Hydrogeologic investigations at the Nevada Test Site
W.L. Hawkins, D. A. Trudeau, S.L. Drellack
1993, Book chapter, Hydrogeologic investigation, evaluation, and ground water modeling
No abstract available...
Toxicity and bioaccumulation of waterborne and dietary selenium in juvenile bluegill (Lepomis macrochirus)
Laverne Cleveland, Edward E. Little, Denny R. Buckler, Raymond H. Wiedmeyer
1993, Aquatic Toxicology (27) 265-279
Juvenile bluegill (Lepomis macrochirus) were exposed to waterborne selenium as a 6:1 mixture of selenate to selenite (as Se) for 60 d and to dietary seleno-l-methionine for 90 d. Measured concentrations of total selenium in the waterborne exposure ranged from 0.16 to 2.8 mg/l, and concentrations of seleno-l-methionine...
Effects of mitigative measures on productivity of white sturgeon populations in Columbia River downstream from McNary Dam
Allen I. Miller, T.D. Counihan, M.J. Parsley, L.G. Beckman
1993, Report, Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam
No abstract available...
Losses of seabirds in gill nets in the North Pacific
Anthony R. DeGange, Robert H. Day, Jean E. Takekawa, Vivian M. Mendenhall
Kees Vermeer, K.T. Briggs, K.H. Morgan, D. Siegel-Causey, editor(s)
1993, Conference Paper, The status, ecology and conservation of marine birds of the North Pacific
Existing knowledge on high-seas and coastal gillnet fisheries known to kill seabirds in the North Pacific is summarized. Recent estimates suggest that high-seas gillnet fisheries may have taken more than 500,000 seabirds in 1990. The majority of birds taken in those fisheries were Sooty Puffinus griseus or Short-tailed P. tenuirostris...
Estimation of recharge by the U.S. Geological Survey
G.E. Groschen
1993, Conference Paper, Proceedings: Texas sections joint spring meeting and Texas hydrology roundup
No abstract available ...
Status and ecology of kittiwakes (Rissa tridactyla and R. brevirostris) in the North Pacific
Scott A. Hatch, G.V. Byrd, D.B. Irons, G.L. Hunt Jr.
Kees Vermeer, K.T. Briggs, K.H. Morgan, D. Siegel-Causey, editor(s)
1993, Conference Paper, The status, ecology and conservation of marine birds of the North Pacific
Black-legged Kittiwakes (Rissa tridactyla) are widely distributed in the subarctic North Pacific and adjacent seas, with a total breeding population of about 2.6 million individuals. Red-legged Kittiwakes (R. brevirostris) breed in four locations, and at least 95% of their estimated world population of 230,000 birds nest on one island (St....
Diatoms
J.A. Barron
1993, Book chapter, Fossil prokaryotes and protists
No abstract available ...
Scaling of the critical slip distance for seismic faulting with shear strain in fault zones
Chris Marone, Brian D. Kilgore
1993, Nature (362) 618-621
THEORETICAL and experimentally based laws for seismic faulting contain a critical slip distance1-5, Dc, which is the slip over which strength breaks down during earthquake nucleation. On an earthquake-generating fault, this distance plays a key role in determining the rupture nucleation dimension6, the amount of premonitory and post-seismic slip7-10, and...
Illite crystallite thickness by X-ray diffraction
D. D. Eberl, A.E. Blum
1993, Conference Paper, Computer applications to X-ray powder diffraction analysis of clay minerals
No abstract available ...
Managing the data explosion
Richard P. Hooper, Brent T. Aulenbach
1993, Civil Engineering (63) 74-76
The 'data explosion' brought on by electronic sensors and automatic samplers can strain the capabilities of existing water-quality data-management systems just when they're needed most to process the information. The U.S. Geological Survey has responded to the problem by setting up an innovative system that allows rapid data analysis....
Feasibility of radio telemetry to document fish movement and habitat use in Lower Columbia River impoundments
P.J. Anders, L.B. Beckman
1993, Report, Status and habitat requirements of the white sturgeon populations in the Columbia River downstream from McNary Dam, Volume II
No abstract available...
A recruitment index for white sturgeon in the Columbia River downstream from McNary Dam
Allen I. Miller, L.G. Beckman
1993, Report, Status and habitat requirements of white sturgeon populations in the Columbia River downstream from McNary Dam, Volume II
No abstract available...
Isolation and chemical characterization of dissolved and colloidal organic matter
G. Aiken, J. Leenheer
1993, Chemistry and Ecology (8) 135-151
Commonly used techniques for the concentration and isolation of organic matter from water, such as preparative chromatography, ultrafiltration and reverse osmosis, and the methods used to analyze the organic matter obtained by these methods are reviewed. The development of methods to obtain organic matter that is associated with fractions of...
Atrazine degradation in a small stream in Iowa
D.W. Kolpin, S. J. Kalkhoff
1993, Environmental Science & Technology (27) 134-139
A study was conducted during 1990 through an 11.2-km reach of Roberts Creek in northeastern Iowa to determine the fate of atrazine in a surface water environment Water samples were collected at ~1-month intervals from April through November during stable low to medium flow conditions and analyzed for atrazine and...
Status of the northern elephant seal population along the U.S. west coast in 1992
J. Barlow, P. Boveng, M.S. Lowry, B.S. Stewart, B. J. Le Boeuf, W.J. Sydeman, R.J. Jameson, S.G. Allen, C.W. Oliver
1993, Administrative Report LJ-93-01
No abstract available at this time...
Distribution and abundance of predators that affect duck production--prairie pothole region
A.B. Sargeant, R. J. Greenwood, M.A. Sovada, T.L. Shaffer
1993, Resource Publication 194
During 1983-88, the relative abundance of 18 species and species-groups of mammalian and avian predators affecting duck production in the prairie pothole region was determined in 33 widely scattered study areas ranging in size from 23-26 km2. Accounts of each studied species and species-group include habitat and history, population structure...
Monte Carlo simulations of multiphase flow incorporating spatial variability of hydraulic properties
Hedeff I. Essaid, Kathryn M. Hess
1993, Groundwater (31) 123-134
To study the effect of spatial variability of sediment hydraulic properties on multiphase flow, oil infiltration into a hypothetical glacial outwash aquifer, followed by oil extraction, was simulated using a cross-sectional multiphase flow model. The analysis was simplified by neglecting capillary hysteresis. The first simulation used a uniform mean permeability...
Application of Conjugate Gradient methods to tidal simulation
E. Barragy, G. F. Carey, R. A. Walters
1993, Advances in Water Resources (16) 163-171
A harmonic decomposition technique is applied to the shallow water equations to yield a complex, nonsymmetric, nonlinear, Helmholtz type problem for the sea surface and an accompanying complex, nonlinear diagonal problem for the velocities. The equation for the sea surface is linearized using successive approximation and then discretized with linear,...
A new technique for the detection of Renibacterinium salmoninarum
W. B. Schill
1993, Research Information Bulletin 101
No abstract available at this time...
Scour at a bridge over the Weldon River, Iowa
Edward E. Fischer
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Contraction scour at the State Highway 2 bridge over the Weldon River in south-central Iowa was caused by a flood of record proportions on September 14 and 15, 1992. The peak discharge was 1, 930 cubic meters per second,which was 4 times the probable 100-year flood used to design the...
Non-shear focal mechanisms of earthquakes at The Geysers, California and Hengill, Iceland, geothermal areas
B.R. Julian, A.D. Miller, G.R. Foulger
Anon, editor(s)
1993, Conference Paper, Transactions - Geothermal Resources Council
Several thousand earthquakes were recorded in each area. We report an initial investigation of the focal mechanisms based on P-wave polarities. Distortion by complicated three-dimensional crustal structure was minimized using tomographically derived three-dimensional crustal models. Events with explosive and implosive source mechanisms, suggesting cavity opening and collapse, have been tentatively...
Sorption of N2 and EGME vapors on some soils, clays, and mineral oxides and determination of sample surface areas by use of sorption data
C. T. Chiou, D.W. Rutherford, M. Manes
1993, Environmental Science & Technology (27) 1587-1594
Vapor sorption isotherms of ethylene glycol monoethyl ether (EGME) at room temperature and isotherms of N2 gas at liquid nitrogen temperature were determined for various soils and minerals. The N2 monolayer capacities [Qm (N2)] were calculated from the BET equation and used to determine the surface areas. To examine whether...
Rheometry of natural sediment slurries
Jon J. Major
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Recent experimental analyses of natural sediment slurries yield diverse results yet exhibit broad commonality of rheological responses under a range of conditions and shear rates. Results show that the relation between shear stress and shear rate is primarily nonlinear, that the relation can display marked hysteresis, that minimum shear stress...
Undiscovered oil and gas resources and leasing status of forestlands in Wyoming
M.R. Holm, R. B. Powers, G.L. Dolton, B. E. Law, J. E. Fox, J. S. Dersch
1993, Book chapter, Wyoming Geological Association jubilee anniversary field conference
All of four national forests, one national grassland, and parts of four additional forests lie within the State of Wyoming. Some of these National Forest System lands have moderate to high potential for undiscovered oil and gas resources. In the 1989 National Assessment of undiscovered oil and gas and...
Effect of vitamin E on the immune response of channel catfish to Edwardsiella ictaluri
D.J. Wise, J.R. Tomasso, T.E. Schwedler, V. S. Blazer, D.M.I. Gatlin
1993, Journal of Aquatic Animal Health (5) 183-188
Three-month-old fingerling channel catfish Ictalurus punctatus were fed purified diets supplemented with ∝-tocopherol acetate to provide 0, 60, and 2,500 mg vitamin E/kg for 180 d. A 30-s immersion bath and an oral booster were used to deliver a bacterin of formalin-killed Edwardsiella ictaluri to half of the fish from...
