Publications
USGS research activities relevant to Alaska have yielded more than 9400 historical publications. This page features some of the most recent newsworthy research findings.
Filter Total Items: 3110
A comparison of instrumental dewatering methods for the separation and concentration of suspended sediment for subsequent trace element analysis A comparison of instrumental dewatering methods for the separation and concentration of suspended sediment for subsequent trace element analysis
A comparison involving both field and laboratory trials was performed to evaluate the utility of two continuous-flow centrifuges and a tangential-flow filtration system for dewatering suspended sediments for subsequent trace element analysis. Although recovery efficiencies for the various devices differ, the analytical results from the separated suspended sediments indicate that any of...
Authors
A. J. Horowitz, K. A. Elrick, R.C. Hooper
Interpretation of exploration geochemical data from the Ugashik, Bristol Bay, and western Karluk quadrangles, Alaska Interpretation of exploration geochemical data from the Ugashik, Bristol Bay, and western Karluk quadrangles, Alaska
No abstract available.
Authors
S. E. Church, James G. Frisken, Frederic H. Wilson
Geologic studies in Alaska by the U.S. Geological Survey, 1988 Geologic studies in Alaska by the U.S. Geological Survey, 1988
This volume continues the annual series of U.S. Geological Survey (USGS) reports on geologic investigations in Alaska. Since 1975, when the first of these collections of short papers appeared under the title "The United States Geological Survey in Alaska: Accomplishments during 1975," the series has been published as USGS circulars. This bulletin departs from the circular style, in part...
Pre-field study and mineral resource assessment of the Sleetmule quadrangle, southwestern Alaska Pre-field study and mineral resource assessment of the Sleetmule quadrangle, southwestern Alaska
No abstract available.
Authors
Marti L. Miller, H. E. Belkin, R. B. Blodgett, T. K. Bundtzen, J. W. Cady, R.J. Goldfarb, J. E. Gray, R. G. McGimsey, S. L. Simpson
Preliminary geologic map of the Baird Mountains and part of the Selawik quadrangles, Alaska Preliminary geologic map of the Baird Mountains and part of the Selawik quadrangles, Alaska
No abstract available.
Authors
Susan M. Karl, Julie A. Dumoulin, Inyo Ellersieck, A. G. Harris, J.M. Schmidt
Summer production of coho salmon stocked in Mount St. Helens streams 3-6 years after the 1980 eruption Summer production of coho salmon stocked in Mount St. Helens streams 3-6 years after the 1980 eruption
We monitored habitat use and summer production of stocked underyearling coho salmon Oncorhynchus kisutch from 1983 to 1986 in three streams affected by the 1980 eruption of Mount St. Helens, Washington. Two streams were in the blast area and one was on a volcanic mudflow terrace, Midsummer water temperatures frequently exceeded presumed stressful thresholds and occasionally surpassed the...
Authors
P.A. Bisson, J.L. Nielsen, J.W. Ward
Channel hydraulics, habitat use, and body form of juvenile coho salmon, steelhead, and cutthroat trout in streams Channel hydraulics, habitat use, and body form of juvenile coho salmon, steelhead, and cutthroat trout in streams
Habitat use by juvenile coho salmon Oncorhynchus kisutch, steelhead Salmo gairdneri, and the coastal subspecies of cutthroat trout Salmo clarki clarki in small streams in western Washington was influenced by hydraulic characteristics of different types of channel units. Coho salmon preferred pools with average velocities less than 20 cm/s; very few fish were found in riffles with high...
Authors
P.A. Bisson, K. Sullivan, J.L. Nielsen
Geology and mineral resources of the Port Moller region, western Alaska Peninsula, Aleutian arc: A section in USGS research on mineral resources - 1989: Program and abstracts Geology and mineral resources of the Port Moller region, western Alaska Peninsula, Aleutian arc: A section in USGS research on mineral resources - 1989: Program and abstracts
Geologic mapping of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles was begun under the auspices of the Alaska Mineral Resource Assessment Program (AMRAP) in 1983 . Two important mineral deposits are located in the Port Moller quadrangle; the Pyramid prospect is the largest copper porphyry system in the Aleutian Arc, and the Apollo Mine is the only gold mine to reach...
Authors
Frederic H. Wilson, Willis H. White, Robert L. Detterman
Populations, productivity, and feeding habits of seabirds on St. Lawrence Island, Alaska: Final report Populations, productivity, and feeding habits of seabirds on St. Lawrence Island, Alaska: Final report
A field camp was established at Kongkok Bay near the southwest cape of St. Lawrence Island and occupied continuously from 24 May to 2 September 1987. Permanent study plots were selected for both cliff and crevice-nesting species, and regular observations were made throughout the breeding season to document attendance patterns, breeding phenology, and success. Periodic collections of...
Authors
John F. Piatt, Scott A. Hatch, Bay D. Roberts, Wayne W. Lidster, John L. Wells, J. Christopher Haney
Testing for individual variation in breeding success Testing for individual variation in breeding success
No abstracta available.
Authors
Scott A. Hatch
Survival of aluminum and monel bands on black brant Survival of aluminum and monel bands on black brant
Three recoveries of Black Brant (Branta bernicla nigricans) were recently reported in the "Significant Encounters" section of North American Bird Bander (Anon. 1986). At the time of recovery these Brant were 21.5, 22 and at least 22.5 years old. The significance of these recoveries caught my attention as all were of birds banded on the Yukon Delta, Alaska in 1963 by the Alaska Department...
Authors
Calvin J. Lensink
Littoral foraging by red phalaropes during spring in the northern Bering Sea Littoral foraging by red phalaropes during spring in the northern Bering Sea
Phalaropes demonstrate considerable plasticity in their choice of foraging habitats. The Red Phalarope (Phalaropus fulicaria) alternates use of pelagic environments in winter and migration (Taning 1933, Stanford 1953, Briggs et al 1984) with wet tundra habitats during the breeding season (Kistchinski 1975, Mayfield 1979, Ridley 1980). Foods available and taken in littoral zones of the...
Authors
J. Christopher Haney, Amy E. Stone