Unified Interior Regions

Region 11: Alaska

Alaska Science Center

Alaska Science Center

4210 University Drive
Anchorage, AK 99508
Phone: (907) 786-7000

View Center Website

Volcano Science Center

Volcano Science Center

4230 University Drive
Anchorage, AK 99508
Phone: (907) 786-7497

View Center Website

Climate Adaptation Science Center

Climate Adaptation Science Center

4230 University Drive
Anchorage, AK 99508
Phone: 907-301-7830

View Center Website

Regions L2 Landing Page Tabs

Filter Total Items: 2,370
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Year Published: 2010

Reconnaissance study of the Taylor Mountains pluton, southwestern Alaska

The Taylor Mountains pluton is a Late Cretaceous to early Tertiary (median age 65 + or ? 2 Ma) epizonal, composite biotite granite stock located about 235 km (145 mi) northeast of Dillingham in southwestern Alaska. This 30 km2 (12 mi2) pluton has sharp and discordant contacts with hornfels that developed in Upper Cretaceous clastic sedimentary...

Hudson, Travis L.; Miller, Marti L.; Klimasauskas, Edward P.; Layer, Paul W.
Reconnaissance study of the Taylor Mountains pluton, southwestern Alaska; 2010; PP; 1776-A; Hudson, Travis L.; Miller, Marti L.; Klimasauskas, Edward P.; Layer, Paul W.

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Year Published: 2010

Studies by the U.S. Geological Survey in Alaska, 2008-2009

The collection of papers that follow continues the series of U.S. Geological Survey (USGS) investigative reports in Alaska under the broad umbrella of the geologic sciences. This series represents new and sometimes-preliminary findings that are of interest to Earth scientists in academia, government, and industry; to land and resource managers;...

Dumoulin, Julie A.; Galloway, John
Studies by the U.S. Geological Survey in Alaska, 2008-2009; 2010; PP; 1776; Dumoulin, Julie; Galloway, John

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Year Published: 2010

Arctic sea ice decline: Projected changes in timing and extent of sea ice in the Bering and Chukchi Seas

The Arctic region is warming faster than most regions of the world due in part to increasing greenhouse gases and positive feedbacks associated with the loss of snow and ice cover. One consequence has been a rapid decline in Arctic sea ice over the past 3 decades?a decline that is projected to continue by state-of-the-art models. Many stakeholders...

Douglas, David C.
Arctic sea ice decline: Projected changes in timing and extent of sea ice in the Bering and Chukchi Seas; 2010; OFR; 2010-1176; Douglas, D. C.

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Year Published: 2010

Characteristics of fall chum salmon spawning habitat on a mainstem river in Interior Alaska

Chum salmon (Oncorhynchus keta) are the most abundant species of salmon spawning in the Yukon River drainage system, and they support important personal use, subsistence, and commercial fisheries. Chum salmon returning to the Tanana River in Interior Alaska are a significant contribution to the overall abundance of Yukon River chum salmon and an...

Burril, Sean E.; Zimmerman, Christian E.; Finn, James E.
Characteristics of fall chum salmon spawning habitat on a mainstem river in Interior Alaska; 2010; OFR; 2010-1164; Burril, Sean E.; Zimmerman, Christian E.; Finn, James E.

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Year Published: 2010

Modeling the Effects of Mortality on Sea Otter Populations

Conservation and management of sea otters can benefit from managing the magnitude and sex composition of human related mortality, including harvesting within sustainable levels. Using age and sex-specific reproduction and survival rates from field studies, we created matrix population models representing sea otter populations with growth rates of...

Bodkin, James L.; Ballachey, Brenda E.
Modeling the Effects of Mortality on Sea Otter Populations; 2010; SIR; 2010-5096; Bodkin, James L.; Ballachey, Brenda E.

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Year Published: 2010

U.S. Geological Survey (USGS) Western Region Kasatochi Volcano Coastal and Ocean Science

Alaska is noteworthy as a region of frequent seismic and volcanic activity. The region contains 52 historically active volcanoes, 14 of which have had at least one major eruptive event since 1990. Despite the high frequency of volcanic activity in Alaska, comprehensive studies of how ecosystems respond to volcanic eruptions are non-existent. On...

DeGange, Anthony
U.S. Geological Survey (USGS) Western Region Kasatochi Volcano Coastal and Ocean Science; 2010; FS; 2010-3028; DeGange, Anthony

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Year Published: 2010

Abundance, Timing of Migration, and Egg-to-Smolt Survival of Juvenile Chum Salmon, Kwethluk River, Alaska, 2007 and 2008

To better understand and partition mortality among life stages of chum salmon (Oncorhynchus keta), we used inclined-plane traps to monitor the migration of juveniles in the Kwethluk River, Alaska in 2007 and 2008. The migration of juvenile chum salmon peaked in mid-May and catch rates were greatest when water levels were rising. Movement of chum...

Burril, Sean E.; Zimmerman, Christian E.; Finn, James E.; Gillikin, Daniel
Abundance, Timing of Migration, and Egg-to-Smolt Survival of Juvenile Chum Salmon, Kwethluk River, Alaska, 2007 and 2008 ; 2010; OFR; 2010-1028; Burril, Sean E.; Zimmerman, Christian E.; Finn, James E.; U.S. Geological Survey; Gillikin, Daniel, U.S. Fish and Wildlife Service

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Year Published: 2010

Glacier microseismicity

We present a framework for interpreting small glacier seismic events based on data collected near the center of Bering Glacier, Alaska, in spring 2007. We find extremely high microseismicity rates (as many as tens of events per minute) occurring largely within a few kilometers of the receivers. A high-frequency class of seismicity is distinguished...

West, Michael E.; Larsen, Christopher F.; Truffer, Martin; O'Neel, Shad; LeBlanc, Laura
Glacier microseismicity; 2010; Article; Journal; Geology; West, Michael E.; Larsen, Christopher F.; Truffer, Martin; O'Neel, Shad; LeBlanc, Laura

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Year Published: 2010

Vegetation of eastern Unalaska Island, Aleutian Islands, Alaska

Plant communities of Unalaska Island in the eastern Aleutian Islands of western Alaska, and their relationship to environmental variables, were studied using a combined Braun-Blanquet and multivariate approach. Seventy relevés represented the range of structural and compositional variation in the matrix of vegetation and landform zonation. Eleven...

Talbot, Stephen S.; Schofield, Wilfred B.; Talbot, Sandra L.; Daniëls, Fred J.A.
Vegetation of eastern Unalaska Island, Aleutian Islands, Alaska; 2010; Article; Journal; Botany; Talbot, Stephen S.; Schofield, Wilfred B.; Talbot, Sandra L.; Daniëls, Fred J. A.

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Year Published: 2010

Beak deformities in Northwestern Crows: Evidence of a multispecies epizootic

Beak abnormalities are rare among adult birds and, typically, are not widespread in a given population, within a region, or across multiple species. A high concentration of beak deformities was recently documented in Black-capped Chickadees (Poecile atricapillus) and other resident avian species in Alaska. We describe a parallel condition in...

Van Hemert, Caroline R.; Handel, Colleen M.
Beak deformities in Northwestern Crows: evidence of a multispecies epizootic; 2010; Article; Journal; The Auk; Van Hemert, Caroline; Handel, Colleen M.

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Year Published: 2010

Iceberg calving during transition from grounded to floating ice: Columbia Glacier, Alaska

The terminus of Columbia Glacier, Alaska, unexpectedly became ungrounded in 2007 during its prolonged retreat. Visual observations showed that calving changed from a steady release of low-volume bergs, to episodic flow-perpendicular rifting, propagation, and release of very large icebergs - a style reminiscent of calving from ice shelves. Here, we...

Walter, Fabian; O'Neel, Shad; McNamara, Daniel; Pfeffer, W.T.; Bassis, Jeremy N.; Fricker, Helen Amanda
Iceberg calving during transition from grounded to floating ice: Columbia Glacier, Alaska; 2010; Article; Journal; Geophysical Research Letters; Walter, Fabian; O'Neel, Shad; McNamara, Daniel; Pfeffer, W.T.; Bassis, Jeremy N.; Fricker, Helen Amanda

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Year Published: 2010

Population structure and plumage polymorphism: the intraspecific evolutionary relationships of a polymorphic raptor, Buteo jamaicensis harlani

Background Phenotypic and molecular genetic data often provide conflicting patterns of intraspecific relationships confounding phylogenetic inference, particularly among birds where a variety of environmental factors may influence plumage characters. Among diurnal raptors, the taxonomic relationship of Buteo jamaicensis harlani to other...

Hull, Joshua M.; Mindell, David P.; Talbot, Sandra L.; Kay, Emily H.; Hoekstra, Hopi E.; Ernest, Holly B.

Browse a selection of videos, audio clips, images, and more from a wide range of science topics covered by USGS!

"Science for a Changing World" - watch the short film here!

Documentary on walruses here!

Watch the first-ever footage of a polar bear on Arctic sea ice!

Join USGS geologists as they collect lava samples from Kilauea Volcano.

Watch researchers in the Arctic!

Filter Total Items: 989
Clear day view of Augustine volcano - Lagoon

Augustine - Lagoon

The camera is located at the University of Alaska Geophysical Institute Augustine camp on the west side of the island. Images are transmitted to Anchorage via Homer using the Plate Boundary Observatory radio network. Current image interval is 120 minutes. Read more about Augustine volcano.

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View of a beach that's mostly mud with some dried grasses and rocks, shown at low tide with birds and ice in the water.

Unalakleet video camera 2 time exposure

Two video cameras overlook the coast from atop a windmill tower in Unalakleet, Alaska where they look westward over Norton Sound. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes. Today’s most recent time-exposure (timex) image from camera 2 is shown here. Please note that it takes 10 minutes for the images to be posted, once

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Clear night image of Augustine - low light

Augustine - Low Light

This low-light camera is co-located with the daylight camera in Homer. It is extremely sensitive to light and has a range that extends to the Near Infrared (NIR). The image from this camera will often be light-saturated during daylight hours and will display only as a white featureless screen. Read

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This dark image shows changes in pixels in a video image over 10 minutes.

Unalakleet video camera 1 variance image

Two video cameras overlook the coast from atop a windmill tower in Unalakleet, Alaska where they look westward over Norton Sound. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes. Today’s most recent image from camera 1 is shown here. Please note that it takes 10 minutes for the images to be posted, once they are collected by

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Image: Dall Sheep Habitat, Denali National Park, Alaska

Dall Sheep Habitat, Denali National Park, Alaska

Ed Pfeifer of the USGS Southwest Geographic Science Team recording field notes in alpine tundra during a field study of Dall sheep habitat in Denali National Park, Alaska, on July 29, 2009

Attribution: Region 11: Alaska
Clear day view of Cleveland volcano

Cleveland CLCO

This camera is located near Concord Point, Chuginadak Island, and looks west-northwest to Cleveland in the mid-center. On nice days, Carlisle is visible to the far right, beyond Cleveland. The slopes of Tana are in the near-right. To conserve battery power, this camera intermittently captures images.

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This dark image shows changes in pixels in a video image over 10 minutes.

Unalakleet video camera 2 variance image

Two video cameras overlook the coast from atop a windmill tower in Unalakleet, Alaska where they look westward over Norton Sound. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes. Today’s most recent image from camera 2 is shown here. Please note that it takes 10 minutes for the images to be posted, once they are collected by

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Placeholder for adding a file in SCALD
July 30, 2018

NPPSD Literature Methods for Conducting Surveys

NPPSD Literature Methods for Conducting Surveys

This image shows the brightest pixel values captured during 10 minutes of video.

Unalakleet video camera 1 bright image

Two video cameras overlook the coast from atop a windmill tower in Unalakleet, Alaska where they look westward over Norton Sound. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes. Today’s most recent image from camera 1 is shown here. Please note that it takes 10 minutes for the images to be posted, once they are collected by

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Stay up-to-date with what is happening in the Alaska Region by checking out our different social media accounts. You can also contact Alaska Regional Office staff or Center Directors for more information.