Aeromagnetic survey of Dillingham area in southwest Alaska, a website for the preliminary distribution of data
Water Resources Division, U.S. Geological Survey
2006, Open-File Report 2006-1136
An airborne high-resolution magnetic survey was completed over the Dillingham and Nushagak Bay and Naknek area in southwestern Alaska. The flying was undertaken by McPhar Geosurveys Ltd. on behalf of the United States Geological Survey (USGS). First tests and calibration flights were completed by August 26th, 2005 and data acquisition...
USGS, NPS, educate the public on the risks, wonders of Alaska's volcanoes
Jennifer N. Adleman
2006, People, Land, and Water
No abstract available....
Conodont and Radiolarian Data from the De Long Mountains Quadrangle and Adjacent Areas, Northern Alaska
Julie A. Dumoulin, Anita G. Harris, Charles D. Blome, Lorne E. Young
2006, Open-File Report 2006-1068
INTRODUCTION This report presents biostratigraphic data from 289 collections at 189 localities in the De Long Mountains, Misheguk Mountain, and Noatak quadrangles (fig. 1); most of these data have never been previously published. The collections were made during studies of the Red Dog massive sulfide deposit in 1998?2004 and in...
Constraints on the age and provenance of the Chugach accretionary complex from detrital zircons in the Sitka Graywacke near Sitka, Alaska
Peter J. Haeussler, George E. Gehrels, Susan M. Karl
2006, Professional Paper 1709-F
The Sitka Graywacke is the westernmost and youngest unit of the Chugach accretionary complex in southeastern Alaska. Using laser-ablation inductively coupled plasma mass spectroscopy, we obtained 492 detrital-zircon ages on seven typical samples of Sitka Graywacke turbidites, which were collected in a transect across much of the unit near Sitka,...
Infrasonic array observations at I53US of the 2006 Augustine Volcano eruptions
C.R. Wilson, J.V. Olson, Curt A.L. Szuberla, Steve McNutt, Guy Tytgat, Douglas P. Drob
2006, InfraMatics (13) 11-25
The recent January 2006 Augustine eruptions, from the 11th to the 28th, have produced a series of 12 infrasonic signals that were observed at the I53US array at UAF. the eruption times for the signals were provided by the...
Micropaleontology of selected wells and seismic shot holes, northern Alaska
Michael B. Mickey, Hideyo Haga, Kenneth J. Bird
2006, Open-File Report 2006-1055
This report provides micropaleontologic data (foraminifera, pollen, spores, and microplankton) and interpretations of the rocks penetrated by 49 wells and 3,134 seismic shot holes distributed among 73 seismic lines (figs. 1, 2; table 1). All shot holes and 30 wells are located within the National Petroleum Reserve in Alaska (NPRA); the...
Calculation of scour depth at the Parks Highway Bridge on the Tanana River at Nenana, Alaska, using one- and two-dimensional hydraulic models
Dustin E. Langley
2006, Scientific Investigations Report 2006-5023
No abstract available....
Geologic characteristics of benthic habitats in Glacier Bay, southeast Alaska
Jodi N. Harney, Guy R. Cochrane, Lisa L. Etherington, Pete Dartnell, Nadine E. Golden, Hank Chezar
2006, Open-File Report 2006-1081
In April 2004, more than 40 hours of georeferenced submarine digital video was collected in water depths of 15-370 m in Glacier Bay to (1) ground-truth existing geophysical data (bathymetry and acoustic reflectance), (2) examine and record geologic characteristics of the sea floor, and (3) investigate the relation between substrate...
Analyses of unusual long-period earthquakes with extended coda recorded at Katmai National Park, Alaska, USA
Silvio De Angelis
2006, Geophysical Research Letters (33)
A swarm of six long-period (LP) events with slowly decaying coda wave amplitudes and durations up to 120 s, was recorded by seismic stations located in the proximity of Mt. Griggs, a fumarolically active volcano in the Katmai National Park, Alaska, during December 8–21, 2004. Spectral analyses reveal the quasi-monochromatic...
Major- and trace-element concentrations in rock samples collected in 2004 from the Taylor Mountains 1:250,000-scale quadrangle, Alaska
Edward P. Klimasauskas, Marti L. Miller, Dwight Bradley, Susan M. Karl, James F. Baichtal, Robert B. Blodgett
2006, Open-File Report 2006-1070
The Kuskokwim mineral belt of Bundtzen and Miller (1997) forms an important metallogenic region in southwestern Alaska that has yielded more than 3.22 million ounces of gold and 400,000 ounces of silver. Precious-metal and related deposits in this region associated with Late Cretaceous to early Tertiary igneous complexes extend into...
Calibration of PS09, PS10, and PS11 trans-Alaska pipeline system strong-motion instruments, with acceleration, velocity, and displacement records of the Denali fault earthquake, 03 November 2002
John R. Evans, E. Gray Jensen, Russell Sell, Christopher D. Stephens, Douglas J. Nyman, Robert C. Hamilton, William C. Hager
2006, Open-File Report 2006-1028
In September, 2003, the Alyeska Pipeline Service Company (APSC) and the U.S. Geological Survey (USGS) embarked on a joint effort to extract, test, and calibrate the accelerometers, amplifiers, and bandpass filters from the earthquake monitoring systems (EMS) at Pump Stations 09, 10, and 11 of the Trans-Alaska Pipeline System (TAPS)....
USGS science in Menlo Park -- a science strategy for the U.S. Geological Survey Menlo Park Science Center, 2005-2015
Thomas M. Brocher, Michael D. Carr, David L. Halsing, David A. John, Victoria E. Langenheim, Margaret T. Mangan, Mark C. Marvin-DiPasquale, John Y. Takekawa, Claire R. Tiedeman
2006, Circular 1290
In the spring of 2004, the U.S. Geological Survey (USGS) Menlo Park Center Council commissioned an interdisciplinary working group to develop a forward-looking science strategy for the USGS Menlo Park Science Center in California (hereafter also referred to as "the Center"). The Center has been the flagship research center for...
Confirmation and calibration of computer modeling of tsunamis produced by Augustine volcano, Alaska
James E. Beget, Zygmunt Kowalik
2006, Science of Tsunami Hazards (24) 257-266
Numerical modeling has been used to calculate the characteristics of a tsunami generated by a landslide into Cook Inlet from Augustine Volcano. The modeling predicts travel times of ca. 50-75 minutes to the nearest populated areas, and indicates that significant wave amplification occurs near Mt. Iliamna on the western...
Tsunami hazards— A national threat
Water Resources Division, U.S. Geological Survey
2006, Fact Sheet 2006-3023
In December 2004, when a tsunami killed more than 200,000 people in 11 countries around the Indian Ocean, the United States was reminded of its own tsunami risks. In fact, devastating tsunamis have struck North America before and are sure to strike again. Especially vulnerable are the five Pacific States--Hawaii, Alaska,...
Paleozoic tectonic and metallogenetic evolution of pericratonic terranes in Yukon, northern British Columbia and eastern Alaska
JoAnne L. Nelson, Maurice Colpron, Stephen Piercey, Cynthia Dusel-Bacon, Donald Murphy, Charlie Roots
2006, Special Paper - Geological Association of Canada (45) 323-360
No abstract available....
Lead isotopic constraints on the metallogeny of middle and late Paleozoic syngenetic base metal occurrences in the Yukon-Tanana and Slide Mountain/Seventymile Terranes and adjacent portions of the North American miogeocline
J.K. Mortensen, Cynthia Dusel-Bacon, J. Hunt, J. Gabites
2006, Special Paper - Geological Association of Canada (45) 261-280
No abstract available....
Paleozoic tectonic and metallogenic evolution of the pericratonic rocks of east-central Alaska and adjacent Yukon Territory
JoAnne L. Nelson, Maurice Colpron, Stephen Piercey, Cynthia Dusel-Bacon, Donald Murphy, Charlie Roots
2006, Special Paper - Geological Association of Canada (45) 25-74
No abstract available....
Sedimentary processes in modern and ancient oceanic arc settings: evidence from the Jurassic Talkeetna Formation of Alaska and the Mariana and Tonga Arcs, western Pacific
Amy E. Draut, Peter D. Clift
2006, Journal of Sedimentary Research (76) 493-514
Sediment deposited around oceanic volcanic ares potentially provides the most complete record of the tectonic and geochemical evolution of active margins. The use of such tectonic and geochemical records requires an accurate understanding of sedimentary dynamics in an arc setting: processes of deposition and reworking that affect the degree to...
Estimating Potential Effects of Hypothetical Oil Spills on Polar Bears
Steven C. Amstrup, George M. Durner, T. L. McDonald, W.R. Johnson
2006, Report
Much is known about the transport and fate of oil spilled into the sea and its toxicity to exposed wildlife. Previously, however, there has been no way to quantify the probability that wildlife dispersed over the seascape would be exposed to spilled oil. Polar bears, the apical predator of the...
Effects of permafrost melting on CO2 and CH4 exchange of a poorly drained black spruce lowland
K.P. Wickland, Robert G. Striegl, J. C. Neff, T. Sachs
2006, Journal of Geophysical Research G: Biogeosciences (111)
[1] Permafrost melting is occurring in areas of the boreal forest region where large amounts of carbon (C) are stored in organic soils. We measured soil respiration, net CO2 flux, and net CH4 flux during May–September 2003 and March 2004 in a black spruce lowland in interior Alaska to...
Application of airborne thermal imagery to surveys of Pacific walrus
D. M. Burn, M.A. Webber, Mark S. Udevitz
2006, Wildlife Society Bulletin (34) 51-58
We conducted tests of airborne thermal imagery of Pacific walrus to determine if this technology can be used to detect walrus groups on sea ice and estimate the number of walruses present in each group. In April 2002 we collected thermal imagery of 37 walrus groups in the Bering Sea...
Long-term golden eagle studies in Denali National Park and Preserve
Carol L. McIntyre, Karen Steenhof, Michael N. Kochert, Michael W. Collopy
2006, Alaska Park Science (5) 42-45
Large-scale movements and habitat characteristics of king eiders throughout the nonbreeding period
Laura M. Phillips, A.N. Powell, E.A. Rexstad
2006, Condor (108) 887-900
King Eiders (Somateria spectabilis) breeding in western Canada and Alaska molt wing feathers and spend the winter in remote areas of the Bering Sea, precluding direct observation. To characterize timing of migration and habitat used by King Eiders during the nonbreeding period, we collected location data for 60 individuals (27...
An isotopic assessment of protein from diet and endogenous stores: Effects on egg production and incubation behaviour of geese
Joel A. Schmutz, K.A. Hobson, J.A. Morse
2006, Ardea (94) 385-397
Little empirical information exists to assess to what degree geese use a capital versus income breeding strategy for investing nutrients into eggs. We used stable isotope methods to directly estimate the sources of protein deposited into egg yolks of Brent Branta bernicla and Emperor Geese Anser canagicus on the Yukon-Kuskokwim...
Interspecific resource partitioning in sympatric ursids
Jerrold L. Belant, Knut Kielland, Erich H. Follmann, Layne G. Adams
2006, Ecological Applications (16) 2333-2343
The fundamental niche of a species is rarely if ever realized because the presence of other species restricts it to a narrower range of ecological conditions. The effects of this narrower range of conditions define how resources are partitioned. Resource partitioning has been inferred but not demonstrated previously for sympatric...
