Continued studies on opiods and hibernation: Does the polar bear (Ursus maritimus) hibernate?
David S. Bruce, Nancy K. Darling, Katheleen J. Seeland, Peter R. Oeltgen, Sita P. Nilekani, Steven C. Amstrup
Andre Malan, Bernard Canguilhem, editor(s)
1989, Conference Paper, Proceedings of the second international symposium on living in the cold (Colloque Inserm volume 193)
No abstract available....
Potentiometric surface of the lower Cape Fear aquifer in the central coastal plain of North Carolina, December 1986
M. D. Winner Jr., William L. Lyke, Allen R. Brockman
1989, Water-Resources Investigations Report 87-4234
Water level measurements were made in four wells open to the lower Cape Fear aquifer at the end of 1986 to determine the configuration of its potentiometric surface over an area of approximately 4,100 sq mi. Because of the scarcity of data, five earlier measurements were also used to help...
Uranium-series nuclides in the Golden fault, Colorado, U.S.A.: Dating latest fault displacement and measuring recent uptake of radionuclides by fault-zone materials
Barney J. Szabo, J.N. Rosholt
1989, Applied Geochemistry (4) 177-182
Concentrations and isotopic ratios of U, Th and Ra were measured in a fault zone near Golden, Colorado where major displacement occurred between about 190 and 615 ka. Faulting created new surfaces for leaching and provided the pathways for U-rich ground...
Pockmarks in the floor of Penobscot Bay, Maine
Kathryn M. Scanlon, Harley J. Knebel
1989, Geo-Marine Letters (9) 53-58
Hundreds of depressions (pockmarks) were found within a 40 square kilometer area of the sea floor near the head of Penobscot Bay, Maine. These roughly circular depressions range in diameter from 10 to 300 meters and extend as much as 30 meters below the surrounding sea floor. The pockmarks have...
Trace metal associations in the water column of South San Francisco Bay, California
J.S. Kuwabara, Cecily C.Y. Chang, J. E. Cloern, T. L. Fries, J.A. Davis, S. N. Luoma
1989, Estuarine, Coastal and Shelf Science (28) 307-325
Spatial distributions of copper (Cu), zinc (Zn) and cadmium (Cd) were followed along a longitudinal gradient of dissolved organic carbon (DOC) in South San Francisco Bay (herein referred to as the South Bay). Dissolved Cu, Zn and Cd concentrations ranged from 24 to...
Convergent radial dispersion: A Laplace transform solution for aquifer tracer testing
Allen F. Moench
1989, Water Resources Research (25) 439-447
A Laplace transform solution was obtained for the injection of a tracer in a well situated in a homogeneous aquifer where steady, horizontal, radially convergent flow has been established due to pumping at a second well. The standard advection-dispersion equation for mass transfer was used as the controlling equation. For...
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,...
An approach to the field study of hydraulic gradients in variable-salinity ground water
J.J. Hickey
1989, Ground Water (27) 531-539
A field study approach is proposed for reliably estimating hydraulic gradients in subregions within a region of variable-salinity ground water. It is based upon Hubbert's concept about the kind of density distributions that are required for ground water to have a potential. The approach consists of dividing a region of...
Water content dependence of trapped air in two soils
David A. Stonestrom, Jacob Rubin
1989, Water Resources Research (25) 1947-1958
An improved air pycnometer method was used to examine the water content dependence of trapped-air volumes in two repacked, nonswelling soils. Trapped-air volumes were determined at a series of hydrostatic equilibrium stages which were attained during water pressure-controlled wetting and drying cycles over a range of 0 to −10 kPa...
Removing volatile contaminants from the unsaturated zone by inducing advective air-phase transport
A. L. Baehr, G.E. Hoag, M.C. Marley
1989, Journal of Contaminant Hydrology (4) 1-26
Organic liquids inadvertently spilled and then distributed in the unsaturated zone can pose a long-term threat to ground water. Many of these substances have significant volatility, and thereby establish a premise for contaminant removal from the unsaturated zone by inducing advective air-phase transport...
Extracting spectral contrast in Landsat Thematic Mapper image data using selective principal component analysis
P.S. Chavez Jr., Andy Y. Kwarteng
1989, Photogrammetric Engineering and Remote Sensing (55) 339-348
A challenge encountered with Landsat Thematic Mapper (TM) data, which includes data from size reflective spectral bands, is displaying as much information as possible in a three-image set for color compositing or digital analysis. Principal component analysis (PCA) applied to the six TM bands simultaneously is often used to address...
Enrichment of trace elements in garnet amphibolites from a paleo-subduction zone: Catalina Schist, southern California
Sorena S. Sorensen, J. N. Grossman
1989, Geochimica et Cosmochimica Acta (53) 3155-3177
The abundance, P-T stability, solubility, and element-partitioning behavior of minerals such as rutile, garnet, sphene, apatite, zircon, zoisite, and allanite are critical variables in models for mass transfer from the slab to the mantle wedge in deep regions of subduction zones. The influence of these minerals on the composition of subduction-related magmas...
Structures associated with strike-slip faults that bound landslide elements
R. W. Fleming, A. M. Johnson
1989, Engineering Geology (27) 39-114
Large landslides are bounded on their flanks and on elements within the landslides by structures analogous to strike-slip faults. We observed the formation of thwse strike-slip faults and associated structures at two large landslides in central Utah during 1983-1985. The strike-slip faults in landslides are nearly vertical but locally may...
Recharge of the early atmosphere of Mars by impact-induced release of CO2
Michael H. Carr
1989, Icarus (79) 311-327
Channels on the Martian surface suggest that Mars had an early, relatively thick atmosphere. If the atmosphere was thick enough for water to be stable at the surface, CO2 in the atmosphere would have been fixed as carbonates on a relatively short time scale, previously estimated to be 1 bar...
Organic geochemistry and brine composition in Great Salt, Mono, and Walker Lakes
Joseph L. Domagalski, W. H. Orem, H.P. Eugster
1989, Geochimica et Cosmochimica Acta (53) 2857-2872
Samples of Recent sediments, representing up to 1000 years of accumulation, were collected from three closed basin lakes (Mono Lake, CA, Walker Lake, NV, and Great Salt Lake, UT) to assess the effects of brine composition on the accumulation of total organic...
Heat capacities and entropies from 8 to 1000 K of langbeinite (K2Mg2(SO4)3), anhydrite (CaSO4) and of gypsum (CaSO4·2H2O)
Richard A. Robie, Susan Russell-Robinson, Bruce S. Hemingway
1989, Thermochimica Acta (139) 67-81
Heat capacities of K2Mg2(SO4)3 (langbeinite) and CaSO4 (anhydrite) were measured from approximately 8 to 1000 K by combined adiabatic shield calorimetry (8-365 K) and differential scanning calorimetry (350-1000 K). Heat capacities were also measured on natural crystals of gypsum (CaSO4 · 2H2O) between 8.1 and 323.5 K. The molar entropies at 298.15...
West Virginia Geological Survey's role in siting fluidized bed combustion facilities
C.J. Smith, Hobart M. King, K. C. Ashton, D.S. Kirstein, G.H. McColloch
1989, Conference Paper
A project is presented which demonstrates the role of geology in planning and siting a fluidized bed combustion facility. Whenever a project includes natural resource utilization, cooperation between geologists and design engineers will provide an input that could and should save costs, similar to the one stated in our initial...
[Book review] Middle American Herpetology, by Jaime Villa, Larry David Wilson, and Jerry D. Johnson
N.J. Scott Jr.
1989, Copeia (1989) 802-804
Review of: Middle American Herpetology: a bibliographic checklist. By Jaime Villa, Larry David Wilson and Jerry D. Johnson. 1988. University of Missouri Press, Columbia, Missouri 65211. 132 p., 16 color plates, $35.00 (hardcover)....
Estimating urban flood-frequency characteristics
M.E. Jennings, J.B. Atkins, E. J. Inman
1989, Conference Paper
Methods in use by the U.S. Geological Survey to estimate flood-frequency characteristics for urban watersheds are compared with estimates based on the Soil Conservation Service TR-55 model. Data from four small urban watersheds in Georgia are used in the flood-peak and hydrograph comparisons....
Sedimentology and paleontology of the Upper Triassic Chinle Formation, Bedrock, Colorado
R. F. Dubiel, S.C. Good, J.M. Parrish
1989, Mountain Geologist (26) 113-126
Describes a reddish-brown sandstone, siltstone, and mudstone, with minor amounts of siliciclastic-, carbonate-, and chert-pebble conglomerate, and green mudstone. Deposition occurred in continental environments. Lithofacies, trace fossils, and invertebrate and vertebrate fossils indicate that the Late Triassic climate was tropical monsoonal until the close of Chinle deposition when drier seasons...
Interrelationships among hydrologic-budget components of a northern Wisconsin seepage lake and implications for acid-deposition modeling
Dennis A. Wentz, William J. Rose
1989, Archives of Environmental Contamination and Toxicology (18) 147-155
Components of the hydrologic budget for a northern Wisconsin seepage lake were analyzed by applying correlation and regression techniques to monthly data. Analyses for the 1981–83 water years revealed a statistically significant, direct relationship between storage change and precipitation-evaporation balance. Ground-water outflow was negatively correlated with ground-water inflow, and this...
Dynamic rupture modeling with laboratory-derived constitutive relations
P. G. Okubo
1989, Journal of Geophysical Research Solid Earth (94) 12321-12335
A laboratory-derived state variable friction constitutive relation is used in the numerical simulation of the dynamic growth of an in-plane or mode II shear crack. According to this formulation, originally presented by J. H. Dieterich, frictional resistance varies with the logarithm of the slip rate and with the logarithm of...
100 years of sedimentation study by the USGS
G. Douglas Glysson
1989, Conference Paper
On January 15, 1889, the U.S. Geological Survey began collecting sediment data on the Rio Grande at Embudo, New Mexico. During the past 100 years the U.S. Geological Survey's Water Resources Division (WRD) has collected daily sediment data at more than 1,200 sites. Projects have addressed the problems associated with...
Solid-state 13C nuclear magnetic resonance studies of coalified gymnosperm xylem tissue from Australian brown coals
Patrick G. Hatcher, Harry E. Lerch, Anne L. Bates, T.V. Verheyen
1989, Organic Geochemistry (14) 145-155
We report here on the use of solid-state 13C nuclear magnetic resonance (NMR) spectroscopy to contrast the average chemical composition of modern degraded gymnosperm woods with fossil gymnosperm woods from Australian brown coals (Miocene). We first established the quantitative nature of the NMR techniques for these samples so that the conventional...
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...
