Unified Interior Regions

Alaska

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Filter Total Items: 195
Polar bear appears to walk on top of rippled gray water. Just behind it are very large breaking waves below a gray-blue sky.
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...

Polar bear still hunting at a seal breathing hole
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...

Chilkat River
Date Published: December 7, 2017
Status: Active

Chilkat River

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

Contacts: Jeff Conaway
Alsek River with helicopter landed next to it
Date Published: December 7, 2017
Status: Active

Alsek River

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

Contacts: Jeff Conaway
Unuk River
Date Published: December 7, 2017
Status: Active

Unuk River Super Gage

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

Contacts: Jeff Conaway
Stikine River
Date Published: December 7, 2017
Status: Active

Stikine River

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

Contacts: Jeff Conaway
Taku River
Date Published: December 7, 2017
Status: Active

Taku River

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

Contacts: Jeff Conaway
Salmon River
Date Published: December 7, 2017
Status: Active

Salmon River

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

Contacts: Jeff Conaway
Southeast Alaska Transboundary Map rivers
Date Published: November 29, 2017
Status: Active

USGS Transboundary River Monitoring in Southeast Alaska

The quantity and quality of streamflow in transboundary watersheds of Southeast Alaska are important to many stakeholders. Development and operation of several mines in Canada have increased the interest in current and future conditions in these watersheds. The USGS Alaska Science Center operates streamflow information stations on the Alsek, Chilkat, Taku, Stikine, and Unuk Rivers. Real-time...

Contacts: Jeff Conaway
Alaska Geologic Map
Date Published: October 30, 2017
Status: Completed

Geologic Map of Alaska

In January 2016, the U.S. Geological Survey released the first ever digital geologic map of Alaska. This map reflects more than a century of work and provides a visual context for the abundant mineral and energy resources found throughout the state. The map also is available to use in three different formats: a professional GIS database, a public interactive version via a web browser, and an...

Image: Sea Otter Ready for a Nap
Date Published: October 30, 2017
Status: Active

Pacific Nearshore Project

Sea otters are crucial indicators of the health of our nearshore waters and coastal resources, from kelp forests to fisheries. What clues does the sea otter's decline hold for our knowledge of ecosystem and global change? WERC's sea otter team and U.S. and Canadian researchers have teamed together to investigate. 

Relevance to USGS Missions:

This research project has direct...

placeholder for data files
Date Published: September 5, 2017
Status: Active

Alaska Science Center Data Policy

The Data Policy for ASC staff and contractors requires that research data, computational models, software and scripts, web-based tools, and information products (collectively “data”) adhere to the following policy statements.

Filter Total Items: 152
3D Lidar Point Cloud Image of San Francisco Bay and Golden Gate Bridge
April 19, 2016

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 Fall.

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

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.

Fish on seafloor, Offshore Northern California
April 18, 2016

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.

Orthoimagery of Augusta Ga
April 12, 2016

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.

Small Scale Collection USA
April 12, 2016

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.

Tephra and gas eruption from Mount St. Helens crater with dome
March 17, 2016

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.

Satellite image of eruption cloud from Pavlof Volcano in November 2014
March 10, 2016

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.

Ash fall accumulation from Redoubt Volcano in Nikiski after March 28, 2009 eruption plume
March 10, 2016

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.

Ash-rich plume rises out of Halemaʻumaʻu Crater, Kilauea Volcano Hawaiʻi
March 4, 2016

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.

Map of Alaska with many dots offshore of the southern coast to show where  seafloor data is available.
January 1, 2016

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

Painting - Denali in Midsummer
January 1, 2016

A rich legacy of geochemical data produced since the early 1960s covers the great expanse of Alaska; careful treatment of such data may provide significant and revealing geochemical maps that may be used for landscape geochemistry, mineral resource exploration, and geoenvironmental investigations over large areas. To maximize the spatial density and extent of data coverage for statewide map

placeholder for data files
June 5, 2013

ARC/INFO coverage and shapefile of polar bear maternal den habitat in the National Petroleum Reserve - Alaska, updated 5 June 2013

Filter Total Items: 1,072
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. 
 

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

Eagle River landslides, Eagle River, AK
December 1, 2018

Eagle River landslides, Eagle River, AK

Superficial slides along Eagle River east of Eagle River Loop Road. 

2018 Anchorage Earthquake

Eklutna Dam after 2018 Anchorage earthquake
December 1, 2018

Eklutna Dam after 2018 Anchorage earthquake

Eklutna Lake dam appeared to be undamaged the day after the earthquake; overflights of the lake showed no landslides impacted the lake shoreline.

2018 Potter Hill landslide 1, Anchorage, AK
December 1, 2018

2018 Potter Hill landslide 1, Anchorage, AK

Slumping along the Alaska Railroad right-of-way evolved into long-runout landslides. The same area failed in earthquakes in 1954 and 1964.

2018 Anchorage Earthquake

November 30, 2018

Shaking of BP Exploration Building, M7 Nov. 30, 2018, Anchorage Quake

This video presents a visualization of how the BP Exploration Building in Anchorage, Alaska, shook during the moment magnitude (Mw) 7.0 November 30, 2018, Anchorage, Alaska, earthquake. The building was instrumented by U.S. Geological Survey (USGS) to obtain data to study its behavior and performance during strong shaking. Such data are useful in making decisions about

November 30, 2018

Shaking of Atwood Building, Mw 7.0 November 30, 2018, Anchorage quake

This video presents a visualization of how the Atwood Building in Anchorage, Alaska, shook during the Mw 7.0 November 30, 2018, Anchorage, Alaska, earthquake. The building was instrumented by the U.S. Geological Survey to obtain data to study its behavior and performance during strong shaking. Such data are useful in making decisions about improving the performance of the

November 30, 2018

Shaking of Frontier Building, M7.0 November 30, 2018, Anchorage Quake

This video presents a visualization of how the Frontier Building in Anchorage, Alaska, shook during the moment magnitude (Mw) 7.0 November 30, 2018, Anchorage, Alaska, earthquake. The building was instrumented by U.S. Geological Survey to obtain data to study its behavior and performance during strong shaking. Such data are useful in making decisions about improving the

Filter Total Items: 260
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

USGS
July 1, 2013

Wilderness pilots, hikers, boaters and people in Alaskan communities can now report online to authorities if they witness falling ash or an ash cloud from an erupting volcano. The  Alaska Volcano Observatory has developed a new online tool for reporting visible volcanic ash. 

USGS
May 30, 2013

Multiple sources of Alaskan geochemical information have united into one online resource. 

USGS
May 27, 2013

USGS releases more than 400 updated US Topo maps of Alaska

USGS
April 1, 2013

Twenty-five years of monitoring and studying Alaska's volcanoes by the Alaska Volcano Observatory have improved global understanding of how volcanoes work and how to live safely with volcanic eruptions. Timely warnings from AVO throughout its 25-year history have helped reduce the impact of erupting volcanoes, protecting lives, property, and economic well-being.

USGS
January 30, 2013

The upper Cook Inlet is the world's coldest site that regularly supports wintering shorebirds.  The rock sandpiper is the only shorebird found in this region during winter and is a species that is uniquely adapted to survive the winter chill, according to new research by biologists with the USGS Alaska Science Center.