Unified Interior Regions

Alaska

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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.

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News

Date published: May 1, 2020

Fan deltas could preserve evidence of landslide-triggered tsunamis

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

Date published: April 17, 2020

New Land Cover Maps Depict 15 Years of Alaska Change

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

Date published: March 23, 2020

Mapping Near-Surface Permafrost: EROS Work Important for Studying Arctic

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.

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Brownlow Point, Alaska Shoreline position
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...

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 2, 2020
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
Distant view of Denali
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.

...

A building after an earthquake has crumbled the roof and brick walls, the interior is now visible.
Date Published: May 1, 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...

Scientist prepares to go sample Alaskan lake
Date Published: March 25, 2020
Status: Active

Past Perspectives of Water in the West

In the intermountain west, seasonal precipitation extremes, combined with population growth, are creating new challenges for the management of water resources, ecosystems, and geologic hazards. This research contributes a comprehensive long-term context for a deeper understanding of past hydrologic variability, including the magnitude and frequency of drought and flood extremes and ecosystem...

Bruce Wylie with graphic for USGS EROS podcast Eyes on Earth
Date Published: March 23, 2020
Status: Active

Eyes on Earth Episode 20 - Mapping Alaska's Permafrost

Eyes on Earth is a podcast on remote sensing, Earth observation, land change and science, brought to you by the USGS Earth Resources Observation and Science (EROS) Center. In this episode, we hear about efforts to map near surface permafrost across Alaska and why such efforts are...

Contacts: Janice Nelson
Male Surf Scoter
Date Published: March 18, 2020
Status: Active

Tracking Data for Surf Scoter (Melanitta perspicillata)

Available here are tracking data of Surf Scoter, a duck species that breeds throughout higher latitudes of Alaska and Canada and winters along coastal areas of North America. These data were collected to better understand the timing and patterns of migratory movements between breeding and wintering areas.

Black Scoter in Dutch Harbor, Alaska
Date Published: March 12, 2020
Status: Active

Tracking Data for Black Scoter (Melanitta americana)

Available here are tracking data of Black Scoter, a duck species that breeds throughout higher latitudes of Alaska and Canada and winters along coastal areas of North America. These data were collected to better understand the timing and patterns of migratory movements between breeding and wintering areas.

Image: Pacific Loon (Gavia pacifica)
Date Published: February 20, 2020
Status: Active

Tracking Data for Pacific Loons (Gavia pacifica)

Available here are tracking data of Pacific Loons, a species that breeds throughout much of Alaska and winters throughout the Pacific Ocean basin, along the costs of East Asia and the U.S.  These data were collected to better understand timing of spring arrival, fall departure, and habitat use patterns on the North Slope of Alaska.

Aerial photograph looking at an eroding bluff on an arctic island with ponded water, green grass, and dying grass.
Date Published: February 14, 2020
Status: Active

Climate impacts to Arctic coasts

The Arctic region is warming faster than anywhere else in the nation. Understanding the rates and causes of coastal change in Alaska is needed to identify and mitigate hazards that might affect people and animals that call Alaska home.

NPPSD V3 Map showing sum of area sampled 2013-2019
Date Published: February 10, 2020
Status: Active

NPPSD Sampling Effort Maps

Maps showing the sampling extent in the North Pacific Pelagic Seabird Database (NPPSD).

View of a coastline from a camera that changes every half hour, with calm waters and tundra in foreground.
Date Published: January 30, 2020
Status: Active

Using Video Imagery to Study Wave Dynamics: Unalakleet

Two video cameras overlook the coast from atop a windmill tower in Unalakleet, Alaska where they look westward over Norton Sound.

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A shorebird walking along the shore
May 20, 2020

This data set contains information (in two tables) on nesting habitat and nest survival for American (Pluvialis dominica) and Pacific (P. fulva) Golden-Plovers monitored at seven study sites across an elevational gradient (28−416 m) on the Seward Peninsula in northwestern Alaska during the summers of 2012 and 2013. We used principal components analysis to reduce habitat me

Sea Otter
May 13, 2020

The data package "Sea Otter Aerial Survey Data from Southeast Alaska, 2002-2003" provides raw data for examining abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in Southeast Alaska, based on data collected during a series of population-wide aerial surveys. The USGS aerial sea otter surveys have been completed multiple times using consistent methodology invol

Canada Goose
May 4, 2020

The dataset consists of a polygon shapefile. Each polygon represents a set of molt units (interconnected lakes used as habitat by molting waterfowl) within the Goose Molting Area of the Teshekpuk Lake Special Area in northern Alaska, in addition to a half-mile or 1-mile wide buffer, that were selected for restrictions on new surface occupancy or infrastructure development by the oil and g

USGS staff diving in Chincoteague Bay, MD
April 27, 2020

This data set is comprised of one table with sampling information and NCBI BioProject accession numbers for sequence information of this amplicon-based study targeting Labyrinthula, Phytophthora, and Halophytophthora of known pathogenic and non-pathogenic [to eelgrass (Zostera marina)] strains from eDNA samples. eDNA samples included water, sediment, and eelgrass from Izembek Lag

Steller's Eider in Dutch Harbor, Alaska
April 27, 2020

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

Map of a water inlet along a coastline, with lines drawn on the water to show the path of a ship survey.
April 22, 2020

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 seismic-reflection

USGS
April 22, 2020

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.

USGS
April 22, 2020

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

USGS
April 21, 2020

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.

A stream in the Agashashok River drainage
April 17, 2020

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

Sea Otter
March 27, 2020

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

Sea Otter
March 26, 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

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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.

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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

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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Year Published: 2019

Alaska Geochemical Database Version 3.0 (AGDB3)—Including “Best Value” Data Compilations for Rock, Sediment, Soil, Mineral, and Concentrate Sample Media

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...

Granitto, Matthew; Wang, Bronwen; Shew, Nora B.; Karl, Susan M.; Labay, Keith A.; Werdon, Melanie B.; Seitz, Susan S.; Hoppe, John E.
Granitto, M., Wang, B., Shew, N.B., Karl, S.M., Labay, K.A., Werdon, M.B., Seitz, S.S., and Hoppe, J.E., 2019, Alaska Geochemical Database Version 3.0 (AGDB3)—Including “best value” data compilations for rock, sediment, soil, mineral, and concentrate sample media: U.S. Geological Survey Data Series 1117, 33 p., https://doi.org/10.3133/ds1117.

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Year Published: 2019

Catalog of earthquake parameters and description of seismograph and infrasound stations at Alaskan volcanoes—January 1, 2013, through December 31, 2017

Between January 1, 2013, and December 31, 2017, the Alaska Volcano Observatory (AVO) located a total of 28,172 earthquakes at volcanoes in Alaska. The annual totals are 3,840, 5,819, 5,297, 6,151, and 7,065 earthquakes for the years 2013 through 2017, respectively. This represents an average of 5,634 earthquakes per year, which is comparable to...

Dixon, James P.; Stihler, Scott D.; Haney, Matthew M.; Lyons, John J.; Ketner, Dane M.; Mulliken, Katherine M.; Parker, Thomas; Power, John A.
Dixon, J.P., Stihler S.D., Haney, M.M., Lyons, J.J., Ketner, D.M., Mulliken, K.M., Parker, T., and Power, J.A., 2019, Catalog of earthquake parameters and description of seismograph and infrasound stations at Alaskan volcanoes—January 1, 2013, through December 31, 2017: U.S. Geological Survey Data Series 1115, 92 p., https://doi.org/10.3133/ds1115.

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Year Published: 2019

An initial assessment of areas where landslides could enter the West Arm of Glacier Bay, Alaska and implications for tsunami hazards

Tsunamis generated by landslides in Glacier Bay are uncommon, but have potential to be extraordinarily destructive when they occur. This article identifies areas that are susceptible to landslides that could generate tsunamis and discusses approaches to characterize hazard and risk from these events.

Coe, Jeffrey A.; Schmitt, Robert G.; Bessette-Kirton, Erin

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Year Published: 2019

Crustal architecture beneath the southern Midcontinent (USA) and controls on Mesoproterozoic iron-oxide mineralization from 3D geophysical models

Several types of critical mineral-bearing ore deposits in the southern Midcontinent region of the U.S. are hosted in Mesoproterozoic igneous rocks largely concealed beneath Paleozoic cover. Discerning the architecture of igneous intrusions and volcanic centers in the crust is fundamental to understanding the geologic evolution of this vast region...

McCafferty, Anne E.; Phillips, Jeffrey D.; Hofstra, Albert H.; Day, Warren C.
McCafferty, A.E., Phillips, J.D., Hofstra, A.H., and Day, W.C., 2019, Crustal architecture beneath the southern Midcontinent (USA) and controls on Mesoproterozoic iron-oxide mineralization from 3D geophysical models: Ore Geology Reviews, v. 111, 21 p.

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Year Published: 2019

Investigating lake-area dynamics across a permafrost-thaw spectrum using airborne electromagnetic surveys and remote sensing time-series data in Yukon Flats, Alaska

Lakes in boreal lowlands cycle carbon and supply an important source of freshwater for wildlife and migratory waterfowl. The abundance and distribution of these lakes are supported, in part, by permafrost distribution, which is subject to change. Relationships between permafrost thaw and lake dynamics remain poorly known in most boreal regions....

Rey, David; Walvoord, Michelle Ann; Minsley, Burke; Rover, Jennifer; Singha, Kamini

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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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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

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Argos Wildlife Tracking Surf Scoter animation
March 18, 2020

Argos Wildlife Tracking Surf Scoter animation

Illustrates where Surf Scoters were tracked using Argos Wildlife Tracking.

Argos Wildlife Tracking Black Scoters animation
March 18, 2020

Argos Wildlife Tracking Black Scoters animation

Illustrates where Black Scoters were tracked using Argos Wildlife Tracking.

Aerial photograph showing a fiord and bay area, labeled with features like fan deltas from rivers.
March 15, 2020

Overview of Taan Fiord

Overview of Taan Fiord. Inset showing location of Taan Fiord, Alaska in Wrangell St. Elias National Park and Preserve. Taan Fiord is about 100 km from the nearest town, Yakutat, AK. Landsat 8 image of Taan Fiord acquired in 2016. Vegetation loss is clear near the water line. The evacuated subaerial landslide area and runout are visible to the left of the fjord head.

...
March 1, 2020

FBGC Quaternary Wetlands and Permafrost Research (AD)

This video explains how scientists from the Florence Bascom Geoscience Center research paleo-environmental wetland conditions and explain how studying these environments is valuable to better understand past changes and responses to disturbance, such as fire, sea-level rise, and permafrost

March 1, 2020

FBGC Quaternary Wetlands and Permafrost Research

This video explains how scientists from the Florence Bascom Geoscience Center research paleo-environmental wetland conditions and explain how studying these environments is valuable to better understand past changes and responses to disturbance, such as fire, sea-level rise, and permafrost

March 1, 2020

Arctic Sea Ice Research at USGS Florence Bascom Geoscience Center (AD)

This video introduces research that Florence Bascom Geoscience Center (FBGC) scientists are conducting on the 500,000 year history of Arctic sea ice to assess changes in weather, sea ice extent, temperature and ecosystems. The research informs decision makers on

March 1, 2020

Arctic Sea Ice Research at the USGS Florence Bascom Geoscience Center

This video introduces research that Florence Bascom Geoscience Center (FBGC) scientists are conducting on the 500,000 year history of Arctic sea ice to assess changes in weather, sea ice extent, temperature and ecosystems. The research informs decision makers on

Argos Wildlife Tracking Pacific Loon
February 20, 2020

Argos Wildlife Tracking Pacific Loon

Illustrates the where of all Pacific Loons that were tracked using Argos Wildlife Tracking.

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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.

A bull caribou grazes in autumn at the Lake Clark National Park and Preserve in Alaska
December 18, 2019

Caribou, North America’s wild reindeer, have lives apart from their famous role on Christmas Eve. 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 35 years.

A stream winding through polygonal ground on the Arctic Coastal Plain
December 10, 2019

The USGS Alaska Science Center is now embarking on the next 5-year (FY2020 – 2024) research plan of the Changing Arctic Ecosystems Initiative.

house next to landslide with snowcovered ground
October 25, 2019

"Major landslides triggered by the 1964 magnitude 9.2 Great Alaska earthquake responded to, but were not reactivated by, the magnitude 7.1 Anchorage earthquake that took place  30 November 2018, researchers concluded in a new study published in Seismological Research Letters."

Read full story on SSA website.

Color photo of research team near Faribanks, Alaska
October 15, 2019

In the Arctic, there are lakes where the bubbles will burn.

The bubbles are filled with methane gas. The flammable archaeal belches form as microbes feast on stores of long-frozen organic matter, freed up for decomposition thanks to permafrost thawing somewhere deep beneath the lakebed.

water with snow-covered mountains around
August 22, 2019

A new "Science for Everyone" article summarizes a recent publication about the potential of landslide-triggered tsunamis in Glacier Bay National Park and Preserve.

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