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: 2,397
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Year Published: 2017

Geometry, mass balance and thinning at Eklutna Glacier, Alaska: an altitude-mass-balance feedback with implications for water resources

We analyzed glacier surface elevations (1957, 2010 and 2015) and surface mass-balance measurements (2008–2015) on the 30 km2 Eklutna Glacier, in the Chugach Mountains of southcentral Alaska. The geodetic mass balances from 1957 to 2010 and 2010 to 2015 are −0.52 ± 0.46 and −0.74 ± 0.10 m w.e. a−1, respectively. The glaciological mass balance...

Sass, Louis C.; Loso, Michael G.; Geck, Jason; Thoms, Evan; Mcgrath, Daniel
SASS, L., LOSO, M., GECK, J., THOMS, E., & MCGRATH, D. (2017). Geometry, mass balance and thinning at Eklutna Glacier, Alaska: An altitude-mass-balance feedback with implications for water resources. Journal of Glaciology, 63(238), 343-354.

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Year Published: 2017

Reassortment of influenza A viruses in wild birds in Alaska before H5 Clade 2.3.4.4 Outbreaks

Sampling of mallards in Alaska during September 2014–April 2015 identified low pathogenic avian influenza A virus (subtypes H5N2 and H1N1) that shared ancestry with highly pathogenic reassortant H5N2 and H5N1 viruses. Molecular dating indicated reassortment soon after interhemispheric movement of H5N8 clade 2.3.4.4, suggesting genetic exchange in...

Hill, Nichola J.; Hussein, Islam T. M.; Davis, Kimberly R.; Ma, Eric J.; Spivey, Timothy J.; Ramey, Andrew M.; Puryear, Wendy Blay; Das, Suman R.; Halpin, Rebecca A.; Lin, Xudong; Federova, Nadia B.; Suarez, David L.; Boyce, Walter M.; Runstadler, Jonathan A.
Hill, N.J., Hussein, I.T.M., Davis, K.R., Ma, E.J., Spivey, T.J., Ramey, A.M., Puryear, W.B., Das, S.R., Halpin, R.A., Lin, X., Fedorova, N.B., Suarez, D.L., Boyce, W.M., and J.A. Runstadler, 2017, Reassortment of Influenza A Viruses in Wild Birds in Alaska before H5 Clade 2.3.4.4 Outbreaks: Emerging Infectious Diseases, vol. 23, no. 4, p. 654-657. doi: 10.3201/eid2304.161668

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Year Published: 2017

A global threats overview for Numeniini populations: synthesising expert knowledge for a group of declining migratory birds.

The Numeniini is a tribe of 13 wader species (Scolopacidae, Charadriiformes) of which seven are Near Threatened or globally threatened, including two Critically Endangered. To help inform conservation management and policy responses, we present the results of an expert assessment of the threats that members of this taxonomic group face across...

Pearce-Higgins, James W. ; Brown, Daniel J.; Douglas, David J.T. ; Alves, José A.; Bellio, Mariagrazia; Bocher, Pierrick; Buchannan, Graeme M. ; Clay, Robert P.; Conklin, Jesse R.; Crockford, Nicola ; Dann, Peter; Elts, Jaanus; Friis, Christian ; Fuller, Richard A. ; Gill, Jennifer A.; Gosbell, Ken; Johnson, James A.; Marquez-Ferrando, Rocio; Masero, José A.; Melville, David S.; Millington, Spike; Minton, Clive; Mundkur, Taej; Nol, Erika; Pehlak, Hannes; Piersma, Theunis; Rogers, Danny I.; Ruthrauff, Daniel R.; Senner, Nathan R.; Nazeer Shah, Junid; Sheldon, Rob D. ; Soloviev, Sergej A.; Tomkovich, Pavel S.; Verkuil, Yvonne I.
Pearce-Higgins, J. W., D. J. Brown, D. J. T. Douglas, J. A. Alves, M. Bellio, P. Bocher, G. M. Buchanan, R. P. Clay, J. R. Conklin, N. Crockford, P. Dann, J. Elts, C. Friis, R. A. Fuller, J. A. Gill, K. Gosbell, J. A. Johnson, R. Marquez-Ferrando, J. A. Masero, D. S. Melville, S. Millington, C. Minton, T. Mundkur, E. Nol, H. Pehlak, T. Piersma, F. Robin, D. I. Rogers, D. R. Ruthrauff, N. R. Senner, J. N. Shah, R. D. Sheldon, S. A. Soloviev, P. S. Tomkovich, and Y. I. Verkuil. 2017. A global threats overview for Numeniini populations: synthesising expert knowledge for a group of declining migratory birds. Bird Conservation International 27:6-34. doi:10.1017/S0959270916000678

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Year Published: 2017

Evaluation of a method using survey counts and tag data to estimate the number of Pacific walruses (Odobenus rosmarus divergens) using a coastal haulout in northwestern Alaska

Increased periods of sparse sea ice over the continental shelf of the Chukchi Sea in late summer have reduced offshore haulout habitat for Pacific walruses (Odobenus rosmarus divergens) and increased opportunities for human activities in the region. Knowing how many walruses could be affected by human activities would be useful to conservation...

Battaile, Brian; Jay, Chadwick V.; Udevitz, Mark S.; Fischbach, Anthony S.
Battaile, B. C., C. V. Jay, M. S. Udevitz, and A. S. Fischbach. 2017. Evaluation of a method using survey counts and tag data to estimate the number of Pacific walruses (Odobenus rosmarus divergens) using a coastal haulout in northwestern Alaska. Polar Biology, DOI 10.1007/s00300-016-2060-5.

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Year Published: 2017

Harvest dynamics and annual survival of mallards and grey ducks

We examined how hunter behavior, environmental covariates, and mallard (Anas platyrhynchos) and grey duck (A. superciliosa) population indices affected per capita harvest, hunter effort (i.e., hours hunted), and hunter participation (i.e., license sales) between 1997 and 2012 in the Eastern Fish and Game Region of New Zealand. Additionally, we...

McDougall, Matthew B.; Amundson, Courtney L.

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Year Published: 2017

Bedrock geologic map of the northern Alaska Peninsula area, southwestern Alaska

The northern Alaska Peninsula is a region of transition from the classic magmatic arc geology of the Alaska Peninsula to a Proterozoic and early Paleozoic carbonate platform and then to the poorly understood, tectonically complex sedimentary basins of southwestern Alaska. Physiographically, the region ranges from the high glaciated mountains...

Wilson, Frederic H.; Blodgett, Robert B.; Blome, Charles D.; Mohadjer, Solmaz; Preller, Cindi C.; Klimasauskas, Edward P.; Gamble, Bruce M.; Coonrad, Warren L.
Wilson, F.H., Blodgett, R.B., Blome, C.D., Mohadjer, S., Preller, C.C., Klimasauskas, E.P., Gamble, B.M., and Coonrad, W.L., 2017, Bedrock geologic map of the northern Alaska Peninsula area, southwestern Alaska: U.S. Geological Survey Scientific Investigations Map 2942, pamphlet 43 p., scale 1:350,000, https://doi.org/10.3133/sim2942.

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Year Published: 2017

Geospatial analysis identifies critical mineral-resource potential in Alaska

Alaska consists of more than 663,000 square miles (1,717,000 square kilometers) of land—more than a sixth of the total area of the United States—and large tracts of it have not been systematically studied or sampled for mineral-resource potential. Many regions of the State are known to have significant mineral-...

Jacques, Katherine; Landowski, Claire; Karl, Susan M.; Labay, Keith A.
Karl, S.M., and Labay, K.A., Geospatial analysis identifies critical mineral-resource potential in Alaska: U.S. Geological Survey Fact Sheet 2017–3012, 4 p., https://doi.org/10.3133/fs20173012.

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Year Published: 2017

Regional patterns of Mesozoic-Cenozoic magmatism in western Alaska revealed by new U-Pb and 40Ar/39Ar ages

In support of regional geologic framework studies, we obtained 50 new argon-40/argon-39 (40Ar/39Ar) ages and 33 new uranium-lead (U-Pb) ages from igneous rocks of southwestern Alaska. Most of the samples are from the Sleetmute and Taylor Mountains quadrangles; smaller collections or individual samples are from the Bethel, Candle, Dillingham,...

Dumoulin, Julie A.; Bradley, Dwight C.; Miller, Marti L.; Friedman, Richard M.; Layer, Paul W.; Bleick, Heather A.; Jones, James V.; Box, Steven E.; Karl, Susan M.; Shew, Nora B.; White, Timothy S.; Till, Alison B.; Dumoulin, Julie A.; Bundtzen, Thomas K.; O'Sullivan, Paul B.; Ullrich, Thomas D.
Bradley, D.C., Miller, M.L., Friedman, R.M., Layer, P.W., Bleick, H.A., Jones, J.V., III, Box, S.E., Karl, S.M., Shew, N.B., White, T.S., Till, A.B., Dumoulin, J.A., Bundtzen, T.K., O’Sullivan, P.B., and Ullrich, T.D., 2017, Regional patterns of Mesozoic-Cenozoic magmatism in western Alaska revealed by new U-Pb and 40Ar/39Ar ages, in Dumoulin, J.A., ed., Studies by the U.S. Geological Survey in Alaska, vol. 15: U.S. Geological Survey Professional Paper 1814–D, 48 p., https://doi.org/10.3133/pp1814D.

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Year Published: 2017

Walrus haul-out and in water activity levels relative to sea ice availability in the Chukchi Sea

An animal’s energetic costs are dependent on the amount of time it allocates to various behavioral activities. For Arctic pinnipeds, the time allocated to active and resting behaviors could change with future reductions in sea ice cover and longer periods of open water. The Pacific walrus (Odobenus rosmarus divergens) is a large Arctic pinniped...

Jay, Chadwick V.; Taylor, Rebecca L.; Fischbach, Anthony S.; Udevitz, Mark S.; Beatty, William

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Year Published: 2017

Advancing the match-mismatch framework for large herbivores in the Arctic: Evaluating the evidence for a trophic mismatch in caribou

Climate-induced shifts in plant phenology may adversely affect animals that cannot or do not shift the timing of their reproductive cycle. The realized effect of potential trophic “mismatches” between a consumer and its food varies with the degree to which species rely on dietary income and stored capital. Large Arctic herbivores rely heavily on...

Gustine, David D.; Barboza, Perry; Adams, Layne G.; Griffith, Brad; Cameron, Raymond D.; Whitten, Kenneth R.
Gustine, D., Barboza, P., Adams, L., Griffith, B., Cameron, R., and Whitten, K. 2017 Advancing the match-mismatch framework for large herbivores in the Arctic: Evaluating the evidence for a trophic mismatch in caribou, PLoS ONE: vol. 12 no. 2 p. e0171807. doi: 10.1371/journal.pone.0171807

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Year Published: 2017

Assessment of contemporary genetic diversity and inter-taxa/inter-region exchange of avian paramyxovirus serotype 1 in wild birds sampled in North America

BackgroundAvian paramyxovirus serotype 1 (APMV-1) viruses are globally distributed, infect wild, peridomestic, and domestic birds, and sometimes lead to outbreaks of disease. Thus, the maintenance, evolution, and spread of APMV-1 viruses are relevant to avian health.MethodsIn this study we sequenced the fusion gene from 58 APMV-1 isolates...

Ramey, Andrew M.; Goraichuk, Iryna V.; Hicks, Joseph T.; Dimitrov, Kiril M.; Poulson, Rebecca L.; Stallknecht, David E.; Bahl, Justin; Afonso, Claudio L.
Ramey, A.M., Goraichuk, I.V., Hicks, J.T., Dimitrov, K.M., Paulson, R.L., Stalknecht, D.E., Bahl, J., and Afonso, C.L., 2017, Assessment of contemporary genetic diversity and inter-taxa/inter-region exchange of avian paramyxovirus serotype 1 in wild birds sampled in North America: Virology Journal, v. 14, p. 43. doi: 10.1186/s12985-017-0714-8

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Year Published: 2017

Hypsometric control on glacier mass balance sensitivity in Alaska and northwest Canada

Glacier hypsometry provides a first‐order approach for assessing a glacier's response to climate forcings. We couple the Randolph Glacier Inventory to a suite of in situ observations and climate model output to examine potential change for the ∼27,000 glaciers in Alaska and northwest Canada through the end of the 21st century. By 2100, based on...

Mcgrath, Daniel; Sass, Louis C.; O'Neel, Shad; Arendt, Anthony A.; Kienholz, C.

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: 986
Computer application screen showing seafloor features, depth on left, a volcano-like cone sticking up in middle with plume.
December 31, 2015

Sidescan sonar record off so. Alaska

Profile of newly discovered volcano-like cone in sonar record collected off southern Alaska. The cone’s summit is at about 1,000 meters water depth. Note fluid plume (blue) rising more than 700 meters upward from the summit.

USGS scientist Layne Adams places a radiocollar on a sedated large bull caribou in Denali National Park, Alaska
December 31, 2015

USGS scientist places radiocollar on a sedated bull caribou in Alaska

USGS scientist Layne Adams places a radiocollar on a sedated large bull caribou in Denali National Park, Alaska. 

USGS scientist leaning against a rock outcropping with trees in the background
December 31, 2015

Shearing of the Melozitna Granite

Geologist and cataclastic shear zones in the Melozitna granite in the Ruby batholith. This granite contains abundant monazite and high levels of thorium and rare earth elements. The shear zones accelerate erosion of the granite into streams, where the monazite that contains the rare earth elements can be concentrated. This area is part of the Bureau of Land Management's

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Image shows a woman sitting on a rock in a stream
December 31, 2015

Panning for Rare Earths

A contracted field assistant pans for monazite and rare earth minerals in Wolf Creek, which cuts through the Melozitna granite. This area is part of the Bureau of Land Management's Central Yukon Planning Area, which USGS did a mineral assessment of in 2015.

Collecting permafrost information on the Tahana River
December 31, 2015

Collecting permafrost information on the Tahana River

David Pelunis-Messier and Milton Roberts navigating on the Tanana River, a main tributary of the Yukon River. The two are taking part in the Yukon River permafrost study. 

Researcher takes winter water chemistry samples on the Yukon River
December 31, 2015

Researcher takes winter water chemistry samples on the Yukon River

Researcher Carol Hasburgh taking winter water chemistry samples on the Yukon River for a permafrost loss study. 

Clams half buried in very fine, gray sediment.
December 31, 2015

Calyptogena spp. in Alaska

These clams (Calyptogena spp.) were discovered in about 1000 meter-deep waters off the southern tip of Alaska near a 250-meter-high cone rising from the seafloor and 10 kilometers from the Queen Charlotte-Fairweather fault. Evidence of fluid venting from the cone includes these clams, which live on nutrients produced by chemosynthetic bacteria that use components

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Computer-generated illustration of colored, high-resolution seafloor map clearly shows a fault and where the seafloor is offset.
December 31, 2015

Seafloor trace of the Queen Charlotte-Fairweather fault

Seafloor trace of the Queen Charlotte-Fairweather fault (from top left to bottom right) offsets the edge of the Yakobi Sea Valley off southeast Alaska. This 700-mile-long fault has generated large earthquakes in the past. Future shocks—and tsunamis—could threaten coastal communities in the U.S. and Canada. (Color-coded depths, in meters, were mapped in 2015.)

Map illustration showing fault lines and direction of tectonic plate movement along a stretch of the Alaskan coastline.
December 31, 2015

Study region along the Queen Charlotte-Fairweather fault

Study region along the Queen Charlotte-Fairweather fault offshore southeastern Alaska. Rectangles show locations of the two USGS-led marine geophysical surveys in May and August 2015. The third cruise was offshore Haida Gwaii, British Columbia, and southern Alaska in September 2015 (

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USGS researcher gets ready to take water samples in the Yukon River Basin
December 31, 2015

USGS researcher gets ready to take water samples in the Yukon River Ba

Charles Couvillion (USGS Alaska Science Center) at Pilot Station, AK, getting ready to take water samples and discharge measurements for a permafrost study in the Yukon River Basin.   

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