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: 3095
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
ODP investigates Indian Ocean origins ODP investigates Indian Ocean origins
No abstract available.
Authors
F.M. Gradstein, J. Ludden
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
Foraging by northern fulmars (Fulmarus glacialis) at a nearshore, anticyclonic tidal eddy in the northern Bering Sea, Alaska Foraging by northern fulmars (Fulmarus glacialis) at a nearshore, anticyclonic tidal eddy in the northern Bering Sea, Alaska
Northern Fulmars (Fulmar glacialis) fed on ice-associated macrofauna (probably gammarid amphipods) and pinniped offal concentrated by convergent flow at an eddy boundary near Northwest Cape on St. Lawrence Island, Alaska. The eddy was anticyclonic, measured approximately 1.5 by 2.25 km, and was generated by nearshore streaming induced by the cape’s topography during lesser flood stage of...
Authors
J. Christopher Haney
Geologic studies in Alaska by the U.S. Geological Survey during 1987 Geologic studies in Alaska by the U.S. Geological Survey during 1987
This volume is a continuation of the annual United States Geological Survey (USGS) Circulars reporting results of work in progress on earth science investigations in Alaska. The series began in 1975 under the title "The United States Geological Survey in Alaska - Accomplishments during 19xx" and has continued since 1986 under the present title. The 40 short papers and the feature article...
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
Polar Bear Polar Bear
Polar bears are long-lived, late-maturing carnivores that have relatively low rates of reproduction and natural mortality. Their populations are susceptible to disturbance from human activities, such as the exploration and development of mineral resources or hunting. Polar bear populations have been an important renewable resource available to coastal communities throughout the Arctic...
Authors
S.D. Amstrup
Review of the distribution and feeding ecology of seabirds in the oceanic subarctic north Pacific Ocean Review of the distribution and feeding ecology of seabirds in the oceanic subarctic north Pacific Ocean
No abstract available.
Authors
Gerald A. Sanger, David G. Ainley
Seasonal occurrence of migrant whimbrels and bristle-thighed curlews on the Yukon-Kuskokwim Delta, Alaska Seasonal occurrence of migrant whimbrels and bristle-thighed curlews on the Yukon-Kuskokwim Delta, Alaska
Migrant Whimbrels (Numenius phaeopus) and Bristle-thighed Curlews (N. tahitiensis) were recorded during five summers along coastal tundra of the Yukon-Kuskokwim Delta, Alaska. From June to September, 1975-1979, 358 flocks totalling 1,265 curlews were observed; an additional 54 flocks were identified by vocalization alone. Among the 359 flocks identified to species, 52% were of Whimbrels...
Authors
Colleen M. Handel, Christian P. Dau
Effects of the 1982-83 El Niño – Southern Oscillation on Pacific Ocean bird populations Effects of the 1982-83 El Niño – Southern Oscillation on Pacific Ocean bird populations
Seabird reproductive success, population size, and movements in the Pacific region responded dramatically to the 1982-83 El Niño – Southern Oscillation (ENSO). At sites within the North and South Pacific Gyres, the onset of seabird responses tracked oceanographic changes related to ENSO; to the north of the gyres, responses were delayed 1 yr. Reproductive failures and high adult...
Authors
David G. Ainley, H.R. Carter, Daniel W. Anderson, Kenneth T. Briggs, Malcom C. Coulter, F. Cruz, J.B. Cruz, C.A. Valle, S.I. Fefer, Scott A. Hatch, Elizabeth Anne Schreiber, Ralph W. Schreiber, N.G. Smith
Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska peninsula Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska peninsula
This report contains brief descriptions of known mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles on the Alaska Peninsula. These quadrangles, and the adjoining Simeonof Island quadrangle to the south were the subject of an Alaska Mineral Resource Assessment Program (AMRAP) mapping and mineral resource assessment project. This compilation of...
Authors
Frederic H. Wilson, Willis H. White, Gregory D. DuBois