Acute gastric dilatation and volvulus in a free-living polar bear
Steven C. Amstrup, Carol A. Nielsen
1989, Journal of Wildlife Diseases (25) 601-604
A large, adult male polar bear (Ursus maritimus) was found dead on a barrier island north of Prudhoe Bay, Alaska (USA), in June 1987. There were no external signs of trauma. A twisted distended stomach, distinctive parenchymal and fascial congestion, and significant difficulty in repositioning the...
Petrologic evolution of divergent peralkaline magmas from the Silent Canyon caldera complex, southwestern Nevada volcanic field
D.A. Sawyer, K. A. Sargent
1989, Journal of Geophysical Research Solid Earth (94) 6021-6040
The Silent Canyon volcanic center consists of a buried Miocene peralkaline caldera complex and outlying peralkaline lava domes. Its location has been corroborated by geophysical data and more than 50 drill holes. Two widespread ash flow sheets, the Tub Spring and overlying Grouse Canyon members of the Miocene Belted Range...
NEIC - the National Earthquake Information Center
R.P. Masse, R.E. Needham
1989, Earthquakes & Volcanoes (USGS) (21) 4-44
The National Earthquake Information Center of the US Geological Survey has three main missions. First, the NEIC determines as rapidly and as accurately as possible, the location and size of all destructive earthquakes that occur worldwide. Second, the NEIC collects and provides to scientists and to the public an extensive...
Availability of a library of infrared (2.1-25.0 μm) mineral spectra
John W. Salisbury, Louis S. Walter, Norma Vergo
1989, American Mineralogist (74) 938-939
All previously published libraries of infrared mineral spectra are in the form of transmittance. Reflectance spectra are, however, more useful for remote sensing and some potential laboratory applications, such as the use of an infrared microscope for mineral identification on polished sections. This note points out that construction of a new library of...
Regionalization of flood characteristics
W.O. Thomas Jr., M. N. Landers
1989, Conference Paper
Regionalization procedures are used to transfer flood characteristics from gaged to ungaged locations. These procedures are an extension of the gaging network that allows planners and designers to make estimates of flood frequency at ungaged sites of interest. The U.S. Geological Survey has a long time involvement in the development...
Speciation and equilibrium relations of soluble aluminum in a headwater stream at base flow and during rain events
Douglas A. Burns
1989, Water Resources Research (25) 1653-1665
In a small watershed in the Shenandoah National Park, Virginia, the short-term dynamics of soluble aluminum in stream water sampled during rain events differed significantly from stream water sampled during base flow conditions. Three fractions of dissolved aluminum were measured. The inorganic monomeric fraction made up approximately two thirds of...
Significance of new potassium-argon ages from the Goldens Ranch and Moroni Formations, Sanpete-Sevier Valley area, central Utah
I. J. Witkind, R. F. Marvin
1989, Geological Society of America Bulletin (101) 534-548
Exposures of volcanic-sedimentary strata are widely distributed within central Utah. We believe that these volcanic and stratified sedimentary rocks, known by different formational names in different parts of this region, are, in fact, segments of one and the same suite of rocks that formed during the early and middle Tertiary.The...
Seismic reflection images of the crust of the northern part of the Chugach terrane, Alaska: Results of a survey for the Trans-Alaska Crustal Transect (TACT)
M. A. Fisher, T.M. Brocher, W. J. Nokleberg, George Plafker, G.L. Smith
1989, Journal of Geophysical Research Solid Earth (94) 4424-4440
Deep crustal seismic reflection data show strong reflections from the middle and lower crust of the convergent continental margin near the eastern end of the Aleutian trench. These data were collected across the Border Ranges fault system, a major suture zone that separates the Peninsular and Chugach tectonostratigraphic terranes. The...
Data-collection program for Pamlico River Estuary model calibration and validation
Jerad D. Bales
1989, Conference Paper
An investigation is being conducted to collect and interpret continuous records relating to the flow characteristics of the Pamlico River Estuary, North Carolina, and to calibrate and validate a numerical model of estuarine hydrodynamics. The study reach is 50 kilometers long and ranges in width from 330 meters at the...
Spectral analysis and filtering techniques in digital spatial data processing
Jeng-Jong Pan
1989, Photogrammetric Engineering and Remote Sensing (55) 1203-1207
A filter toolbox has been developed at the EROS Data Center, US Geological Survey, for retrieving or removing specified frequency information from two-dimensional digital spatial data. This filter toolbox provides capabilities to compute the power spectrum of a given data and to design various filters in the frequency domain. Three...
Acceleration spectra for subduction zone earthquakes
J. Boatwright, G. L. Choy
1989, Journal of Geophysical Research Solid Earth (94) 15541-15553
We estimate the source spectra of shallow earthquakes from digital recordings of teleseismic P wave groups, that is, P + pP + sP, by making frequency dependent corrections for the attenuation and for the interference of the free surface. The correction for the interference of the free surface assumes that the earthquake radiates energy from a range...
Water balance at a low-level radioactive-waste disposal site
R. W. Healy, J. R. Gray, G. M. De Vries, P. C. Mills
1989, Water Resources Bulletin (25) 381-390
The water balance at a low-level radioactive-waste disposal site in northwestern Illinois was studied from July 1982 through June 1984. Continuous data collection allowed estimates to be made for each component of the water-balance equation independent of other components. The average annual precipitation was 948 millimeters. Average annual evapotranspiration was...
A high-density remote reference magnetic variation profile in the Pacific northwest of North America
J.F. Hermance, S. Lusi, W. Slocum, G.A. Neumann, A.W. Green Jr.
1989, Physics of the Earth and Planetary Interiors (53) 305-319
During the summer of 1985, as part of the EMSLAB Project, Brown University conducted a detailed magnetic variation study of the Oregon Coast Range and Cascades volcanic system along an E-W profile in central Oregon. Comprised of a sequence of 75 remote reference magnetic variation (MV) stations spaced 3-4 km...
A modular water shed modeling and data management system
G.H. Leavesley, L.G. Stannard
1989, Conference Paper, United States/People's Republic of China flood forecasting sympo sium/workshop proceedings
No abstract available...
Potentiometric surface of the Peedee aquifer in the central coastal plain of North Carolina, December 1986
Allen R. Brockman, William L. Lyke, M. D. Winner Jr.
1989, Water-Resources Investigations Report 87-4236
Water level measurements were made in 37 wells open to the Peedee aquifer at the end of 1986 to determine the configuration of its potentiometric surface over an area of about 4,100 square miles in the central Coastal Plain of North Carolina. The potentiometric surface of the Peedee slopes southeastward...
Arsenic in ground-water under oxidizing conditions, south-west United States
F. N. Robertson
1989, Environmental Geochemistry and Health (11) 171-185
Concentrations of dissolved arsenic in ground-water in alluvial basins of Arizona commonly exceed 50 μg L−1 and reach values as large as 1,300 μg L−1. Arsenic speciation analyses show that arsenic occurs in the fully oxidized state of plus 5 (As+5), most likely in the form of...
Climate variability in an estuary: Effects of riverflow on San Francisco Bay
David H. Peterson, Daniel R. Cayan, John F. Festa, Frederic H. Nichols, Roy A. Walters, James V. Slack, Stephen E. Hager, Laurence E. Schemel
David H. Peterson, editor(s)
1989, Book chapter, Aspects of climate variability in the Pacific and the Western Americas
A simple conceptual model of estuarine variability in the context of climate forcing has been formulated using up to 65 years of estimated mean-monthly delta flow, the cumulative freshwater flow to San Francisco Bay from the Sacramento-San Joaquin River, and salinity observations near the mouth, head, mid-estuary, and coastal...
Classification of lung cancer patients and controls by chromatography of modified nucleosides in serum
John E. McEntire, Kenneth C. Kuo, Mark E. Smith, David L. Stalling, Jack W. Richens Jr., Robert W. Zumwalt, Charles W. Gehrke, Ben W. Papermaster
1989, Cancer Research (49) 1057-1062
A wide spectrum of modified nucleosides has been quantified by high-performance liquid chromatography in serum of 49 male lung cancer patients, 35 patients with other cancers, and 48 patients hospitalized for nonneoplastic diseases. Data for 29 modified nucleoside peaks were normalized to an internal standard and analyzed by discriminant analysis...
Field measurements of dry deposition to spruce foliage and petri dishes in the Black Forest, F.R.G.
J. B. Shanley
1989, Atmospheric Environment (23) 403-414
Dry deposition fluxes of Ca2+, Mg2+ , K+, Mn2+, Pb2+ and SO2−4 to spruce foliage and petri dishes were measured in two high-elevation sites ( > 900 m) in the southern Black Forest, F.R.G., during 12 periods (2–7 days, each) from mid-September to mid-November, 1983, In situ extraction of deposited material from small spruce branches...
Nest habitat use of Rio Grande wild turkeys
Joel A. Schmutz, Clait E. Braun, William F. Andelt
1989, The Wilson Bulletin (101) 591-598
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...
Spectroscopic evidence for organic diacid complexation with dissolved silica in aqueous systems—I. Oxalic acid
N.A. Marley, P. Bennett, D.R. Janecky, J.S. Gaffney
1989, Organic Geochemistry (14) 525-528
Increased solubility of quartz and mobilization in contaminated groundwater due to the complexation with dissolved organic acids has been recently proposed [Bennett and Siegel, Nature326, 684–686 (1987)]. Using laser Raman and Fourier transform infrared spectroscopies, we have examined mixed solutions of oxalic and silicic acids at near neutral pH in...
Three-dimensional records of surface displacement on the Superstition Hills fault zone associated with the earthquakes of 24 November 1987
R. V. Sharp, J.L. Saxton
1989, Bulletin of the Seismological Society of America (79) 376-389
Seven quadrilaterals, constructed at broadly distributed points on surface breaks within the Superstition Hills fault zone, were repeatedly remeasured after the pair of 24 November 1987 earthquakes to monitor the growing surface displacement. Changes in the dimensions of the quadrilaterals are recalculated to right-lateral and extensional components at millimeter resolution,...
Urban flood frequency and hydrograph analysis
Vernon B. Sauer
1989, Conference Paper, Hydraulic engineering: 3rd national conference: Papers
A set of seven-parameter regression equations was developed for estimating flood discharges at ungaged areas. The regression equations can be used to estimate urban flood discharges throughout the United States for recurrence intervals from 2 through 500 years. The average standard errors of regression range from 37 percent for the...
Response of selected binomial coefficients to varying degrees of matrix sparseness and to matrices with known data interrelationships
A.W. Archer, C.G. Maples
1989, Mathematical Geology (21) 741-753
Numerous departures from ideal relationships are revealed by Monte Carlo simulations of widely accepted binomial coefficients. For example, simulations incorporating varying levels of matrix sparseness (presence of zeros indicating lack of data) and computation of expected values reveal that not only are all common coefficients influenced by zero data, but...
Water transport in limestone by X-ray CAT scanning
Victor G. Mossoti, Louis M. Castanier
1989, Conference Paper
The transport of water through the interior of Salem limestone test briquettes can be dynamically monitored by computer aided tomography (commonly called CAT scanning in medical diagnostics). Most significantly, unless evaporation from a particular face of the briquette is accelerated by forced air flow (wind simulation), the distribution of water...
