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: 205
Date published: March 17, 2016

Volcano Hazards Assessments Help Mitigate Disasters

The Volcano Hazards Program develops long-range volcano hazards assessments. These includes a summary of the specific hazards, their impact areas, and a map showing ground-hazard zones. The assessments are also critical for planning long-term land-use and effective emergency-response measures, especially when a volcano begins to show signs of unrest.

Date published: March 2, 2016

Alaska Volcano Observatory (AVO)

The AVO is a partnership among the USGS, the Geophysical Institute of the University of Alaska Fairbanks, and the Alaska Division of Geological and Geophysical Surveys. To mitigate volcanic hazards, AVO monitors and studies Alaska's hazardous volcanoes to forecast and record eruptive activity. AVO also monitors volcanic activity in the Commonwealth of the Northern Mariana Islands.

Date published: September 30, 2015
Status: Completed

Alaska Critical Minerals Cooperative

The project developed means to use several large legacy digital databases together in GIS to identify areas with mineral resource potential for critical minerals in Alaska.

Contacts: Timothy Hayes
Date published: September 30, 2015
Status: Completed

Alaska Geophysical Survey Interpretation

Available geophysical data for Alaska have not been fully exploited. Project objectives were to conduct systematic analysis of existing gravity, aeromagnetic and airborne electromagnetic data to map geologic trends, structural geologic and tectonic patterns, and identify key lithologies for direct integration with geologic framework and mineral potential studies.

Contacts: Bruce D Smith, Richard Saltus
Date published: June 1, 2015
Status: Completed

The "Snow Plow Theory"* of Early-Arriving Tsunamis

Release Date: JUNE 1, 2015

What is a splay fault, and how can they affect tsunamis?

* completely contrived term by this author, not a scientific term or theory

Date published: April 25, 2013
Status: Active

Webinar: From Icefield to Ocean: Impacts of Glacier Change in Alaska

Check out this webinar to learn more about glacial loss in the Gulf of Alaska.

Contacts: Shad O'Neel, Ph.D., Eran Hood
Date published: September 28, 2010
Status: Completed

COOK NAWQA Data Clearinghouse

This page will serve as the repository for data collected by the Cook Inlet Basin NAWQA team using NAWQA sampling protocols. Data sets collected using NAWQA protocols but not collected as part of the Cook Inlet Basin NAWQA program are identified with an asterisk (*). A list of ...

Contacts: Jeff Conaway
Date published: November 20, 2003
Status: Completed

Water Resources for Alaska GIS datasets Statewide Coverages

Legacy Data for AK Precipitation, Hydrologic Unit Map, and Streamflow analysis regions for AK and conterminous basins in Canada.

Contacts: Janet H Curran
Date published: November 15, 2001
Status: Completed

Alaska Ecoregions Mapping

Legacy Data: Ecoregions of Alaska

Date published: November 20, 2000
Status: Completed

Water Resources for Alaska GIS datasets Regional Coverages

Legacy Data for Water Resources for Alaska GIS datasets Regional Coverages

Contacts: Jeff Conaway
Date published: November 19, 1997
Status: Completed

High-Latitude Climate Transects

Legacy Data: High-Latitude Climate Transects

Filter Total Items: 213
Date published: April 19, 2016

The United States Interagency Elevation Inventory (USIEI)

The USIEI is a comprehensive, nationwide listing of known high-accuracy topographic and bathymetric data for the United States and its territories. The project is a collaborative effort of the USGS and NOAA with contributions from other federal agencies. The inventory supports the 3D Elevation Program and the Integrated Ocean and Coastal Mapping effort. This resource is updated in Spring and...

Date published: April 19, 2016

Elevation Data

The 3DEP products and services available through The National Map consist of lidar point clouds (LPC), 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.

Date published: April 18, 2016

Coastal and Marine Geology Video and Photography Portal

This portal contains U.S. Geological Survey (USGS) video and photography of the seafloor off of coastal California and Massachusetts, and aerial imagery of the coastline along segments of the Gulf of Mexico and mid-Atlantic coasts. These data were collected as part of several USGS Coastal and Marine Geology Program Seafloor Mapping projects and Hurricane and Extreme Storm research.

Date published: April 12, 2016

Orthoimagery Data

Orthoimagery data typically are high resolution aerial images that combine the visual attributes of an aerial photograph with the spatial accuracy and reliability of a planimetric map. The National Map offers public domain, 1-meter orthoimagery for the conterminous United States with many urban areas and other locations at 2-foot or finer resolution.

Date published: April 12, 2016

The National Map Small-Scale Collection

The National Map offers a collection of small-scale datasets, most of which are at 1:1,000,000. The National Map publishes two data collections at one million-scale: one for Global Map users and one for National Map users. In terms of vector geometry, the lines, points, and areas in these data collections are identical. The difference is in the attributes assigned to these features.

Date published: March 17, 2016

Volcano Monitoring Data

Many volcanoes in the U.S. are monitored by arrays of several instruments that detect subtle movements within the earth and changes in gas and water chemistry. The Volcano Hazards Program streams this data to its Volcano Observatories and makes it available on volcano-specific websites.

Date published: March 10, 2016

Alaska Volcano Observatory Satellite Data

This is a new tool for understanding and communicating risks. The activities include the development of risk models and approaches to improve the situational awareness of communities and industries to natural hazards and reduce the uncertainty of those risk assessments.

Attribution: Region 11: Alaska
Date published: March 10, 2016

Alaska Volcano Observatory - Is Ash Falling?

Reports of ash fall are important to us; we use your observations to assess the character and size of an eruption plume. We report these data to the National Weather Service so they can keep their Ashfall Advisories current. Additionally, reports of NO ashfall during an eruption with expected ashfall are also important to us.

Attribution: Region 11: Alaska
Date published: March 4, 2016

Current Alerts for U.S. Volcanoes

Volcano-alert notifications are produced by Volcano Observatory scientists based on analysis of data from monitoring networks, direct observations, and satellite sensors. They are issued for both increasing and decreasing volcanic activity and include text about the nature of the unrest or eruption and about potential or current hazards and likely outcomes.

Date published: January 1, 2016

Digital seafloor character data of the Gulf of Alaska from historical National Ocean Service (NOS) smooth sheets

This data release provides seafloor-characteristics point data across the Gulf of Alaska, as digitized directly from National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS) smooth sheets published from 1892 to 2001, and archived at the National Geophysics Data Center (NGDC). Geo-rectification and digitization methods were adapted from Zimmermann and Ben

Filter Total Items: 1,101
USGS ecologists map and monitor vegetation and landscape characteristics at long-term ecological monitoring sites on the YKD
July 7, 2018

USGS ecologists map monitor vegetation and landscape characteristics

USGS ecologists map and monitor vegetation and landscape characteristics at long-term ecological monitoring sites on the Yukon-Kuskokwim Delta, AK

A man wearing cold-weather gear and standing on a high coastal bluff points to an instrument that is mounted on short a pole.
July 5, 2018

Installing ground-shaking detection instrument

USGS scientist Cordell Johnson points to the Raspberry Shake, a sensitive instrument used to detect ground shaking. Johnson mounted the Raspberry Shake to an aluminum pole which he will then drive into the ground to bury the instrument beneath the tundra. This process will help isolate it from the wind.

A small instrument with a USGS logo sticker with wires coming out of it is in a hole in the ground.
July 5, 2018

Sensitive instrument used to detect ground shaking

This device, called a Raspberry Shake, is a sensitive instrument used to detect ground shaking. It is being carefully buried in this shallow hole in the tundra, to isolate it from wind.

View of muddy, eroding coastal bluffs with a visible permafrost layer and a tumbling tundra layer on top.
July 3, 2018

Eroding bluffs in Kaktovik

View looking east of the actively eroding coastal permafrost bluff on Barter Island, which is located on the northern coast of Alaska.

View of muddy, eroding coastal bluffs with a visible permafrost layer and tumbling tundra on top.
July 3, 2018

Actively eroding coastal permafrost bluff on Barter Island

Photograph of the actively eroding coastal permafrost bluff on Barter Island, located on the northern coast of Alaska.

Two people stand atop a coastal cliff where the grassy edges are beginning to fall off onto the beach below.
July 3, 2018

Barter Island coastal bluff studies

Scientists Cordell Johnson, left, and Li Erikson stand atop the coastal bluff of Barter Island in northern Alaska, a coastal area that is experiencing very high rates of erosion.

Two birds grabbing fish out of the ocean
June 28, 2018

Black-legged Kittiwakes forage on Pacific sand lance and capelin

Black-legged Kittiwakes forage on Pacific sand lance and capelin near their colony on Gull Island, Cook Inlet on June 28, 2018. 

Spawning Yukon River Chinook salmon
June 20, 2018

Spawning Yukon River Chinook salmon

A spawning Yukon River Chinook salmon (Oncorhynchus tshawytscha) captured near Pilot Station, Alaska, in June 2018 as part of an experimental temperature manipulation study to validate heat stress biomarkers.

A female McKay's Bunting songbird standing on the ground
June 17, 2018

Female McKay's Bunting on St. Matthew Island

Female McKay's Bunting on St. Matthew Island.

A male McKay's Bunting songbird sitting on a rock
June 14, 2018

Male McKay's Bunting on St. Matthew Island

Male McKay's Bunting on St. Matthew Island

Fog on Yukon River
May 29, 2018

Fog on Yukon River

Fog along the Yukon River showing a Black Spruce dominated forest in the foreground, which is prone to wildfire.  Photo by Bruce Wylie, USGS

Large instruments waiting to loaded on a boat
May 7, 2018

Loading ocean bottom seismometers for deployment in the Gulf of Alaska

Ocean bottom seismometers being loaded onto the R/V Sikuliaq to be deployed on the sea floor in the Gulf of Alaska.

Filter Total Items: 283
USGS science for a changing world logo
August 6, 2009

When Alaska's Kasatochi Volcano erupted on Aug. 7, 2008, it virtually sterilized Kasatochi Island, covering the small Aleutian island with a layer of ash and other volcanic material several meters thick.
The eruption also provided a rare research opportunity: the chance to see how an ecosystem develops from the very first species to colonize the island.

USGS science for a changing world logo
April 9, 2009

The Pacific Ocean is the largest of the world's oceans, but relatively impoverished in many natural resources, particularly oil and gas. It is the home to a large fisheries industry that is seemingly in peril, and the place itself, a peaceful namesake, can erupt into cataclysmic disasters on a moment's notice.

USGS science for a changing world logo
April 6, 2009

Alaska's Redoubt Volcano continues to emit a plume of water vapor, gas and minor ash after its 19th successive explosion this past weekend. Scientists believe the volcano has entered a new period of cyclical lava dome growth marked by small earthquakes and intermittent tremors.

USGS science for a changing world logo
April 2, 2009

Scientists from the Alaska Volcano Observatory and the Unified Command will host a news conference at 1:00PM AKDT (5:00PM EASTERN TIME) at the USGS Alaska Science Center in the Glenn Olds Hall Conference Room, Anchorage, AK, to discuss the continuing eruption of Mount Redoubt Volcano.
High resolution photos are available on the Alaska Volcano Observatory, Redoubt Activity Web site.

USGS science for a changing world logo
March 27, 2009

Mount Redoubt Volcano, 106 miles southwest of Anchorage, Alaska, erupted explosively more than 10 times this week, sending ash skyrocketing as high as 65,000 feet into the air.
The eruption of Redoubt poses a threat to national and international aviation as volcanic ash is sent into the busy North Pacific flight paths between North America and Asia.

USGS science for a changing world logo
March 27, 2009

Scientists from the Alaska Volcano Observatory will host a news conference at 1:30PM AKDT (5:30PM EASTERN TIME) at the USGS Alaska Science Center in the Glenn Olds Hall Conference Room, Anchorage, AK, to discuss the continuing eruption of Mount Redoubt Volcano and yesterday's (March 26) overflight of the volcano.

USGS science for a changing world logo
March 26, 2009

Scientists from the Alaska Volcano Observatory will host a news conference at 1:30PM AKDT (5:30PM EASTERN TIME) at the USGS Alaska Science Center in the Glenn Olds Hall Conference Room, Anchorage, AK, to discuss the continuing eruption of Mount Redoubt Volcano.

USGS science for a changing world logo
March 24, 2009

Scientists from the Alaska Volcano Observatory will host a news conference at 12:00PM AKDT (4PM EASTERN TIME) at the USGS Alaska Science Center in the Glenn Olds Hall Conference Room, Anchorage, AK, to discuss the continuing eruption of Mount Redoubt Volcano.

USGS science for a changing world logo
March 18, 2009

The U.S. Geological Survey (USGS) will award up to $7 million in grants and cooperative agreements for earthquake research in 2010.
Interested researchers can apply online at GRANTS.GOV under the funding opportunity number 10HQPA0001. Applications are due May 13, 2009.

USGS science for a changing world logo
February 18, 2009

Coastal erosion has more than doubled in Alaska - up to 45 feet per year - in a 5-year period between 2002 and 2007 along a 40-mile stretch of the Beaufort Sea.

USGS science for a changing world logo
February 12, 2009

New b-roll footage of Alaska's Redoubt Volcano shows its current state of unrest, including vapor plumes emanating from holes in the newly deformed Drift Glacier near the volcano summit. This footage was shot from an aerial observation and gas measurement flight initiated in Anchorage.

USGS science for a changing world logo
January 30, 2009

As of Wednesday, February 4, 2009, the Alaska Volcano Observatory will discontinue holding daily briefings on the status of Redoubt Volcano until further notice. We will announce new briefings when significant information becomes available or the status of the volcano changes.