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: 2890
Controls on accretion of flysch and melange belts at convergent margins: Evidence from the Chugach Bay thrust and Iceworm melange, Chugach accretionary wedge, Alaska
Controls on accretion of flysch and mélange terranes at convergent margins are poorly understood. Southern Alaska's Chugach terrane forms the outboard accretionary margin of the Wrangellia composite terrane, and consists of two major lithotectonic units, including Triassic-Cretaceous mélange of the McHugh Complex and Late Cretaceous flysch of the Valdez Group. The contact between the McHugh Comple
Authors
Timothy M. Kusky, Dwight Bradley, Peter J. Haeussler, Susan M. Karl
Aerial videography for estimating goose populations staging in Izembek Lagoon, Alaska
We conducted experimental photographic surveys of black brant and Canada geese in a pre-migration staging area on the Alaska Peninsula to compare precision and efficiency of this technique to currently employed ocular estimates. Video and digital cameras sensitive to near infrared and visible radiation were tested at various altitudes and with lenses of different focal length. Using information fr
Authors
R.M. Anthony, R.A. Stehn, W.H. Anderson
Hydrocarbons in hair, livers, and intestines of sea otters (Enhydra lutris) found dead along the path of the Exxon Valdez oil spill
No abstract available.
Authors
Brenda E. Ballachey, Kimberly A. Kloecker
Hydrocarbon residues in tissues of sea otters (Enhydra lutris) collected following the Exxon Valdez Oil Spill
No abstract available.
Authors
Brenda E. Ballachey, Kimberly A. Kloecker
Hydrocarbon residues in tissues of sea otters (Enhydra lutris) collected from southeast Alaska
No abstract available.
Authors
Brenda E. Ballachey, Kimberly A. Kloecker
Recovery strategies for the California clapper rail (Rallus longirostris obsoletus) in the heavily-urbanized San Francisco estuarine ecosystem
The California clapper rail (Rallus longirostris obsoletus), a Federal- and State-listed endangered marsh bird, has a geographic range restricted to one of the most heavily-urbanized estuaries in the world. The rail population has long been in a state of decline, although the exact contribution of each of the many contributing causes remains unclear. The rail is one of the key targets of emerging
Authors
Theodore C. Foin, E. Jacqueline Garcia, Robert E. Gill, Steven D. Culberson, Joshua N. Collins
Genetic differentiation of sockeye salmon subpopulations from a geologically young Alaskan lake system
The Tustumena lake drainage in southcentral Alaska is glacially turbid and geologically young (
Authors
C. V. Burger, William J. Spearman, M. A. Cronin
Estimating age of sea otters with cementum layers in the first premolar
We assessed sources of variation in the use of tooth
cementum layers to determine age by comparing counts in premolar tooth
sections to known ages of 20 sea otters (Enhydra lutris). Three
readers examined each sample 3 times, and the 3 readings of each
sample were averaged by reader to provide the mean estimated age. The
mean (SE) of known age sample was 5.2 years (1.0) an
Authors
James L. Bodkin, J.A. Ames, R.J. Jameson, A. M. Johnson, G.M. Matson
Home ranges and movements of arctic fox (Alopex lagopus) in western Alaska
During the period from 1985 to 1990, radio collars were attached to 61 arctic foxes (Alopex lagopus) in the coastal region of the Yukon-Kuskokwim Delta in western Alaska. Radio tracking using hand-held receivers from aircraft and from fixed towers was conducted to determine daily and seasonal movements of foxes. Intensive radio tracking of 18 foxes from May through July indicated that males used l
Authors
R. Michael Anthony
Water Resources Data for Alaska, Water Year 1996
Water resources data for the 1996 water year for Alaska consist of records of stage, discharge, and water quality of streams; stages of lakes; and water levels and water quality of ground water. This volume contains records for water discharge at 85 gaging stations; stage or contents only at 5 gaging stations; water quality at 19 gaging stations; and water levels for 49 observation wells. Also inc
Authors
K.R. Linn, S.K. Shaw, W.C. Swanner, R. L. Rickman, M.F. Schellekens
Precious metals associated with Late Cretaceous-early Tertiary igneous rocks of southwestern Alaska
Placer gold and precious metal-bearing lode deposits of southwestern Alaska lie within a region 550 by 350 km, herein referred to as the Kuskokwim mineral belt. This mineral belt has yielded 100,240 kg (3.22 Moz) of gold, 12, 813 kg (412,000 oz) of silver, 1,377,412 kg (39,960 flasks) of mercury, and modest amounts of antimony and tungsten derived primarily from the late Cretaceous-early Tertiary
Authors
Thomas K. Bundtzen, Marti L. Miller
Epithermal mercury-antimony and gold-bearing vein lodes of southwestern Alaska
Epithermal mineral deposits and occurrences of southwestern Alaska consist of Hg-Sb and gold- and sulfide-bearing vein lodes. Numerous Hg-Sb lodes are located throughout a region measuring several tens of thousands of square kilometers in and surrounding the Kuskokwim River basin in southwestern Alaska. The Hg-Sb lodes are hosted in sedimentary rocks of the Cretaceous Kuskokwim Group, the Triassic
Authors
John E. Gray, Carol A. Gent, Lawrence W. Snee, Frederic H. Wilson