Dynamic multistate site occupancy models to evaluate hypotheses relevant to conservation of Golden Eagles in Denali National Park, Alaska
Julien Martin, Carol L. McIntyre, James E. Hines, James D. Nichols, Joel A. Schmutz, Margaret C. MacCluskie
2009, Biological Conservation (142) 2726-2731
The recent development of multistate site occupancy models offers great opportunities to frame and solve decision problems for conservation that can be viewed in terms of site occupancy. These models have several characteristics (e.g., they account for detectability) that make them particularly well suited for addressing management and conservation problems....
Does influenza A affect body condition of wild mallard ducks, or vice versa?
Paul L. Flint, J. Christian Franson
2009, Proceedings of the Royal Society B: Biological Sciences (276) 2345-2346
Low pathogenic avian influenza (LPAI) viruses are well documented to circulate within wild waterfowl populations (Olsen et. al. 2006). It has been assumed that these infections are benign with no subsequent effects on life-history parameters. The study by Latorre-Margalef et al. (2009; hereafter L.-M. et al.) represents an important step,...
Avian influenza at both ends of a migratory flyway: characterizing viral genomic diversity to optimize surveillance plans for North America
John M. Pearce, Andrew M. Ramey, Paul L. Flint, Anson V. Koehler, Joseph P. Fleskes, J. Christian Franson, Jeffrey S. Hall, Dirk V. Derksen, S. Ip
2009, Evolutionary Applications (2) 457-468
Although continental populations of avian influenza viruses are genetically distinct, transcontinental reassortment in low pathogenic avian influenza (LPAI) viruses has been detected in migratory birds. Thus, genomic analyses of LPAI viruses could serve as an approach to prioritize species and regions targeted by North American surveillance activities for foreign origin...
An improved procedure for detection and enumeration of walrus signatures in airborne thermal imagery
Douglas M. Burn, Mark S. Udevitz, Suzann G. Speckman, R. Bradley Benter
2009, International Journal of Applied Earth Observation and Geoinformation (11) 324-333
In recent years, application of remote sensing to marine mammal surveys has been a promising area of investigation for wildlife managers and researchers. In April 2006, the United States and Russia conducted an aerial survey of Pacific walrus (Odobenus rosmarus divergens) using thermal infrared sensors to detect groups of animals...
Paleomagnetism of Miocene volcanic rocks in the Newberry Mountains, California: Vertical-axis rotation and a polarity transition
John W. Hillhouse, R.E. Wells, B. F. Cox
2009, Book chapter, Overboard in the Mojave, 20 million years of lakes and wetlands
No abstract available....
Geologic and Geochronologic Studies of the Early Proterozoic Kanektok Metamorphic Complex of Southwestern Alaska
Donald L. Turner, Robert B. Forbes, John N. Aleinikoff, Ian McDougall, Carl E. Hedge, Frederic H. Wilson, Paul W. Layer, Chad P. Hults
2009, Open-File Report 2009-1248
The Kanektok complex of southwestern Alaska appears to be a rootless terrane of early Proterozoic sedimentary, volcanic, and intrusive rocks which were metamorphosed to amphibolite and granulite facies and later underwent a pervasive late Mesozoic thermal event accompanied by granitic plutonism and greenschist facies metamorphism of overlying sediments. The terrane...
Appendix B: Description of Map Units for Northeast Asia Summary Geodynamics Map
Leonid M. Parfenov, Gombosuren Badarch, Nikolai A. Berzin, Duk-Hwan Hwang, Alexander I. Khanchuk, Mikhail I. Kuzmin, Warren J. Nokleberg, Alexander A. Obolenskiy, Masatsugu Ogasawara, Andrei V. Prokopiev, Sergey M. Rodionov, Alexander P. Smelov, Hongquan Yan
2009, Professional Paper 1765-B
The major purposes of this chapter are to provide (1) an overview of the regional geology, tectonics, and metallogenesis of Northeast Asia for readers who are unfamiliar with the region, (2) a general scientific introduction to the succeeding chapters of this volume, and (3) an overview of the methodology of...
Late Glacial-Holocene Pollen-Based Vegetation History from Pass Lake, Prince of Wales Island, Southeastern Alaska
Thomas A. Ager, Joseph G. Rosenbaum
2009, Professional Paper 1760-G
A radiocarbon-dated history of vegetation development since late Wisconsin deglaciation has been reconstructed from pollen evidence preserved in a sediment core from Pass Lake on Prince of Wales Island, southeastern Alaska. The shallow lake is in the south-central part of the island and occupies a low pass that was filled...
Geomorphology and river dynamics of the lower Copper River, Alaska
Timothy P. Brabets, Jeffrey S. Conaway
2009, Scientific Investigations Report 2009-5257
Located in south-central Alaska, the Copper River drains an area of more than 24,000 square miles. The average annual flow of the river near its mouth is 63,600 cubic feet per second, but is highly variable between winter and summer. In the winter, flow averages approximately 11,700 cubic feet per...
Permafrost gas hydrates and climate change: Lake-based seep studies on the Alaskan north slope
M.J. Wooller, Carolyn D. Ruppel, John W. Pohlman, M.B. Leigh, M. Heintz, K. Walter Anthony
2009, Fire in the Ice: NETL Methane Hydrate Newsletter (9) 6-9
The potential interactions between climate change and methane hydrate destabilization are among the most societally-relevant aspects of gas hydrates research. Massive dissociation of deep marine methane hydrates following rapid Earth warming is the most plausible explanation for carbon isotopic data that imply widespread release of microbial methane during the Late...
Population dynamics of long-tailed ducks breeding on the Yukon-Kuskokwim Delta, Alaska
Jason L. Schamber, Paul L. Flint, J. Barry Grand, Heather M. Wilson, Julie A. Morse
2009, Arctic (62) 190-200
Population estimates for long-tailed ducks in North America have declined by nearly 50% over the past 30 years. Life history and population dynamics of this species are difficult to ascertain, because the birds nest at low densities across a broad range of habitat types. Between 1991 and 2004, we collected...
Interpreting the tectonic evolution of Pacific Rim margins using plate kinematics and slab window volcanism
Patricia A. McCrory, Douglas S. Wilson
2009, Tectonophysics (464) 1-2
The possibility that slab windows might form in the wake of ridge subduction was first conceptualized in the late 1970s as earth scientists explored the implications of plate tectonic theory in three dimensions. Acceptance of slab-window occurrence, however, has been a long time coming (McCrory and Wilson, this issue). With...
Enumeration of Pacific walrus carcasses on beaches of the Chukchi Sea in Alaska following a mortality event, September 2009
Anthony S. Fischbach, Daniel H. Monson, C.V. Jay
2009, Open-File Report 2009-1291
On September 14, 2009, we encountered substantial numbers of fresh walrus carcasses on the Alaskan shores of the Chukchi Sea near Icy Cape. We enumerated 131 carcasses using geo-referenced strip transect photography and visual counts of solitary carcasses. All appeared to be young animals based on review of aerial photographs...
eMODIS Alaska
Calli B. Jenkerson, Gail L. Schmidt
2009, Conference Paper, Reflection of the past, vision for the future
No abstract available....
Europium-rich dark monazite - a potential new ore mineral for Alaska, USA?
Richard B. Tripp, William Benzel, David T. Adams, Heather A. Lowers, Gregory K. Lee, Elizabeth A. Bailey
2009, EXPLORE: Newsletter for the Association of Applied Geochemists (145) 1-10
Projected changes in atmospheric heating due to changes in fire disturbance and the snow season in the western Arctic, 2003–2100
E.S. Euskirchen, A. David McGuire, T.S. Rupp, F. S. Chapin III, J.E. Walsh
2009, Journal of Geophysical Research: Biogeosciences (114)
In high latitudes, changes in climate impact fire regimes and snow cover duration, altering the surface albedo and the heating of the regional atmosphere. In the western Arctic, under four scenarios of future climate change and future fire regimes (2003–2100), we examined changes in surface albedo and the related changes...
Application of the multi-dimensional surface water modeling system at Bridge 339, Copper River Highway, Alaska
Timothy P. Brabets, Jeffrey S. Conaway
2009, Open-File Report 2009-1237
The Copper River Basin, the sixth largest watershed in Alaska, drains an area of 24,200 square miles. This large, glacier-fed river flows across a wide alluvial fan before it enters the Gulf of Alaska. Bridges along the Copper River Highway, which traverses the alluvial fan, have been impacted by channel...
Geochemical data for samples collected in 2008 near the concealed pebble porphyry Cu-Au-Mo deposit, Southwest Alaska
David L. Fey, Matthew Granitto, Stuart A. Giles, Steven M. Smith, Robert G. Eppinger, Karen D. Kelley
2009, Open-File Report 2009-1239
In the summer of 2007, the U.S. Geological Survey (USGS) began an exploration geochemical research study over the Pebble porphyry copper-gold-molybdenum deposit. This report presents the analytical data collected in 2008. The Pebble deposit is world class in size, and is almost entirely concealed by tundra, glacial deposits, and post-Cretaceous...
Changes in Species, Areal Cover, and Production of Moss across a Fire Chronosequence in Interior Alaska
J.W. Harden, J. Munster, K.L. Manies, M.C. Mack, J. L. Bubier
2009, Open-File Report 2009-1208
In an effort to characterize the species and production rates of various upland mosses and their relationship to both site drainage and time since fire, annual net primary production of six common moss species was measured. Several stands located near Delta Junction, interior Alaska, were located. These stands ranged from...
Aeromagnetic and Aeroradiometric Data for the Conterminous United States and Alaska from the National Uranium Resource Evaluation (NURE) Program of the U.S. Department of Energy
Patricia L. Hill, Robert P. Kucks, Dhananjay Ravat
2009, Open-File Report 2009-1129
The National Uranium Resource Evaluation (NURE) program was initiated in 1973 with a primary goal of identifying uranium resources in the United States. The airborne program's main purpose was to collect radiometric data of the conterminous United States and Alaska. Magnetic data were also collected. After the program ended, most...
The November 15, 2006 Kuril Islands-generated tsunami in Crescent City, California
Lori Dengler, B. Uslu, A. Barberopoulou, S. C. Yim, A. Kelly
2009, Pure and Applied Geophysics (166) 37-53
On November 15, 2006, Crescent City in Del Norte County, California was hit by a tsunami generated by a M w 8.3 earthquake in the central Kuril Islands. Strong currents that persisted over an eight-hour period damaged floating docks and several boats and caused an estimated $9.2 million in losses....
Preliminary geologic map of the Cook Inlet region, Alaska-Including parts of the Talkeetna, Talkeetna Mountains, Tyonek, Anchorage, Lake Clark, Kenai, Seward, Iliamna, Seldovia, Mount Katmai, and Afognak 1:250,000-scale quadrangles
2009, Open-File Report 2009-1108
The growth in the use of Geographic Information Systems (GIS) has highlighted the need for digital geologic maps that have been attributed with information about age and lithology. Such maps can be conveniently used to generate derivative maps for manifold special purposes such as mineral-resource assessment, metallogenic studies, tectonic studies,...
Chronology and references of volcanic eruptions and selected unrest in the United States, 1980-2008
Angela K. Diefenbach, Marianne Guffanti, John W. Ewert
2009, Open-File Report 2009-1118
The United States ranks as one of the top countries in the world in the number of young, active volcanoes within its borders. The United States, including the Commonwealth of the Northern Mariana Islands, is home to approximately 170 geologically active (age <10,000 years) volcanoes. As our review of the...
A case study of carbon fluxes from land change in the Southwest Brazilian Amazon
K. Barrett, J. Rogan, J.R. Eastman
2009, Journal of Land Use Science (4) 233-248
Worldwide, land change is responsible for one-fifth of anthropogenic carbon emissions. In Brazil, three-quarters of carbon emissions originate from land change. This study represents a municipal-scale study of carbon fluxes from vegetation in Rio Branco, Brazil. Land-cover maps of pasture, forest, and secondary growth from 1993, 1996, 1999, and 2003...
Quantifying the undiscovered geothermal resources of the United States
Colin F. Williams, Marshall J. Reed, Jacob DeAngelo, S. Peter Galanis Jr.
2009, Conference Paper, Geothermal Resources Council Transactions
In 2008, the U.S. Geological Survey (USGS) released summary results of an assessment of the electric power production potential from the moderate- and high-temperature geothermal resources of the United States (Williams et al., 2008a; USGS Fact Sheet 2008-3082; http://pubs.usgs.gov/fs/2008/3082). In the assessment, the estimated mean power production potential from undiscovered...
