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

USGS research activities relevant to Alaska have yielded more than 9400 historical publications. This page features some of the most recent newsworthy research findings.

Search USGS publications for Alaska

Arctic Science for Decision Maker

2019 USGS Alaska Annual Science Report
Filter Total Items: 2,578
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Year Published: 2012

A multi-sensor lidar, multi-spectral and multi-angular approach for mapping canopy height in boreal forest regions

Spatially explicit representations of vegetation canopy height over large regions are necessary for a wide variety of inventory, monitoring, and modeling activities. Although airborne lidar data has been successfully used to develop vegetation canopy height maps in many regions, for vast, sparsely populated regions such as the boreal forest biome...

Selkowitz, David J.; Green, Gordon; Peterson, Birgit E.; Wylie, Bruce
A multi-sensor lidar, multi-spectral and multi-angular approach for mapping canopy height in boreal forest regions; 2012; Article; Journal; Remote Sensing of Environment; Selkowitz, David J.; Green, Gordon ; Peterson, Birgit ; Wylie, Bruce

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Year Published: 2012

Analysis of low-frequency seismic signals generated during a multiple-iceberg calving event at Jakobshavn Isbræ, Greenland

We investigated seismic signals generated during a large-scale, multiple iceberg calving event that occurred at Jakobshavn Isbræ, Greenland, on 21 August 2009. The event was recorded by a high-rate time-lapse camera and five broadband seismic stations located within a few hundred kilometers of the terminus. During the event two full-glacier-...

Walter, Fabian; Amundson, Jason M.; O'Neel, Shad; Truffer, Martin; Fahnestock, Mark; Fricker, Helen A.
Analysis of low-frequency seismic signals generated during a multiple-iceberg calving event at Jakobshavn Isbræ, Greenland; 2012; Article; Journal; Journal of Geophysical Research; Walter, Fabian ; Amundson, Jason M.; O'Neel, Shad ; Truffer, Martin ; Fahnestock, Mark ; Fricker, Helen A.

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Year Published: 2012

Behavioral vs. molecular sources of conflict between nuclear and mitochondrial DNA: The role of male-biased dispersal in a Holarctic sea duck

Genetic studies of waterfowl (Anatidae) have observed the full spectrum of mitochondrial (mt) DNA population divergence, from apparent panmixia to deep, reciprocally monophyletic lineages. Yet, these studies often found weak or no nuclear (nu) DNA structure, which was often attributed to male-biased gene flow, a common behaviour within this family...

Peters, Jeffrey L.; Bolender, Kimberly A.; Pearce, John M.
Behavioral vs. molecular sources of conflict between nuclear and mitochondrial DNA: The role of male-biased dispersal in a Holarctic sea duck; 2012; Article; Journal; Molecular Ecology; Peters, Jeffrey L.; Bolender, Kimberly A.; Pearce, John M.

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Year Published: 2012

Bioenergetics model for estimating food requirements of female Pacific walruses (Odobenus rosmarus divergens)

Pacific walruses Odobenus rosmarus divergens use sea ice as a platform for resting, nursing, and accessing extensive benthic foraging grounds. The extent of summer sea ice in the Chukchi Sea has decreased substantially in recent decades, causing walruses to alter habitat use and activity patterns which could affect their energy requirements. We...

Noren, S.R.; Udevitz, Mark S.; Jay, C.V.
Bioenergetics model for estimating food requirements of female Pacific walruses (Odobenus rosmarus divergens); 2012; Article; Journal; Marine Ecology Progress Series; Noren, S. R.; Udevitz, M. S.; Jay, C. V.

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Year Published: 2012

Cenozoic tectono-thermal history of the Tordrillo Mountains, Alaska: Paleocene-Eocene ridge subduction, decreasing relief, and late Neogene faulting

Topographic development inboard of the continental margin is a predicted response to ridge subduction. New thermochronology results from the western Alaska Range document ridge subduction related orogenesis. K-feldspar thermochronology (KFAT) of bedrock samples from the Tordrillo Mountains in the western Alaska Range complement existing U-Pb, 40Ar...

Benowitz, Jeff A.; Haeussler, Peter J.; Layer, Paul W.; O'Sullivan, Paul B.; Wallace, Wes K.; Gillis, Robert J.
Cenozoic tectono-thermal history of the Tordrillo Mountains, Alaska: Paleocene-Eocene ridge subduction, decreasing relief, and late Neogene faulting; 2012; Article; Journal; Geochemistry, Geophysics, Geosystems; Benowitz, Jeff A.; Haeussler, Peter J.; Layer, Paul W.; O'Sullivan, Paul B.; Wallace, Wes K.; Gillis, Robert J.

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Year Published: 2012

Effects of sea ice on winter site fidelity of Pacific common eiders (Somateria mollissima v-nigrum)

In northern marine habitats, the presence or absence of sea ice results in variability in the distribution of many species and the quality and availability of pelagic winter habitat. To understand the effects of ice on intra- and inter-annual winter site fidelity and movements in a northern sea-duck species, we marked 25 adult Pacific Common...

Petersen, Margaret R.; Douglas, David C.; Wilson, Heather M.; McCloskey, Sarah E.
Effects of sea ice on winter site fidelity of Pacific common eiders (Somateria mollissima v-nigrum); 2012; Article; Journal; The Auk; Petersen, Margaret R.; Douglas, David C.; Wilson, Heather M.; McCloskey, Sarah E.

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Year Published: 2012

Evidence of accelerated beak growth associated with avian keratin disorder in black-capped chickadees (Poecile atricapillus)

We recently documented an epizootic of beak deformities in more than 2,000 Black-capped Chickadees (Poecile atricapillus) and other wild bird species in North America. This emerging avian disease, which has been termed avian keratin disorder, results in gross overgrowth of the rhamphotheca, the outer, keratinized layer of the beak. To test the...

Van Hemert, Caroline R.; Handel, Colleen M.; O'Hara, Todd M.
Evidence of accelerated beak growth associated with avian keratin disorder in Black-capped Chickadees (Poecile atricapillus); 2012; Article; Journal; Journal of Wildlife Diseases; Van Hemert, Caroline ; Handel, Colleen M.; O'Hara, Todd M.

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Year Published: 2012

Carry-over effects of winter location contribute to variation in timing of nest initiation and clutch size in black brant (Branta bernicla nigricans)

We assessed carry-over effects from winter location on timing of nest initiation and clutch size of Black Brant (Branta bernicla nigricans) using observations of individually marked brant breeding at the Tutakoke River colony in Alaska, and wintering along a latitudinal gradient at three areas on the Pacific coast of Baja California: northernmost...

Schamber, Jason L.; Sedinger, James S.; Ward, David H.
Carry-over effects of winter location contribute to variation in timing of nest initiation and clutch size in black brant (Branta bernicla nigricans); 2012; Article; Journal; Auk; Schamber, Jason L.; Sedinger, James S.; Ward, David H.

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Year Published: 2012

Peat accumulation in drained thermokarst lake basins in continuous, ice-rich permafrost, northern Seward Peninsula, Alaska

Thermokarst lakes and peat-accumulating drained lake basins cover a substantial portion of Arctic lowland landscapes, yet the role of thermokarst lake drainage and ensuing peat formation in landscape-scale carbon (C) budgets remains understudied. Here we use measurements of terrestrial peat thickness, bulk density, organic matter content, and...

Jones, Miriam C.; Grosse, Guido; Jones, Benjamin M.; Anthony, Katey Walter
Peat accumulation in drained thermokarst lake basins in continuous, ice-rich permafrost, northern Seward Peninsula, Alaska; 2012; Article; Journal; Journal of Geophysical Research G: Biogeosciences; Jones, Miriam C.; Grosse, Guido; Jones, Benjamin M.; Anthony, Katey Walter

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Year Published: 2012

Polar and brown bear genomes reveal ancient admixture and demographic footprints of past climate change

Polar bears (PBs) are superbly adapted to the extreme Arctic environment and have become emblematic of the threat to biodiversity from global climate change. Their divergence from the lower-latitude brown bear provides a textbook example of rapid evolution of distinct phenotypes. However, limited mitochondrial and nuclear DNA evidence conflicts in...

Miller, Webb; Schuster, Stephan C.; Welch, Andreanna J.; Ratan, Aakrosh; Bedoya-Reina, Oscar C.; Zhao, Fangqing; Kim, Hie Lim; Burhans, Richard C.; Drautz, Daniela I.; Wittekindt, Nicola E.; Tomsho, Lynn P.; Ibarra-Laclette, Enrique; Herrera-Estrella, Luis; Peacock, Elizabeth L.; Farley, Sean; Sage, George K.; Rode, Karyn D.; Obbard, Martyn E.; Montiel, Rafael; Bachmann, Lutz; Ingólfsson, Ólafur; Aars, Jon; Mailund, Thomas; Wiig, Øystein; Talbot, Sandra L.; Lindqvist, Charlotte
Polar and brown bear genomes reveal ancient admixture and demographic footprints of past climate change; 2012; Article; Journal; Proceedings of the National Academy of Sciences; Miller, Webb; Schuster, Stephan C.; Welch, Andreanna J.; Ratan, Aakrosh; Bedoya-Reina, Oscar C.; Zhao, Fangqing; Kim, Hie Lim; Burhans, Richard C.; Drautz, Daniela I.; Wittekindt, Nicola E.; Tomsho, Lynn P.; Ibarra-Laclette, Enrique; Herrera-Estrella, Luis; Peacock, Elizabeth; Farley, Sean; Sage, George K.; Rode, Karyn; Obbard, Martyn; Montiel, Rafael; Bachmann, Lutz; Ingólfsson, Ólafur; Aars, Jon; Mailund, Thomas; Wiig, Øystein; Talbot, Sandra L.; Lindqvist, Charlotte

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Year Published: 2012

Predicted eelgrass response to sea level rise and its availability to foraging Black Brant in Pacific coast estuaries

Managers need to predict how animals will respond to habitat redistributions caused by climate change. Our objective was to model the effects of sea level rise on total eelgrass (Zostera marina) habitat area and on the amount of that area that is accessible to Brant geese (Branta bernicla), specialist grazers of eelgrass. Digital elevation models...

Shaughnessy, Frank J.; Gilkerson, Whelan; Black, Jeffrey M.; Ward, David H.; Petrie, Mark
Predicted eelgrass response to sea level rise and its availability to foraging Black Brant in Pacific coast estuaries; 2012; Article; Journal; Ecological Applications; Shaughnessy, Frank J.; Gilkerson, Whelan; Black, Jeffrey M.; Ward, David H.; Petrie, Mark

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Year Published: 2012

Evaluation of streambed scour at bridges over tidal waterways in Alaska

The potential for streambed scour was evaluated at 41 bridges that cross tidal waterways in Alaska. These bridges are subject to several coastal and riverine processes that have the potential, individually or in combination, to induce streambed scour or to damage the structure or adjacent channel. The proximity of a bridge to the ocean and water-...

Conaway, Jeffrey S.; Schauer, Paul V.
Evaluation of streambed scour at bridges over tidal waterways in Alaska; 2012; SIR; 2012-5245; Conaway, Jeffrey S.; Schauer, Paul V.

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: 983
Clear day view of Redoubt DFR

Redoubt - DFR

Camera is co-located with seismic station DFR, approximately 7.6 miles (12.2 km) NE of Redoubt. Read more details about Redoubt volcano.

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

...
Clear day view of Redoubt Hut

Redoubt - Hut

Camera is located at AVO's Redoubt Hut, approximately 7.5 mi (12 km) from Redoubt's summit crater. This camera provides a view of the north flank of Redoubt. This camera is in a remote location and operates on battery power. We will set this camera to power on as much as batteries allow. Redoubt summit is approximately 10,200 ft above sea level.

When the camera is "

...
Image: Sampling Stream Water in Denali National Park, Alaska

Sampling Stream Water in Denali National Park, Alaska

Ed Pfeifer of the USGS Southwest Geographic Science Team collecting water samples during field work for a study of Dall sheep habitat in Denali National Park, Alaska.

Clear day view of Augustine - Homer volcano

Augustine - Homer

The webcam is located in Homer, AK, approximately 120KM (75MI) north-east of Augustine volcano. Image interval is currently 5 minutes. Read more details about Augustine volcano.
 

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

...
Clear day view of Shishaldin volcano

Shishaldin Volcano

This camera is located on the south flank of Isanotski, and looks west-northwest to Shishaldin. Read more details about Shishaldin Volcano.

Clear day view of Augustine - Mound volcano

Augustine - Island

The Augustine island webcam has been replaced with a new camera, and is now functioning. Read more details about Augustine volcano.
 

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

...
Clear day view of SpurrCKT

SpurrCKT Volcano

Camera is located at station CKT, and looks at Crater Peak and the Spurr summit behind. Read more details about SpurrCKT volcano.

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.