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: 2892
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
No abstract available.
Authors
Susan M. Karl, Julie A. Dumoulin, Inyo Ellersieck, A. G. Harris, J. M. Schmidt
Twenty-four hour behavior patterns and budgets of free-ranging reindeer in winter
To obtain movement data on wild fulvous tree ducks (Dendrocygna bicolor) 165 immature pen-reared fulvous tree ducks were color-marked and released in three southeast Texas counties in July October 1969/70. Nine (5 percent) of the marked birds were recovered from 3 days to 9 months after release, and an additional 15 birds provided sight records. Many released birds apparently became integrated in
Authors
W. B. Collins, T. S. Smith
Baleen whales and their prey in a coastal environment
Patterns of abundance of humpback (Megaptera novaeangliae), fin (Balaenoptera physalus), and minke (Balaenoptera acutorostrata) whales are described in relation to the abundance of their primary prey, capelin (Mallotus villosus), during 1982–1985 at Witless Bay, Newfoundland. The abundance ratio of the three whale species was 10:1:3.5, respectively. Abundance of all whale species was strongly corr
Authors
John F. Piatt, David A. Methven, Alan E. Burger, Ruth L. McLagan, Vicki Mercer, Elizabeth Creelman
Diurnal and seasonal patterns of colony attendance in the Northern Fulmar, Fulmarus glacialis
The annual cycle of Northern Fulmars (Fulmarus glacialis) in the western Gulf of Alaska includes about six months from mid-April to mid-October when birds are associated with land at the Semidi Islands. The pre-laying stage in five years was marked by recurrent peaks in attendance that included up to 90% of the population, and alternate periods of 2 to 12 days when the breeding ground was deserted
Authors
Scott A. Hatch
The Resurrection Peninsula ophiolite
The Resurrection Peninsula forms the east side of Resurrection Bay (fig. 3). Relief ranges from 437 m (1,434 ft) at the southern end of the peninsula to more than 1,463 m (4,800 ft) opposite the head of the bay. All rock units composing the informally named Resurrection Peninsula ophiolite of Nelson and others (1987) are visible or accessible by boat."Ophiolite" has been a geologic term since 1827
Authors
Steven W. Nelson, Marti L. Miller, Julie A. Dumoulin
Terrain, vegetation, and landscape evolution of the R4D research site, Brooks Range Foothills, Alaska
Maps of the vegetation and terrain of a 22 km2 area centered on the Department of Energy (DOE) R4D (Response, Resistance, Resilience to and Recovery from Disturbance in Arctic Ecosystems) study site in the Southern Foothills Physiographic Province of Alaska were made using integrated geobotanical mapping procedures and a geographic-information system. Typical land forms and surface f orms include
Authors
D.A. Walker, Emily F. Binnian, B. M. Evans, N.D. Lederer, E.A. Nordstrand, P.J. Webber
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 the tested
Authors
A. J. Horowitz, K. A. Elrick, R.C. Hooper
Geologic setting, petrology, and age of Pliocene to Holocene volcanoes of the Stepovak Bay area, western Alaska Peninsula: A section in Geologic studies in Alaska by the U.S. Geological Survey, 1988
Five volcanoes are situated north of Stepovak Bay on the western Alaska Peninsula; only one of these, Kupreanof volcano, had been reported prior to USGS reconnaissance geologic mapping of the area between 1982 and 1986. The volcanoes overlie sedimentary rocks of Eocene to late Miocene age and welded(?) tuff deposits of uncertain, but presumably late Tertiary, age. All five of the volcanoes are ali
Authors
Frederic H. Wilson
Creation of a full color geologic map by computer: A case history from the Port Moller project resource assessment, Alaska Peninsula: A section in Geologic studies in Alaska by the U.S. Geological Survey, 1988
Graphics programs on computers can facilitate the compilation and production of geologic maps, including full color maps of publication quality. This paper describes the application of two different programs, GSMAP and ARC/INFO, to the production of a geologic map of the Port Meller and adjacent 1:250,000-scale quadrangles on the Alaska Peninsula. GSMAP was used at first because of easy digitizing
Authors
Frederic H. Wilson
Reproductive performance of Rio Grande wild turkeys
Frequency, magnitude, and timing of reproduction in Rio Grande Wild Turkey (Meleagris gallopavo intermedia) hens were studied in northeastern Colorado in 1986 and 1987. All adults (n = 12) and 95% (n = 20) of yearlings were known to attempt nesting. Adults initiated first nest attempts earlier than yearlings in 1987 but not 1986. Adults and yearlings did not differ in clutch size or nesting succes
Authors
Joel A. Schmutz, Clait E. Braun
Nest habitat use of Rio Grande wild turkeys
Nest habitat use of Rio Grande Wild Turkeys (Meleagris gallopavo intermedia) was studied along the South Platte River in northeast Colorado in 1986-87. Thirty-three of 35 nests were in riparian habitats. Nests were either in western snowberry (Symphoricarpos occidentalis) (67%) or mixed forbs and grasses (33%). Early season nests were more likely to be in snowberry than late season nests. Nest sit
Authors
Joel A. Schmutz, Clait E. Braun, William F. Andelt