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Not all publications have extents, not all extents are completely accurate
Effect of hibernation and reproductive status on body mass and condition of coastal brown bears
Grant V. Hilderbrand, C. C. Schwartz, C.T. Robbins, Thomas A. Hanley
2000, Journal of Wildlife Management (64) 178-183
We investigated the effect of hibernation and reproductive status on changes in body mass and composition of adult female brown bears (Ursus arctos) on the Kenai Peninsula, Alaska. This information is fundamental to understanding nutritional ecology of wild brown bear populations. Six adult females handled in the fall and following...
Phylogeography of mitochondrial DNA variation in brown bears and polar bears
Gerald F. Shields, Deborah Adams, Gerald W. Garner, Martine Labelle, Jacy Pietsch, Malcolm Ramsay, Charles Schwartz, Kimberly Titus, Scott Williamson
2000, Molecular Phylogenetics and Evolution (15) 319-326
We analyzed 286 nucleotides of the middle portion of the mitochondrial cytochrome b gene of 61 brown bears from three locations in Alaska and 55 polar bears from Arctic Canada and Arctic Siberia to test our earlier observations of paraphyly between polar bears and brown bears as well as to...
Frequency dependent Lg attenuation in south-central Alaska
D.E. McNamara
2000, Geophysical Research Letters (27) 3949-3952
The characteristics of seismic energy attenuation are determined using high frequency Lg waves from 27 crustal earthquakes, in south-central Alaska. Lg time-domain amplitudes are measured in five pass-bands and inverted to determine a frequency-dependent quality factor, Q(f), model for south-central Alaska. The inversion in this study yields the frequency-dependent quality...
Effects of white phosphorus on mallard reproduction
S.I. Vann, D. W. Sparling, M. A. Ottinger
2000, Environmental Toxicology and Chemistry (19) 2525-2531
Extensive waterfowl mortality involving thousands of ducks, geese, and swans has occurred annually at Eagle River Flats, Alaska since at least 1982. The primary agent for this mortality has been identified as white phosphorus. Although acute and subacute lethality have been described, sublethal effects are less well known. This study...
Annual survival and site fidelity of Stellar's Eiders molting along the Alaska Peninsula
Paul L. Flint, Margaret R. Petersen, Christian P. Dau, James E. Hines, James D. Nichols
2000, Journal of Wildlife Management (64) 261-268
Populations of Steller's eiders (Polysticta stelleri) molting and wintering along the Alaska Peninsula have declined since the 1960's. We captured and marked a large sample of Steller's eiders molting in 2 lagoons along the Alaska Peninsula between 1975-97. We used mark-recapture analysis techniques to estimate annual survival and movement probabilities...
Alaska resource data file, Chignik quadrangle
Steven H. Pilcher
2000, Open-File Report 2000-130
Descriptions of the mineral occurrences can be found in the report. See U.S. Geological Survey (1996) for a description of the information content of each field in the records. The data presented here are maintained as part of a statewide database on mines, prospects and mineral occurrences throughout Alaska....
Preliminary volcano-hazard assessment for the Katmai volcanic cluster, Alaska
Judy Fierstein, Wes Hildreth
2000, Open-File Report 2000-489
The world’s largest volcanic eruption of the 20th century broke out at Novarupta (fig. 1) in June 1912, filling with hot ash what came to be called the Valley of Ten Thousand Smokes and spreading downwind more fallout than all other historical Alaskan eruptions combined. Although almost all the magma...
Ecology and demographics of Pacific sand lance, Ammodytes hexapterus Pallas, in Lower Cook Inlet, Alaska
Martin D. Robards, John F. Piatt
2000, Report
Distinct sand lance populations occur within the relatively small geographic area of Lower Cook Inlet, Alaska. Marked meso-scale differences in abundance, growth, and mortality exist as a consequence of differing oceanographic regimes. Growth rate within populations (between years) was positively correlated with temperature. However, this did not extend to inter-population...
Preliminary volcano-hazard assessment for Aniakchak Volcano, Alaska
Christina A. Neal, Robert G. McGimsey, Thomas P. Miller, James R. Riehle, Christopher F. Waythomas
2000, Open-File Report 00-519
Aniakchak is an active volcano located on the Alaska Peninsula 670 kilometers southwest of Anchorage. The volcano consists of a dramatic, 10-kilometer-diameter, 0.5 to 1.0-kilometer-deep caldera that formed during a catastrophic eruption 3,500 years ago. Since then, at least a dozen separate vents within the caldera have erupted, often explosively,...
Map of Distribution of Bottom Sediments on the Continental Shelf, Gulf of Alaska
Kevin R. Evans, Paul R. Carlson, Monty A. Hampton, Michael S. Marlow, Peter W. Barnes
2000, Miscellaneous Field Studies Map 2335
Introduction The U.S. Geological Survey has a long history of exploring marine geology in the Gulf of Alaska. As part of a cooperative program with other federal and state agencies, the USGS is investigating the relations between ocean-floor geology and benthic marine biohabitats. This bottom sediment map, compiled from published literature...
Preliminary bathymetry of Shoup Basin and late Holocene changes of Shoup Glacier, Alaska
Austin Post, R.J. Viens
2000, Water-Resources Investigations Report 94-4093
Shoup Glacier is a retreating, tidewater-calving glacier in northeast Prince William Sound, Alaska. Historical records, vegetation distribution, and sediment depth in Shoup Bay indicate that the glacier reached a late Holocene maximum at the mouth of Shoup Bay prior to 1750. When first observed around 1900, the terminus was stable...
Preliminary hydraulic analysis and implications for restoration of Noyes Slough, Fairbanks, Alaska
Robert L. Burrows, Dustin E. Langley, David M. Evetts
2000, Water-Resources Investigations Report 2000-4227
The present-day channels of the Chena River and Noyes Slough in downtown Fairbanks, Alaska, were formed as sloughs of the Tanana River, and part of the flow of the Tanana River occupied these waterways. Flow in these channels was reduced after the completion of Moose Creek Dike in 1945, and...
Physical characteristics of dungeness crab and halibut habitats in Whidbey Passage, Alaska
Guy R. Cochrane, Paul R. Carlson, Michael E. Boyle, Gregory L. Gabel, Philip N. Hooge
2000, Open-File Report 2000-32
In Glacier Bay National Park, Alaska there are ongoing studies of Dungeness Crab (Cancer magister) and Pacific Halibut (Hippoglosus stenolepis). Scientists of the United States Geological Survey (USGS) are attempting to ascertain life history, distribution, and abundance, and to determine the effects of commercial fishing in the park (Carlson et...
Nitrate source indicators in ground water of the Scimitar Subdivision, Peters Creek area, Anchorage, Alaska
Bronwen Wang, Pat M. Strelakos, Brett Jokela
2000, Water-Resources Investigations Report 2000-4137
A combination of aqueous chemistry, isotopic measurement, and in situ tracers were used to study the possible nitrate sources, the factors contributing to the spatial distribution of nitrate, and possible septic system influence in the ground water in the Scimitar Subdivision, Municipality of Anchorage, Alaska. Two water types were distinguished...
Geologic map of the Wildcat Lake 7.5' quadrangle, Kitsap and Mason Counties, Washington
Peter J. Haeussler, Kenneth P. Clark
2000, Open-File Report 2000-356
The Wildcat Lake quadrangle lies in the forearc of the Cascadia subduction zone, about 20-km east of the Cascadia accretionary complex exposed in the Olympic Mountains (Tabor and Cady, 1978),and about 100-km west of the axis of the Cascades volcanic arc. The quadrangle lies near the middle of the Puget...
Mass balance, meteorological, ice motion, surface altitude, runoff, and ice thickness data at Gulkana Glacier, Alaska, 1995 balance year
Rod S. March
2000, Water-Resources Investigations Report 2000-4074
The 1995 measured winter snow, maximum winter snow, net, and annual balances in the Gulkana Glacier basin were evaluated on the basis of meteorological, hydrological, and glaciological data obtained in the basin. Averaged over the glacier, the measured winter snow balance was 0.94 meter on April 19, 1995, 0.6 standard...