas
Date published: August 18, 2020
Status: Active

Tracking Data for Thick-billed Murres (Uria lomvia)

Available here are tracking data for the thick-billed murre, a seabird species that is found in the Arctic and regions of the North Pacific and North Atlantic oceans. These data were collected to better understand the migratory patterns of this species in the Chukchi Sea.

Contacts: David Douglas
Date published: August 18, 2020
Status: Active

Tracking Data for Common Murres (Uria aalge)

Available here are tracking data for the common murre, a seabird species that is found in regions of the North Pacific and Atlantic oceans, often in dense breeding colonies on cliffs and in large flocks on the water. These data were collected to better understand the migratory patterns of this species in the North Pacific Ocean and Chukchi Sea.

Contacts: David Douglas
Date published: August 17, 2020
Status: Active

Tracking Data for Red-faced Cormorants (Phalacrocorax urile)

Available here are tracking data for the red-faced cormorant, a seabird species that is found only in the North Pacific Ocean, breeding and wintering from southern Alaska and throughout the Aleutian Islands to Far Eastern Russia. These data were collected to better understand the migratory patterns of red-faced cormorants that breed in the Aleutian Islands.

Contacts: David Douglas
Date published: July 30, 2020
Status: Active

Tracking Data for Spectacled Eiders (Somateria fischeri)

Available here are tracking data of Spectacled Eider, a sea duck species that breeds only in Alaska and Russia and spends the winter exclusively in the Bering Sea.  The Alaska breeding population is listed as threatened under provisions of the Endangered Species Act. These data were collected to better understand the winter distribution in the Bering Sea and locate birds for winter aerial...

Contacts: David Douglas
Date published: July 28, 2020
Status: Active

U.S. West Coast and Alaska Marine Geohazards

Marine geohazards are sudden and extreme events beneath the ocean that threaten coastal populations. Such underwater hazards include earthquakes, volcanic eruptions, landslides, and tsunamis.

Devastating earthquakes in Japan (2011) and Chile (2010) that spawned pan-oceanic tsunamis sent a sobering reminder that U.S. coastlines are also vulnerable to natural disasters that originate in...

Date published: July 13, 2020
Status: Active

Molecular Ecology Laboratory

The main objectives of the USGS ASC molecular ecology research program are to 1) Identify and fill gaps in our knowledge about species and population diagnosis, biodiversity, and health of wildlife and their habitats to inform decision making by management agencies and 2) Provide state-of-the-art molecular science applications and protocols for USGS, Department of Interior, and other partners...

Date published: July 6, 2020
Status: Completed

Auroras and Earthquakes: Strange Companions

In 1722 and 1723 a London clockmaker, George Graham, observed daily and consistent variations on one of his instruments, a “Needle upon the Pin” (a compass), for which he had no explanation. Swedish scientists obtained some of Graham’s instruments to record what is now known to be the variations in Earth’s magnetic field. In 1741, they noticed a significant deflection of the compass needle...

Contacts: Adam Ringler, Ph.D., Lisa A Wald, Carl Tape
Date published: June 30, 2020
Status: Active

Tracking Data Releases

U.S. Geological Survey, Alaska Science Center, has previously released tracking data sets of polar bears, walrus, and Greater White-fronted goose.

Date published: June 26, 2020
Status: Active

Tracking Data for Three Large-bodied Gull Species and Hybrids (Larus spp.)

Available here are tracking data of large-bodied gull species and hybrids (Larus species). These data were collected to better understand the migratory movements of these birds and their role in the dispersal of antibiotic resistant bacteria among areas of Alaska and other regions.

Date published: May 11, 2020
Status: Active

Denali National Park Geohazards Geologic Mapping

Denali National Park (DENA) is a major draw for tourism and recreation and a major economic engine for central Alaska. However, the geologic forces that created the steep landscape of DENA also make it prone to geologic hazards (geohazards) like landslides, debris flows, and earthquakes. DENA has only one major road, called the ‘Park Road’, that serves nearly all of its infrastructure.

...

Filter Total Items: 200
Date published: October 15, 2020

Aerial Surveys of Shorebirds at Pre-migratory Staging Sites in Western Alaska, 2018-2019

These data are in one table and document the numbers of four species of shorebird counted during aerial surveys of coastal sites in western Alaska. Survey regions encompassed coastline between the mouths of the Kuskokwim and Yukon rivers, and the northern coast of the Alaska Peninsula from the mouths of the Kvichak and Naknek Rivers to Nelson Lagoon. Surveys were flown from 7-9 September 2018...

Date published: October 9, 2020

Gene Transcription and Heat Shock Protein 70 Abundance Measured in Muscle Tissue of Chinook Salmon, Yukon River Watershed, Alaska, 2016–2018

This data set documents the gene transcription levels for a panel of 12 selected genes and the heat shock protein 70 (HSP70) protein abundance measured in the muscle tissue of individual wild Chinook salmon captured from locations within the U.S. portion of the Yukon River watershed. Chinook salmon were primarily captured in 2016 and 2017 from existing field efforts (n = 477). A small n

Date published: October 9, 2020

Water Temperature and Dissolved Oxygen Measured During a Manipulative Thermal Challenge Experiment for Adult Salmonids, Yukon River, Alaska, 2018

This data set documents the temperature and dissolved oxygen of water during the implementation of a new experimental thermal challenge protocol for migrating adult Pacific salmon in remote settings. This experiment was conducted with migrating adult Chinook salmon near Pilot Station, Alaska, along the Yukon River in a location without access to utilities. The analysis of this data was publis...

Date published: October 9, 2020

Probability of Land Cover Classification Estimates for the Kenai Peninsula Lowlands; 1973, 2002, and 2017

The raster image represents a continuous surface of estimated land cover type probabilities for the western Kenai Peninsula circa 1973, circa 2002, and circa 2017. The estimated land cover types (Needleleaf Forest, Mixed Forest, Broadleaf Forest, Herbaceous, Wetland, Alpine, Barren, Shrub, Water) were derived from a random forest classifier executed in R (version 3.5.0%2

Date published: October 9, 2020

Land Cover Series Estimates for the Kenai Peninsula Lowlands; 1973, 2002, and 2017

These raster images represent continuous surfaces of estimated land cover types for the western Kenai Peninsula circa 1973, circa 2002, and circa 2017. This raster image represents the coded series of estimated land cover types for each pixel over the three distinct time periods. The estimated land cover types (Needleleaf Forest, Mixed Forest, Broadleaf Forest, Herbaceous, Wetland%2

Date published: October 9, 2020

Classification of Land Cover Estimates for the Kenai Peninsula Lowlands; 1973, 2002, and 2017

These raster images represent continuous surfaces of estimated land cover types for the western Kenai Peninsula circa 1973, circa 2002, and circa 2017. The estimated land cover types (Needleleaf Forest, Mixed Forest, Broadleaf Forest, Herbaceous, Wetland, Alpine, Barren, Shrub, Water) were derived from a random forest classifier executed in R (version 3.5.0). Predictor

Date published: September 25, 2020

Meteorological Data from Two Locations in the Agashashok River Watershed, Northwestern Alaska, 2015 to 2017

Meteorological data was collected from two locations in the Agashashok River Watershed, one high in the drainage located on tundra (67.5440 N, -161.6828 E) and a second on a rocky knoll near the watershed mouth (67.2821 N, -162.5841 E). The data contain information on air temperatures, rainfall, barometric pressure, relative humidity, incoming and outgoing radiation, and w

Date published: September 25, 2020

Continuous Records of Shallow Soil Temperature and Moisture in the Noatak River Basin, Alaska

Soil moisture and temperature were measured at four shallow depths in multiple locations within tundra and forested landscapes of the Agashashok River basin. The measurements were made continuously beginning in 2015 until the most recent download in summer, 2019 or until the sensors or loggers failed.

Date published: September 21, 2020

40Ar/39Ar Isotopic Data and Ages for Rocks from the Yukon-Tanana Upland of Eastern Alaska and the Northern Aleutian Range of South-Central Alaska

This data set contains 40Ar/39Ar isotopic data and ages for rocks from the Yukon-Tanana upland of eastern Alaska and the northern Aleutian Range of south-central Alaska. The entire sample suite was collected as part of geological mapping and supporting geochemical and geochronological analysis were conducted from 2013 to 2019 by the Mineral Resources Program of the U.S. Geological Survey (USG...

Date published: September 21, 2020

Data for Determining Age of Barrow's Goldeneye (Bucephala islandica) from External Characteristics, Alaska and Canada, 2007-2015

These data describe an exercise in which known age and sex class of 100 Barrow’s goldeneyes (Bucephala islandica), determined by expert examination bursa and plumage, was contrasted with age and sex classes estimated from photos by trained observers.

Date published: September 21, 2020

Genetic Data from Three Accipiter Species, North America, 1996-2014

This data set provides sample collection information and genetic data used to identify relationships between groups of North American accipiters, including one hybrid. Genetic data includes gender identification, nuclear and mtDNA sequence markers, and microsatellite genotypes derived from 20 autosomal loci (Age1302, Age1303, Age1304, Age1305, Age1306, Age1307, Age1308, Age1

Date published: September 21, 2020

Shrew (Sorex sp.) Gut Contents Identified by DNA Metabarcoding, North America, 1968-2016

This data package contains four tables related to helminths and bacteria identified in the guts of North American shrews (Genus: Sorex). Tables include: two tables of specimen information about each shrew, such as species, museum collection identification, and NCBI accession IDs; one table of NBCI GenBank accession numbers of previously identified DNA sequences used in this study

Filter Total Items: 6
The Alaska Geologic Map shows the generalized geology of the state, each color representing a different type or age of rock
December 5, 2017

This is an interactive version of the Alaska geologic map database which allows a user to view and access many features of the database and map through a standard web browser. In other words, there is no need for or knowledge of specialized GIS software.

Digital Elevation Model in the Atchafalaya Basin, LA
April 19, 2016

The 3DEP products and services available through The National Map consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

Alaska Topographic Map Contours on Glacier
March 10, 2016

New US Topo maps for Alaska are being produced statewide, with digital 7.5 minute 1:25,000-scale maps providing a comprehensive update to the 15-minute 1:63,360-scale printed maps produced nearly fifty years ago. You can view a status map showing where the new maps are available, and link to a site to download the maps.

Image shows a road split due to earthquake damage
March 27, 2014

On March 27, 1964 the largest recorded earthquake in U.S. history struck southcentral Alaska.  Click on the photos or the numbers to take a tour.

Filter Total Items: 135
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Year Published: 2020

Citizen science collaboration with the U.S. Geological Survey in Alaska

Citizen science is science undertaken by the public, usually in collaboration with professional scientific institutions. It encourages citizens to tackle real-world scientific problems and augments traditional science by expanding the coverage of data collection and by reducing costs of fieldwork in remote locations. Information collected by...

Powers, Elizabeth; Williams, Dee
Powers, E.M., and Williams, D.M., 2020, Citizen science collaboration with the U.S. Geological Survey in Alaska: U.S. Geological Survey Fact Sheet 2020-3026, 2 p., https://doi.org/10.3133/fs20203026.

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Year Published: 2020

A 36-year record of rock avalanches in the Saint Elias Mountains of Alaska, with implications for future hazards

Glacial retreat and mountain-permafrost degradation resulting from rising global temperatures have the potential to impact the frequency and magnitude of landslides in glaciated environments. Several recent events, including the 2015 Taan Fiord rock avalanche, which triggered a tsunami with one of the highest wave runups ever recorded, have called...

Erin K. Bessette-Kirton; Coe, Jeffrey A.

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Year Published: 2020

Selected geologic maps of the Kodiak batholith and other Paleocene intrusive rocks, Kodiak Island, Alaska

Kodiak Island in southern Alaska is one of the premier examples globally for the study of forearc magmatism. This location contains two Paleocene intrusive belts that formed due to the subduction of a migrating spreading ridge and slab-window: the Kodiak batholith and the trenchward magmatic belt. These magmatic rocks are part of the Sanak-Baranof...

Farris, David W.; Haeussler, Peter J.
Farris, D.W., and Haeussler, P.J., 2020, Selected geologic maps of the Kodiak batholith and other Paleocene intrusive rocks, Kodiak Island, Alaska: U.S. Geological Survey Scientific Investigations Map 3441, pamphlet 10 p., scale 1:50,000, https://doi.org/10.3133/sim3441.

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Year Published: 2020

Ground failure triggered by shaking during the November 30, 2018, magnitude 7.1 Anchorage, Alaska, earthquake

We developed an initial inventory of ground failure features from the November 30, 2018, magnitude 7.1 Anchorage earthquake. This inventory of 153 features is from ground-based observations soon after the earthquake (December 5–10) that include the presence or absence of liquefaction, landslides, and individual crack traces of lateral spreads and...

Grant, Alex R. R. ; Jibson, Randall W.; Witter, Robert C.; Allstadt, Kate E.; Thompson, Eric M.; Bender, Adrian M.
Grant, A.R.R., Jibson, R.W., Witter, R.C., Allstadt, K.E., Thompson, E.M., and Bender, A.M., 2020, Ground failure triggered by shaking during the November 30, 2018, magnitude 7.1 Anchorage, Alaska, earthquake: U.S. Geological Survey Open-File Report 2020–1043, 21 p., https://doi.org/10.3133/ofr20201043.

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Year Published: 2020

The role of seismic and slow slip events in triggering the 2018 M7.1 Anchorage earthquake in the Southcentral Alaska subduction zone

The M 7.1 2018 Anchorage earthquake occurred in the bending part of the subducting North Pacific plate near the geometrical barrier formed by the underthrusting Yakutat terrane. We calculate the triggering potential related with stress redistribution from deformation sources including the M 9.2 1964 earthquake coseismic slip,...

Segou, Margarita; Parsons, Thomas E.

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Year Published: 2020

Conservation genomics in a changing arctic

Although logistically challenging to study, the Arctic is a bellwether for global change and is becoming a model for questions pertinent to the persistence of biodiversity. Disruption of Arctic ecosystems is accelerating, with impacts ranging from mixing of biotic communities to individual behavioral responses. Understanding these changes is...

Colella, Jocelyn P.; Talbot, Sandra L.; Brochmann, Christian; Taylor, Eric B.; Hoberg, Eric P.; Cook, Joseph A.

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Year Published: 2020

USGS near-real-time products-and their use-for the 2018 Anchorage earthquake

In the minutes to hours after a major earthquake, such as the recent 2018 Mw">Mw 7.1 Anchorage event, the U.S. Geological Survey (USGS) produces a suite of interconnected earthquake products that provides diverse information ranging from basic earthquake source parameters to loss estimates. The 2018 Anchorage earthquake is the first...

Thompson, Eric M.; McBride, Sara; Hayes, Gavin P.; Allstadt, Kate; Wald, Lisa; Wald, David J.; Knudsen, Keith L.; Worden, Charles; Marano, Kristin; Jibson, Randall W.; Grant, Alex R. R.

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Year Published: 2020

Ground-motion amplification in Cook Inlet region, Alaska from intermediate-depth earthquakes, including the 2018 MW=7.1 Anchorage earthquake

We measure pseudospectral and peak ground motions from 44 intermediate‐depth Mw≥4.9">Mw≥4.9 earthquakes in the Cook Inlet region of southern Alaska, including those from the 2018 Mw">Mw 7.1 earthquake near Anchorage, to identify regional amplification features (⁠0.1–5  s">0.1...

Moschetti, Morgan P.; Thompson, Eric M.; Rekoske, John; Hearne, Mike; Powers, Peter M.; McNamara, Daniel E.; Tape, Carl

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Year Published: 2020

Plate boundary localization, slip-rates and rupture segmentation of the Queen Charlotte Fault based on submarine tectonic geomorphology

Linking fault behavior over many earthquake cycles to individual earthquake behavior is a primary goal in tectonic geomorphology, particularly across an entire plate boundary. Here, we examine the 1150-km-long, right-lateral Queen Charlotte-Fairweather fault system using comprehensive multibeam bathymetry data acquired along the Queen Charlotte...

Brothers, Daniel; Miller, Nathaniel C.; Vaughn Barrie; Haeussler, Peter; H. Gary Greene; Andrews, Brian D.; Olaf Zielke; Dartnell, Peter

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Year Published: 2019

The August 2018 Kaktovik earthquakes: Active tectonics in northeastern Alaska revealed With InSAR and seismology

The largest earthquakes recorded in northern Alaska (Mw 6.4 and Mw 6.0) occurred ~6 hours apart on August 12, 2018 in the northeastern Brooks Range. The earthquakes were captured by Sentinel-1 InSAR satellites and Earthscope Transportable Array seismic data, giving insight into the little-known active tectonic processes of Arctic Alaska, obscured...

Gaudreau, E.; Nissen, E.K.; Bergman, Eric A.; Benz, Harley M.; Tan, F.; Karasözen, E.

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Year Published: 2019

A ship's ballasting history as an indicator of foraminiferal invasion potential--An example from Prince William Sound, Alaska, USA

We investigated the potential role of ballast sediment from coastal and transoceanic oil tankers arriving and de-ballasting in Port Valdez as a vector for the introduction of invasive benthic foraminifera in Prince William Sound, Alaska. Forty-one ballast sediment samples were obtained in 1998-1999 from 11 oil tankers that routinely discharged...

McGann, Mary; Ruiz, Gregory M.; Hines, Anson H.; Smith, George D.

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Year Published: 2019

The 30 November 2018 Mw7.1 Anchorage Earthquake

The Mw">Mw 7.1 47 km deep earthquake that occurred on 30 November 2018 had deep societal impacts across southcentral Alaska and exhibited phenomena of broad scientific interest. We document observations that point to future directions of research and hazard mitigation. The rupture mechanism, aftershocks, and deformation of the...

West, Michael E.; Bender, Adrian; Gardine, Matthew; Gardine, Lea; Gately, Kara; Haeussler, Peter; Hassan, Wael; Meyer, Franz; Richards, Cole; Ruppert, Natalia; Tape, Carl; Thornley, John; Witter, Robert

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Shorebird on the tundra on the north slope of Alaska
March 16, 2020

This R script will run one example of the stochastic matrix models run by Weiser et al. (in review) to simulate shorebird populations. The model predicts population growth rates and elasticity values of vital rates. The example script is stand-alone and contains input values for one example species; input values for the other species are provided in the manuscript.

A DNA strand illustration
August 6, 2018

Bioinformatics software repository containing python scripts intended for search and download of genetic information obtained from GenBank NCBI genetics data resources in support of developing PCR primers, targeted genetic databases, genetic analyses, and data interpretation. Includes multiple functions to streamline this process.

Sea ice in the Chukchi Sea
July 25, 2017

Daily sea ice imagery and charting benefits logistics and navigational planning in the Alaskan Arctic waters, yet access to these data often requires high bandwidth data access and substantial GIS processing.

USGS
June 20, 2017

Cormack-Jolly-Seber (CJS) mark-recapture models are widely utilized in ecology, providing estimates of vital rates and abundance that are difficult to obtain using other means.

Polar bear still hunting at a seal breathing hole
June 20, 2017

Quantitative fatty acid signature analysis (QFASA; Iverson et al. 2004) has become a common method of estimating diet composition, especially for marine mammals, but the performance of the method has received limited investigation.

multicolored map of Ocean Shores, Washington
April 13, 2017

The Pedestrian Evacuation Analyst is an ArcGIS extension that estimates how long it would take for someone to travel on foot out of a hazardous area that was threatened by a sudden event such as a tsunami, flash flood, or volcanic lahar. It takes into account the elevation changes and the different types of landcover that a person would encounter along the way.

Kasilof coho salmon with radio tag antenna in it's mouth
January 10, 2017

Quantitative fatty acid signature analysis (QFASA) is a method of diet estimation introduced over a decade ago (Iverson et al. 2004). 

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Black Oystercatcher on Gull Island, Alaska
October 20, 2020

Black Oystercatcher on Gull Island, Alaska

Black Oystercatcher on Gull Island, Kachemak Bay, Alaska 

USGS scientists map river bathymetry around bridge piers in the Copper River Delta, Alaska
September 30, 2020

Mapping river bathymetry in the Copper River Delta, Alaska

USGS scientists Robin Beebee (left) and Jeff Conaway use a boat-mounted multibeam echosounder to map river bathymetry around bridge piers in the Copper River Delta of Alaska. The bathymetric mapping is part of a streambed scour study conducted in cooperation with the Alaska Department of Transportation and Public Facilities.

5 meter DEM - Recent Updates (Alaska only)
September 20, 2020

5 meter DEM - Recent Updates (Alaska only)

5 meter DEM - Recent Updates (Alaska only)

5 meter DEM - Availability (Alaska only)
September 20, 2020

5 meter DEM - Availability (Alaska only)

5 meter DEM - Availability (Alaska only)

Ifsar Digital Surface Model - Availability (Alaska only)
September 20, 2020

Ifsar Digital Surface Model - Availability (Alaska only)

Ifsar Digital Surface Model - Availability (Alaska only)

Pelagic cormorant, Gull Island, Kachemak Bay Alaska
August 24, 2020

Pelagic cormorant, Gull Island, Kachemak Bay Alaska

Pelagic cormorant, Gull Island, Kachemak Bay Alaska

Thick-billed Murres on the Pribilof Islands
August 24, 2020

Thick-billed Murres on the Pribilof Islands

Thick-billed Murres on the Pribilof Islands

August 7, 2020

Role of Infrasound in the USGS Eruption Response

Infrasound is an important tools for volcanologists, allowing them to detect eruptions, locate the source of explosions, and understand important parameters of volcanic events. John Lyons discusses how the technique is used by the USGS, especially in Alaska, and how we are working to help study infrasound around the world.
 

Walruses resting on an ice floe
June 3, 2020

Walruses resting on an ice floe

A group of Pacific walruses during summer in the Chukchi Sea

Glaucous-winged gull with externally attached GPS satellite transmitter
May 28, 2020

Glaucous-winged gull with externally attached GPS satellite transmitte

Glaucous-winged gull with externally attached GPS satellite transmitter, Soldotna, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska
May 15, 2020

Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska. Included is Barry Glacier and Cascade Glacier.

scientists collect field data at Gulkana Glacier
May 5, 2020

Collecting Field Data at Gulkana Glacier

USGS scientists collect field data at Gulkana Glacier in the eastern Alaska Range. The checkerboard sampling pattern in the foreground indicates where snow pit density measurements were collected. A series of snow cores (one is laying on top of the black tool box) collected by drilling into the seasonal snowpack will be used to measure the density at even deeper depths. If

...
Filter Total Items: 280
Image shows a map of Alaska with Earth MRI projects marked in colored polygons
September 28, 2020

A total of $634,000 will fund new research and preserve important data across the Last Frontier.

Photo of flowing glacier
August 18, 2020

A large steep slope in the Barry Arm fjord 30 miles (50 kilometers) northeast of Whittier, Alaska has the potential to fall into the water and generate a tsunami that could have devastating local effects on those who live, work, and recreate in and around Whittier and in northern Prince William Sound.

View the information provided by the State of Alaska, Natural Resources.

Map of Alaska showing estimated mineral-resource potential
August 17, 2020

We hope you enjoy and subscribe. Below are links to recent publications, data releases, and highlights of on-going research programs. In this issue we feature news on the Pacific marine heatwave, Alaska Earth Mapping Resources Initiative, and our Ecosystems Analytics group. See new additions to the Wildlife Tracking page, Data and tools and Publications.

Common Murres in their colony in Cook Inlet, Alaska. Adult touching bill to chick.
August 5, 2020

A story map, developed by the National Park Service, is based on a published article by John Piatt, Sarah Schoen and Mayumi Arimitsu at the U.S. Geological Survey Alaska Science Center in collaboration with 20 coauthors from the USFWS, NPS, NOAA, UW, and other research organizations. It describes the massive seabird die-off in the north Pacific and the research findings on this event.

graph with squiggly lines of 4 colors
July 31, 2020

In a win-win situation for both seismologists and space physicists, a cheap magnetometer at a seismic station can result in better seismic data for earthquakes and also more geomagnetic data in real time for monitoring space weather.

Read the new Science for Everyone article: Auroras and Earthquakes: Strange Companions

Dragonfly larvae being held in an open hand
July 21, 2020

A team of federal, academic, and NGO researchers conducted a national-scale assessment of mercury bioaccumulation in aquatic ecosystems using dragonfly larvae as biosentinels.

Tyndall Glacier, Alaska
May 1, 2020

New research paper documents the dramatic change to the landscape following a massive landslide tsunami in Taan Fiord in 2015.

NLCD 2016 Alaska Land Cover
April 17, 2020

The latest edition of the National Land Cover Database (NLCD 2016) for Alaska is now publicly available.

Photo of USGS researchers using frost probes
March 23, 2020

Imagine, Neal Pastick says, if the infrastructure under your house disappeared. If the concrete forms or block basement walls disintegrated over time, and your house collapsed. That’s an apt analogy, Pastick says, to what’s happening with the degradation of permafrost in Alaska today.

A sitting polar bear holds a square tarp in its mouth, seeming to treat it like a toy.
December 31, 2019

On a far-away island along Alaska’s North Slope coast, conducting fieldwork can be challenging.

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