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: January 19, 2018
Status: Active

Broad-scale Research Conducted Across the 1002 Area and the NPR-A of Alaska

Selected Bibliography of Broad-scale Research Involving USGS and Conducted Across the 1002 Area and the NPR-A of Alaska

Compiled as of 12/17/2018

Date published: January 18, 2018
Status: Active

National Assessment of Coastal Vulnerability to Sea Level Rise

The original national coastal vulnerability index (CVI) assessment was motivated by expected accelerated sea-level rise (SLR) and the uncertainty in the response of the coastline to SLR. This research was conducted between 1999 and 2001, and is currently being updated using new data sources and methodology. This original study was part of the ...

Date published: January 18, 2018
Status: Active

Alaska Science Center Previous Seminars

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.

Listed below are previous seminars given.

Contacts: Yvette Gillies
Date published: January 18, 2018
Status: Active

Long-Term Coastal Change

Goals of this task include developing and improving coastal-change assessments and supporting long-term planning and decision making to ensure sustainable coastal economies, infrastructure, and ecosystems.

Date published: January 10, 2018
Status: Active

USGS Research Vessel Alaskan Gyre

The R/V Alaskan Gyre is a 50-foot fiberglass seiner that has been converted into a versatile research vessel to provide USGS scientists and collaborators with access to remote marine areas of Alaska and serve as a mobile laboratory.  The vessel was built by Ledford Marine of Marysville, Washington in 1989 and is named after the Alaskan Gyre, a series of wind driven currents that...

Date published: December 18, 2017
Status: Active

Polar Bear Maternal Denning

Pregnant polar bears enter maternity dens in October/November, give birth to cubs in December/January, and exit dens in March/April. Historically, most polar bears from the Southern Beaufort Sea (SBS) population constructed maternity dens on the sea ice.  Over the last three decades, as sea ice has become thinner and prone to fragmentation, there has been a landward shift in the distribution...

Date published: December 15, 2017
Status: Active

Distribution and Movements of Polar Bears

Polar bears are tied to the sea ice for nearly all of their life cycle functions. Most important of these is foraging, or access to food. Polar bears almost exclusively eat seals, and they are equally as dependent upon the sea for their nutrition as are seals, whales, and other aquatic mammals. Polar bears are not aquatic, however, and their only access to the seals is from the surface of the...

Date published: December 15, 2017
Status: Active

Polar Bear Population Dynamics

Information on the status and trends of polar bear populations are needed to inform management of polar bears under US laws and international agreements. The USGS maintains a long-term research program focused on the population dynamics of the southern Beaufort Sea polar bear population.  In addition, the USGS collaborates with the US Fish and Wildlife Service in population studies in the...

Date published: December 15, 2017
Status: Active

Health and Energetics of Polar Bears

Research in this focal area is centered on (i) collecting data on a variety of systems that help determine and mediate polar bear health and energetics, and (ii) developing monitoring and surveillance programs for detecting changes in population health over time. Additionally, this work will allow us to develop an understanding of how polar bear populations will respond to a variety of...

Date published: December 7, 2017
Status: Active

Chilkat River

Chilkat River is one of the transboundary watersheds of Southeast Alaska.

Contacts: Jeff Conaway
Date published: December 7, 2017
Status: Active

Alsek River

Alsek River is one of the transboundary watersheds of Southeast Alaska. 

Contacts: Jeff Conaway
Filter Total Items: 189
Date published: November 5, 2018

Brown Bear (Ursus acrtos) Captures and Serological Survey Results for Bacterial Viral and Parasitic Agents, Alaska, 2013-2016

Data set containing test results of screening blood and serum samples from five populations of Brown Bears in Alaska. Samples were tested to detect current or previous exposure to bacteria (Brucella spp., Francisella tularensis, and Leptospira spp.), viruses (canine adenovirus, canine distemper virus, canine parvovirus, and influenza A virus), and parasites (Toxoplasma gon

Date published: August 28, 2018

USGS Domestic Continuous (Unconventional) Oil & Gas Assessments, 2000-Present

Interactively explore assessment summary information for continuous (unconventional) assessments conducted at the USGS from 2000-2018. The assessment results data used to generate this visualization can be downloaded here in Excel Format.  These data represent all assessment results...

Date published: June 19, 2018

Alaska Resource Data File

The Alaska Resource Data File (ARDF) site provides descriptions of mines, prospects, and mineral occurrences for individual U.S. Geological Survey 1:250,000-scale quadrangles in Alaska.

Date published: May 4, 2018

USGS StreamStats for the Cook Inlet Basin

StreamStats version 4 is a Web application that provides access to an assortment of Geographic Information Systems (GIS) analytical tools that are useful for water-resources planning and management, and for engineering and design purposes.

Date published: March 7, 2018

Database of significant deposits of gold, silver, copper, lead, and zinc in Alaska

This data release provides descriptions and locations of 134 significant deposits in Alaska. Approximately 99 percent of past production and remaining identified resources of gold, silver, copper, lead, and zinc in the United States are accounted for by deposits that originally contained at least 2 metric tons (t) of gold, 85 t silver, 50,000 t copper, 30,000 t lead, and 5

Date published: February 14, 2018

Multichannel sparker seismic-reflection data of field activity 2016-656-FA; between Icy Point and Dixon Entrance, Gulf of Alaska from 2016-08-07 to 2016-08-26

This data release contains high-resolution multichannel seismic (MCS) reflection data collected in August of 2016 along the southeast Alaska continental margin. Structure perpendicular MCS profiles were collected along the Queen Charlotte-Fairweather fault. The data were collected aboard the R/V Norseman using a Delta sparker sound source and recorded on a 64-channel digital streamer...

Date published: February 1, 2018

Normalized Difference Vegetation Index, Biomass, and Nitrogen Content of Goose Forage, Northern Alaska, 2011-2018

This data set contains four tables of information regarding the sampling of plant biomass, nitrogen, cumulative thaw degree days, precipitation, and Normalized Difference Vegetation Index (NDVI) for the Colville River Delta and Point Lonely area of northern Alaska.

Date published: January 1, 2018

Fire impacts on permafrost in Alaska: Geophysical and other field data collected in 2015

Fire can be a significant driver of permafrost change in boreal landscapes, altering the availability of soil carbon and nutrients that have important implications for future climate and ecological succession. However, not all landscapes are equally susceptible to fire-induced change. As fire frequency is expected to increase in the high latitudes, methods to understand the vulnerability an...

Date published: January 1, 2018

Imaging spectrometer reflectance data, mineral predominance map, and white mica wavelength position map, Nabesna Quadrangle, Alaska

Approximately 1,900 square kilometers of imagery were collected from July 14 to July 21, 2014 using a HyMap™ sensor (Cocks and others, 1998) mounted on a modified Piper Navajo aircraft. The survey area covered parts of the Wrangell and Nutzotin Mountains in the eastern Alaska Range near Nabesna, Alaska. The aircraft was flown at an altitude of approximately 5,050 meters (m

Date published: January 1, 2018

Measures of Oxygen Consumption and Stroke Frequency of a Captive Subadult Female Polar Bear (Ursus maritimus) while Resting in Water and Swimming and Diving in a Metabolic Water Flume, Oregon Zoo, 2017

This dataset contains measures of oxygen consumption and stroke frequency from 1 captive subadult female polar bear (166.5 kg) resting in the water (n = 7 sessions) and swimming and diving in a metabolic swim flume with water circulated at approximately 0.6 km/hr during swimming and diving measurements (n = 6 sessions) in September 2017.

Date published: January 1, 2018

Corescan© Hyperspectral Core Imager, Mark III system data collected for the characterization of mineral resources near Nabesna, Alaska, 2014-2016

Corescan© Hyperspectral Core Imager Mark III (HCI-III) system data were acquired for hand samples, and subsequent billets made from the hand samples, collected during the U.S. Geological Survey (USGS) 2014, 2015, and 2016 field seasons in the Nabesna area of the eastern Alaska Range. This area contains exposed porphyry deposits and hand samples were collected throughout the r

Date published: January 1, 2018

USGS Alaska Petroleum Systems Project: Northern Alaska Province, Nanushuk and Torok Formations Assessment Units and Assessment Input Forms

The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown herein as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and incorporates...

Filter Total Items: 135
Publication Thumbnail
Year Published: 1966

The Alaska earthquake, March 27, 1964: regional effects

This is the third in a series of six reports that the U.S. Geological Survey published on the results of a comprehensive geologic study that began, as a reconnaissance survey, within 24 hours after the March 27, 1964, Magnitude 9.2 Great Alaska Earthquake and extended, as detailed investigations, through several field seasons. The 1964 Great...

McCulloch, David S.; Tuthill, Samuel J.; Laird, Wilson M.; Case, J.E.; Barnes, D.F.; Plafker, George; Robbins, S.L.; Kachadoorian, Reuben; Ferrians, Oscar J.; Foster, Helen L.; Karlstrom, Thor N.V.; Kirkby, M.J.; Kirkby, Anne V.; Stanley, Kirk W.
The Alaska earthquake, March 27, 1964: regional effects; 1966; PP; 543; McCulloch, David S.; Tuthill, Samuel J.; Laird, Wilson M.; Case, J.E.; Barnes, D.F.; Plafker, George; Robbins, S.L.; Kachadoorian, Reuben; Ferrians, Oscar J., Jr.; Foster, Helen L.; Karlstrom, Thor N.V.; Kirkby, M.J.; Kirkby, Anne V.; Stanley, Kirk W.

Publication Thumbnail
Year Published: 1965

Effects of the earthquake of March 27, 1964, at Anchorage, Alaska: Chapter A in The Alaska earthquake, March 27, 1964: effects on communities

Anchorage, Alaska’s largest city, is about 80 miles west-northwest of the epicenter of the March 27 earthquake. Because of its size, Anchorage bore the brunt of property damage from the quake; it sustained greater losses than all the rest of Alaska combined. Damage was caused by direct seismic vibration, by ground cracks, and by landslides. Direct...

Hansen, Wallace R.
Effects of the earthquake of March 27, 1964, at Anchorage, Alaska: Chapter A in The Alaska earthquake, March 27, 1964: effects on communities; 1965; PP; 542-A; The Alaska earthquake, March 27, 1964: effects on communities (Professional Paper 542); Hansen, Wallace R.

Publication Thumbnail
Year Published: 1965

Effects of the earthquake of March 27, 1964, at Whittier, Alaska: Chapter B in The Alaska earthquake, March 27, 1964: effects on communities

Whittier, Alaska, lying at the western end of Passage Canal, is an ocean terminal of The Alaska Railroad. The earthquake that shook south-central Alaska at 5:36 p.m. (Alaska Standard Time) on March 27, 1964, took the lives of 13 persons and caused more than $5 million worth of damage to Government and private property at Whittier. Seismic motion...

Kachadoorian, Reuben
Effects of the earthquake of March 27, 1964, at Whittier, Alaska: Chapter B in The Alaska earthquake, March 27, 1964: effects on communities; 1965; PP; 542-B; The Alaska earthquake, March 27, 1964: effects on communities (Professional Paper 542); Kachadoorian, Reuben

Filter Total Items: 1,083
AK CASC and USGS researchers select a field site.
December 31, 2018

Tree ring research in Alaska

AK CASC and USGS researchers select a field site.

Researchers examine tree rings for anomalies.
December 31, 2018

Tree ring research in Alaska

Researchers examine tree rings for anomalies.

Landsat animation of change in Twelvemile Lake, in the Yukon Flats ecoregion in Alaska
December 31, 2018

Twelvemile Lake - Change Over Time

Animation of Twelvemile Lake in the Yukon Flats ecoregion in Alaska, created using USGS Landsat data.

Thawing permafrost on various peatlands in Alaska.
December 31, 2018

Thawing Permafrost, Alaska

Thawing permafrost on various peatlands in Alaska. Permafrost thaw results in ground subsidence and inundation that kills black spruce and other understory plants living on the permafrost plateau. The black spruce forests found on permafrost plateaus are replaced with sedge- and moss-dominated bogs and fens, altering the ecosystem structure and function.

December 31, 2018

Polar Bears Film Their Own Sea Ice World

This video showcases the latest polar bear point-of-view footage to date along with an interview of the research scientist who is responsible for the project. Released in conjunction with a new scientific study led by the USGS. 
 

Scientist extract a sediment core from the permafrost plateaus in Alaska
December 31, 2018

Collecting Cores in Thawing Permafrost, Alaska

Cores were collected from various areas of thawing permafrost-peatlands in Alaska. Permafrost thaw results in ground subsidence and inundation that kills black spruce and other understory plants living on the permafrost plateau. 

house next to landslide with snowcovered ground
December 31, 2018

Landslide near Potter Hill, Anchorage, Alaska

Landslide near Potter Hill, Anchorage, Alaska, after 2018 Anchorage earthquake.

December 20, 2018

Image of the Week - Letters to the North Pole

Unlike the South Pole, the geographic North Pole does not lie on a land mass. The Earth’s northern axis of rotation is in the Arctic Ocean, covered by shifting sea ice.

Landsat does not image the North Pole, which makes it an imperfect investigative tool for the detection of Santa’s workshop. 

It does, however, collect imagery over North Pole, Alaska, a small

December 13, 2018

Aquatic Ecosystem Vulnerability to Fire and Climate Change

Fire is the dominant ecological disturbance process in boreal forests (coniferous forests consisting mostly of pines, spruces, and larches) and fire frequency, size and severity are increasing in Alaska owing to climate warming. However, interactions among fire, climate, permafrost, vegetation and hydrologic and watershed processes are poorly understood, yet critical for

2018 Potter Hill landslide 2, Anchorage, AK
December 7, 2018

2018 Potter Hill landslide 2, Anchorage, AK

Landslide from bluff below rail grade north of Rabbit Creek. Main scarp of slump/flow slide at Potter Hill. Railroad grade is to the left, tidal flat to the right. Note ponded drainage and disrupted slide material.

2018 Anchorage Earthquake

Chugiak extensional cracks, Chugiak, AK
December 5, 2018

Chugiak extensional cracks, Chugiak, AK

Extensional cracking and settling around private residence in Chugiak.

2018 Anchorage Earthquake

Ground crack at Sunset Park, Anchorage, AK
December 4, 2018

Ground crack at Sunset Park, Anchorage, AK

Crack observed in 2018 along headscarp of 1964 Government Hill landslide.

2018 Anchorage Earthquake

Filter Total Items: 279
USGS
March 27, 2014

Ever since the great magnitude 9.2 earthquake shook Alaska 50 years ago today, scientists have suspected that the quake's rupture halted at the southwestern tip of Kodiak Island due to a natural barrier.

USGS science for a changing world logo
March 20, 2014

Why does the 1964 Great Alaska Earthquake Matter 50 Years Later? Scientific experts will talk about a half-century of scientific and monitoring advances triggered by the 1964 events.

Houses damaged in the 1964 earthquake
March 19, 2014

The U.S. Geological Survey has released two new videos about the Great Alaska Earthquake of March 27, 1964 to commemorate the upcoming 50th anniversary of the largest earthquake ever recorded in the United States. The videos include rare vintage film footage and photos of the earthquake damage, combined with modern interviews with some of the same scientists who first investig

Uplifted sea floor at Cape Cleare on Montague Island in Prince William Sound.
March 18, 2014

To commemorate the upcoming 50th anniversary of the largest earthquake ever recorded in the United States, the U.S. Geological Survey has reissued a series of landmark reports covering the results of investigations of the Great Alaska Earthquake of March 27, 1964.

USGS science for a changing world logo
March 11, 2014

A recent U.S. Geological Survey-led study of the bar-tailed godwit, a shorebird known famously as the ultimate marathon champion of bird flight, suggests that these birds can sense broad weather patterns and optimally time their long, nonstop, transoceanic migrations to destinations thousands of miles away. 

Sea otter in kelp
February 28, 2014

Nearly 25 years after the Exxon Valdez oil spill injured wildlife off the coast of Alaska, a new report issued today by the U.S. Geological Survey indicates that sea otters have returned to pre-spill numbers within the most heavily oiled areas of Prince William Sound.

1964 Great Alaska Earthquake flyer thumbnail
February 24, 2014

On March 27th, 1964, the second largest instrumentally recorded earthquake worldwide rocked southern Alaska for 4 to 5 minutes. In addition to the earthquake, the event triggered a major tsunami that caused casualties and damage from the Kodiak Islands to northern California.

USGS science for a changing world logo
February 20, 2014

It's 1964 in Alaska. Imagine 4.5 minutes of powerful ground shaking underneath you from a magnitude 9.2 earthquake. You and your loved ones are then faced with resulting landslides and a devastating tsunami. You just experienced the largest earthquake ever recorded in North America. 

Photo of Santa Fe, New Mexico 2013 United States Topo map
January 22, 2014

The USGS, in cooperation with other Federal agencies, has posted new Idaho US Topo quadrangles (1,193) and New Mexico quads (1,980 maps) which include Public Land Survey System (PLSS). These are added to the growing list of states west of the Mississippi River to have PLSS data added to US Topo maps.

Image: Black Brant Geese
January 21, 2014

Scientists with the U.S. Geological Survey report that warming temperatures are leading to the creation of high quality habitats for geese along the Arctic coast of Alaska. This scientific finding is contrary to the deleterious effects that warming global temperatures are having on habitats of sea ice-dependent animals, such as polar bear and walrus.

A view of snow-covered Akutan Volcano.
January 9, 2014

Akutan Island, in Alaska’s east-central Aleutian Islands, hosts the City of Akutan and is home to the largest seafood production facility in North America. It also hosts Akutan Volcano, one of the most active volcanoes in the U.S.

Image: Banding Together to Learn and Preserve
November 21, 2013

25 Years of Goose Banding and Conservation through Federal and Tribal Partnership on the Yukon-Kuskokwim Delta in Western Alaska