Detection of Vibrio anguillarum antigen by the dot blot assay
R. C. Cipriano, J.B. Pyle, C. E. Starliper, S. W. Pyle
1985, Journal of Wildlife Diseases (21) 211-218
The dot blot assay, modified and adapted for detection of antigens from Vibrio anguillarum in fish tissues, was specific for V. anguillarum and did not react with antigens of V. ordalii, Pseudomonas sp., or Yersinia ruckeri. The blot assay enabled detection of as little as 2.3 ng of a mixture of...
Anomalous hydrogen emissions from the San Andreas fault observed at the Cienega Winery, central California
M. Sato, A. J. Sutton, K.A. McGee
1985, Pure and Applied Geophysics PAGEOPH (122) 376-391
We began continuous monitoring of H2 concentration in soil along the San Andreas and Calaveras faults in central California in December 1980, using small H2/O2 fuel-cell sensors. Ten monitoring stations deployed to date have shown that anomalous H2 emissions take place occasionally in addition to diurnal changes. Among the ten...
MODELING HYDRAULIC PROBLEMS USING THE CVBEM AND THE MICROCOMPUTER.
Chintu Lai, T. V. Hromadka II
1985, Conference Paper
The Complex Variable Boundary Element Method (CVBEM) offers an effective and efficient means for modeling two-dimensional potential and related flow problems. The method has been applied to various hydraulic and hydrodynamic problems - surface water, ground water, and other flows - and has proven its accuracy, reliability and usefulness. The...
The complex variable boundary element method: Applications
T. V. Hromadka II, C.C. Yen, G. L. Guymon
1985, International Journal for Numerical Methods in Engineering (21) 1013-1025
The complex variable boundary element method (CVBEM) is used to approximate several potential problems where analytical solutions are known: A modelling result produced from the CVBEM is a measure of relative error in matching the known boundary condition values of the problem. A CVBEM error-reduction...
The 1983 hydraulic jump in Crystal Rapid: Implications for river- running and geomorphic evolution in the Grand Canyon
S. W. Kieffer
1985, Journal of Geology (93) 385-406
At Crystal Creek, a debris fan was emplaced in 1966, constricting the channel of the Colorado River to about 0.25 of its upstream width between 1967 and 1983, forming a major rapid. The hydraulics of Crystal Creek rapid are described, and an analysis is presented to support the hypothesis that...
Comparison of daily and weekly precipitation sampling efficiencies using automatic collectors
L.J. Schroder, R.A. Linthurst, J.E. Ellson, S.F. Vozzo
1985, Water, Air, & Soil Pollution (24) 177-187
Precipitation samples were collected for approximately 90 daily and 50 weekly sampling periods at Finley Farm, near Raleigh, North Carolina from August 1981 through October 1982. Ten wet-deposition samplers (AEROCHEM METRICS MODEL 301) were used; 4 samplers were operated for daily sampling, and 6 samplers were operated for weekly-sampling periods....
ROLE OF X-RAY FLUORESCENCE IN A MODERN GEOCHEMICAL LABORATORY.
Joseph E. Taggart
1985, Conference Paper, Advances in X-Ray Analysis
Because modern geochemical laboratories can seldom have all new analytical equipment, it is clear that priorities must be assigned and choices made when selecting each new instrument. X-ray fluorescence (XRF) spectroscopy has come to play a vital role in this environment largely because it is a dependable, multielement, rapid method...
Quaternary sedimentation in Shelikof Strait, Alaska
Monty A. Hampton
1985, Marine Geology (62) 213-253
Shelikof Strait, a nearly parallel-sided marine channel between the Kodiak Island group and the Alaska Peninsula, has experienced a succession of distinct sedimentary environments during Quaternary time. Pleistocene glaciers carved a deep basin into bedrock in the southwest part of the strait and a shallower platform surface with incised channels...
Assessment of long-term salinity changes in an irrigated stream-aquifer system
Leonard F. Konikow, Mark Person
1985, Water Resources Research (21) 1611-1624
Changes in salinity in groundwater and surface water in the Arkansas River valley of southeastern Colorado are primarily related to irrigation practices. A solute transport model was applied to an 11-mile reach of the valley to compute salinity changes in response to spatially and temporally varying stresses. The model was...
Forecast model for moderate earthquakes near Parkfield, California
William D. Stuart, Ralph J. Archuleta, Allan Goddard Lindh
1985, Journal of Geophysical Research Solid Earth (90) 592-604
Earthquake instability models have possible application to earthquake forecasting because the models simulate both preseismic and coseismic changes of fault slip and ground deformation. In the forecast procedure proposed here, repeated measurements of preseismic fault slip and ground deformation constrain the values of model parameters. The early part of the...
U. S. G. S. MODULAR GROUND-WATER FLOW MODEL: DESIGNED TO BE UNDERSTOOD AND ADAPTED.
Michael G. McDonald, Arlen W. Harbaugh
1985, Conference Paper
The paper discusses a carefully designed model program and its complementary complete description of all of the physical and mathematical concepts used in the model. The model program consists of a series of independent subroutines called modules. Modules are grouped by hydrologic function into 'packages. ' A report describing the...
Paleomagnetism and geology of Eocene volcanic rocks of southwest Washington, implications for mechanisms of tectonic rotation
Ray E. Wells, Robert S. Coe
1985, Journal of Geophysical Research (90) 1925-1947
Paleomagnetic and geologic investigations in Eocene volcanic rocks of the southwest Washington Coast Range demonstrate a close relationship between tectonic rotations and the local structural geology. The allochthonous middle Eocene submarine basalt basement of the Crescent Formation consists of...
ANALYZING NUMERICAL ERRORS IN DOMAIN HEAT TRANSPORT MODELS USING THE CVBEM.
T. V. Hromadka II
Chung Jin S.Lunardini Virgil J.Chakrabarti S.K.Wang Y.S.Sodhi D.S.Karal K., editor(s)
1985, Conference Paper, Proceedings of the International Offshore Mechanics and Arctic Engineering Symposium
Besides providing an exact solution for steady-state heat conduction processes (Laplace Poisson equations), the CVBEM (complex variable boundary element method) can be used for the numerical error analysis of domain model solutions. For problems where soil water phase change latent heat effects dominate the thermal regime, heat transport can be...
GEOLOGIC PROCESSES AFFECTING THE QUALITY OF THE UPPER FREEPORT COAL BED, WEST-CENTRAL PENNSYLVANIA.
R.W. Stanton, C. B. Cecil, B.S. Pierce, L.F. Ruppert, F.T. Dulong
1985, Conference Paper
The number or types of origins of the components of a coal bed cannot be determined from its bulk composition. Minerals such as quartz, calcite, and pyrite as well as macerals such as vitrinite can originate from a variety of processes that result from different depositional conditions. The Upper Freeport...
Origin and evolution of the alkalic ultramafic rocks in the Coyote Peak diatreme, Humboldt County, California
J. W. Morgan, G.K. Czamanske, Wandless A. Gregory
1985, Geochimica et Cosmochimica Acta (49) 749-759
Instrumental-neutron-activation analyses are reported for two uncontaminated rocks, a phlogopite-rich clot, and two contaminated rocks from the Coyote Peak diatreme, northwestern California. These data, combined with Nd, Sr, and Pb isotopic evidence, have been modeled to a multi-stage evolution for the...
EARTHQUAKE HAZARDS IN THE OFFSHORE ENVIRONMENT.
Robert A. Page, Peter W. Basham
1985, Ocean science and engineering (10) 195-352
This report discusses earthquake effects and potential hazards in the marine environment, describes and illustrates methods for the evaluation of earthquake hazards, and briefly reviews strategies for mitigating hazards. The report is broadly directed toward engineers, scientists, and others engaged in developing offshore resources. The continental shelves have become a...
Three-dimensional trend mapping from wire-line logs
J.H. Doveton, Z. Ke-an
1985, Journal of the International Association for Mathematical Geology (17) 485
Mapping of lithofacies and porosities of stratigraphic units is complicated because these properties vary in three dimensions. The method of moments was proposed by Krumbein and Libby (1957) as a technique to aid in resolving this problem. Moments are easily computed from wireline logs and are simple statistics which summarize...
Well bore breakouts and in situ stress
Mark D. Zoback, Daniel Moos, Larry Mastin, Roger N. Anderson
1985, Journal of Geophysical Research (90) 5523-5530
The detailed cross-sectional shape of stress induced well bore breakouts has been studied using specially processed ultrasonic borehole televiewer data. Breakout shapes are shown for a variety of rock types and introduce a simple elastic failure model which explains many features of the observations. Both the observations and calculations indicate...
Geometric accuracy of Landsat-4 and Landsat-5 Thematic Mapper images.
W.T. Borgeson, R. M. Batson, H. H. Kieffer
1985, Photogrammetric Engineering and Remote Sensing (51) 1893-1898
The geometric accuracy of the Landsat Thematic Mappers was assessed by a linear least-square comparison of the positions of conspicuous ground features in digital images with their geographic locations as determined from 1:24 000-scale maps. For a Landsat-5 image, the single-dimension standard deviations of the standard digital product, and of...
Mallard recruitment in the agricultural environment of North Dakota
L.M. Cowardin, D.S. Gilmer, Charles W. Shaiffer
1985, Wildlife Monographs (92) 3-37
Recruitment of a mallard (Anas platyrhynchos) population was assessed on a 10,041-km2 study area in central North Dakota during 1977-80. We equipped 338 hens with radio transmitters and monitored them during the breeding season. Two hundred thirty-five of these hens furnished data reported here. Habitat use, nest site selection, fate...
Germanium geochemistry and mineralogy
L.R. Bernstein
1985, Geochimica et Cosmochimica Acta (49) 2409-2422
Germanium is enriched in the following geologic environments:1.(1) iron meteorites and terrestrial iron-nickel;2.(2) sulfide ore deposits, particularly those hosted by sedimentary rocks;3.(3) iron oxide deposits;4.(4) oxidized zones of Ge-bearing sulfide deposits;5.(5) pegmatites, greisens, and skarns; and6.(6) coal...
Franciscan complex calera limestones: Accreted remnants of farallon plate oceanic plateaus
J.A. Tarduno, M. McWilliams, M.G. Debiche, W.V. Sliter, M.C. Blake
1985, Nature (317) 345-347
The Calera Limestone, part of the Franciscan Complex of northern California, may have formed in a palaeoenvironment similar to Hess and Shatsky Rises of the present north-west Pacific1. We report here new palaeomagnetic results, palaeontological data and recent plate-motion models that reinforce this assertion. The Calera Limestone may have formed...
Modeling the rate-controlled sorption of hexavalent chromium
D.B. Grove, Kenneth G. Stollenwerk
1985, Water Resources Research (21) 1703-1709
Sorption of chromium VI on the iron-oxide- and hydroxide-coated surface of alluvial material was numerically simulated with rate-controlled reactions. Reaction kinetics and diffusional processes, in the form of film, pore, and particle diffusion, were simulated and compared with experimental results. The use of empirically calculated rate coefficients for diffusion through...
Spatial analysis of extension fracture systems: A process modeling approach
C.C. Ferguson
1985, Journal of the International Association for Mathematical Geology (17) 403-425
Little consensus exists on how best to analyze natural fracture spacings and their sequences. Field measurements and analyses published in geotechnical literature imply fracture processes radically different from those assumed by theoretical structural geologists. The approach adopted in this paper recognizes that disruption of rock layers by layer-parallel extension results...
Carboniferous paleogeographic, phytogeographic, and paleoclimatic reconstructions
D.B. Rowley, A. Raymond, Judith T. Parrish, A.L. Lottes, C.R. Scotese, A.M. Ziegler
1985, International Journal of Coal Geology (5) 7-42
Two revised paleogeographic reconstructions of the Visean and Westphalian C-D stages are presented based on recent paleomagnetic, phytogeographic, stratigraphic, and tectonic data. These data change the positions of some continental blocks, and allow the definition of several new ones. The most...
