Influence of long term climate change on net infiltration at Yucca Mountain, Nevada
Alan I. Flint, Lorraine E. Flint, Joseph A. Hevesi
1993, Conference Paper, High Level Radioactive Waste Management
Net infiltration and recharge at Yucca Mountain, Nevada, a potential site for a high level nuclear waste repository, are determined both by the rock properties and past and future changes in climate. A 1-dimensional model was constructed to represent a borehole being drilled through the unsaturated zone. The rock properties...
Plans for a sensitivity analysis of bridge-scour computations
David D. Dunn, Peter N. Smith
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Plans for an analysis of the sensitivity of Level 2 bridge-scour computations are described. Cross-section data from 15 bridge sites in Texas are modified to reflect four levels of field effort ranging from no field surveys to complete surveys. Data from United States Geological Survey (USGS) topographic maps will be...
Tectonic characterization of a potential high-level nuclear waste repository at Yucca Mountain, Nevada
John W. Whitney, Dennis W. O’Leary
1993, Conference Paper, Dynamic Analysis and Design Considerations for High-Level Nuclear Waste Repositories
Tectonic characterization of a potential high-level nuclear waste repository at Yucca Mountain, Nevada, is needed to assess seismic and possible volcanic hazards that could affect the site during the preclosure (next 100 years) and the behavior of the hydrologic system during the postclosure (the following 10,000 years) periods. Tectonic characterization...
The Geysers-Clear Lake area, California: Thermal waters, mineralization, volcanism, and geothermal potential
J.M. Donnelly-Nolan, M.G. Burns, F.E. Goff, E.K. Peters, J. M. Thompson
1993, Economic Geology (88) 301-316
Manifestations of a major thermal anomaly in the Geysers-Clear Lake area of northern California include the late Pliocene to Holocene Clear Lake Volcanics, The Geysers geothermal field, abundant thermal springs, and epithermal mercury and gold mineralization. The epithermal mineralization and thermal springs typically occur along high-angle faults within the broad...
Oxygen buffering of Kilauea volcanic gases and the oxygen fugacity of Kilauea basalt
T.M. Gerlach
1993, Geochimica et Cosmochimica Acta (57) 795-814
Volcanic gases collected during episode 1 of the Puu Oo eruption along the east rift zone of Kilauea Volcano, Hawaii, have uniform C-O-H-S-Cl-F compositions that are sharply depleted in CO2. The CO2-poor gases are typical of Type II volcanic gases (gerlach and Graeber, 1985) and were emitted from evolved magma...
New methods to characterize site amplification
Erdal Safak
1993, Conference Paper, Structural Engineering in Natural Hazards Mitigation
Methods alternative to spectral ratios are introduced to characterize site amplification. The methods are developed by using a range of models, from the simple constant amplification model to the time-varying filter model. Examples are given for each model by using a pair of rock- and soil-site recordings from the Loma...
Reduction of uranium by cytochrome c3 of Desulfovibrio vulgaris
Derek R. Lovley, P.K. Widman, J.C. Woodward, Elizabeth J.P. Phillips
1993, Applied and Environmental Microbiology (59) 3572-3576
The mechanism for U(VI) reduction by Desulfovibrio vulgaris (Hildenborough) was investigated. The H2-dependent U(VI) reductase activity in the soluble fraction of the cells was lost when the soluble fraction was passed over a cationic exchange column which extracted cytochrome c3. Addition of cytochrome c3 back to the soluble fraction that...
Effects of climate change on drought risks in the Apalachicola, Chattahoochee, and Flint River basin
Gary D. Tasker
1993, Conference Paper, Proceedings of the Symposium on Engineering Hydrology
Possible effects of climate change on the Apalachicola-Chattahoochee-Flint (ACF) River basin is simulated with a computer model. Model inputs are monthly temperature and precipitation that simulate several possible climate change scenarios. Preliminary results for climate scenarios based on output for three popular general circulation models indicate that lower flows will...
Breakpoint-forced and bound long waves in the nearshore: A model comparison
Jeffrey H. List
Anon, editor(s)
1993, Conference Paper, Proceedings of the Coastal Engineering Conference
A finite-difference model is used to compare long wave amplitudes arising from two-group forced generation mechanisms in the nearshore: long waves generated at a time-varying breakpoint and the shallow-water extension of the bound long wave. Plane beach results demonstrate that the strong frequency selection in the outgoing wave predicted by...
The hydrogeology of Kilauea volcano
S. E. Ingebritsen, M. A. Scholl
1993, Geothermics (22) 255-270
The hydrogeology of Kilauea volcano and adjacent areas has been studied since the turn of this century. However, most studies to date have focused on the relatively shallow, low-salinity parts of the ground-water system, and the deeper hydrothermal system remains poorly understood. The rift zones of adjacent Mauna Loa volcano...
Seismic responses of two adjacent buildings. I. Data and analyses
Mehmet Çelebi
1993, Journal of Structural Engineering (119) 2461-2476
In this two-part paper, responses of two, adjacent, seven-story buildings in Norwalk, California, to the Whittier-Narrows, Calif, earthquake of Oct. 1, 1987 are studied. Building A, instrumented according to code recommendations, and building B, extensively instrumented, are offset by 16.3 m from one another. The data set includes motions from...
Beach profile modification and sediment transport by ice: an overlooked process on Lake Michigan
P. W. Barnes, E. W. Kempema, E. Reimnitz, M. McCormick, W. S. Weber, E.C. Hayden
1993, Journal of Coastal Research (9) 65-86
Coastal lake ice includes a belt of mobile crash and slush ice and a stable nearshore-ice complex (NIC). Sediment concentrations indicate that the NIC and the belt of brash and slush contains 180 to 280 t (113 to 175m3) of sand per kilometer of coast. This static sediment load is...
Structural analysis of sheath folds in the Sylacauga Marble Group, Talladega slate belt, southern Appalachians
J.W. Mies
1993, Journal of Structural Geology (15) 983-993
Remnant blocks of marble from the Moretti-Harrah dimension-stone quarry provide excellent exposure of meter-scale sheath folds. Tubular structures with elliptical cross-sections (4 ≤Ryz ≤ 5) are the most common expression of the folds. The tubes are elongate subparallel to stretching lineation and...
Prediction of hydrocarbons in sedimentary basins
J.E. Harff, J.C. Davis, W. Eiserbeck
1993, Mathematical Geology (25) 925-936
To estimate the undiscovered hydrocarbon potential of sedimentary basins, quantitative play assessments specific for each location in a region may be obtained using geostatistical methods combined with the theory of classification of geological objects, a methodology referred to as regionalization. The technique relies on process modeling and measured borehole data...
Ikaite precipitation by mixing of shoreline springs and lake water, Mono Lake, California, USA
J. L. Bischoff, S. Stine, R.J. Rosenbauer, J.A. Fitzpatrick, Thomas W. Stafford Jr.
1993, Geochimica et Cosmochimica Acta (57) 3855-3865
Metastable ikaite (CaCO3·6H2O) forms abundantly during winter months along the south shoreline of Mono Lake where shoreline springs mix with lake water. Ikaite precipitates because of its decreased solubility at low temperature and because of orthophosphate-ion inhibition of calcite and aragonite. During the spring some of the ikaite is transformed...
Prediction by regression and intrarange data scatter in surface-process studies
T.J. Toy, W. R. Osterkamp, K.G. Renard
1993, Environmental Geology (22) 121-128
Modeling is a major component of contemporary earth science, and regression analysis occupies a central position in the parameterization, calibration, and validation of geomorphic and hydrologic models. Although this methodology can be used in many ways, we are primarily concerned with the prediction of values for one variable from another...
Evaluation of subsurface exploration, sampling, and water-quality-analysis methods at an abandoned wood-preserving plant site at Jackson, Tennessee
W. S. Parks, J. K. Carmichael, J. E. Mirecki
1993, Water-Resources Investigations Report 93-4108
Direct Push Technology (DPT) and a modified-auger method of sampling were used at an abandoned wood-preserving plant site at Jackson, Tennessee, to collect lithologic data and ground-water samples in an area known to be affected by a subsurface creosote plume. The groundwater samples were analyzed using (1) gas chromatography with...
Digital simulation of a saline groundwater plume affected by partially penetrating canals
M. L. Merritt
1993, Book chapter, Hydrogeologic investigation, evaluation, and ground water modeling
No abstract available...
Application of borehole geophysics in defining the wellhead protection area for a fractured crystalline bedrock aquifer
J.H. Vernon, F.L. Paillet, W.H. Pedler, W.J. Griswold
1993, Log Analyst (34) 41-57
Wellbore geophysical techniques were used to characterize fractures and flow in a bedrock aquifer at a site near Blackwater Brook in Dover, New Hampshire. The primary focus ofthis study was the development of a model to assist in evaluating the area surrounding a planned water supply well where contaminants introduced...
Pharmacokinetics, tissue distribution, and metabolism of nitrofurantoin in the channel catfish (Ictalurus punctatus)
Guy R. Stehly, S. M. Plakas
1993, Aquaculture (113) 1-10
The pharmacokinetics, tissue distribution, and metabolism of the drug nitrofurantoin were examined in the channel catfish (Ictalurus punctatus) after intravascular or oral dosing. Mean plasma concentrations of nitrofurantoin after intravascular administration at 1 and 10 mg kg−1 of body weight were best fit to two- and three-compartment pharmacokinetic models, respectively. Nitrofurantoin...
An earth remote sensing satellite- 1 Synthetic Aperture Radar Mosaic of the Tanana River Basin in Alaska
Charles E. Wivell, Coert Olmsted, Daniel R. Steinwand, Christopher Taylor
1993, Photogrammetric Engineering and Remote Sensing (59) 527-528
Because the pixel location in a line of Synthetic Aperture Radar (SAR) image data is directly related to the distance the pixel is from the radar, terrain elevations cause large displacement errors in the geo-referenced location of the pixel. This is especially true for radar systems with small angles between...
Potential problem with mean dimensionless hydrographs at ungaged sites
Kenneth L. Wahl, James G. Rankl
1993, Conference Paper, Proceedings of the Symposium on Engineering Hydrology
A flood hydrograph for an ungaged stream site can be estimated from a mean dimensionless hydrograph and estimates of instantaneous peak discharge (Q) and total storm runoff volume (V). However, the time base of the resulting flood hydrograph can be inversely related to the magnitude of the peak discharge if...
Geyser's magma chamber, California: constraints from gravity data, density measurements, and well information
Richard J. Blakely, W. D. Stanley
Anon, editor(s)
1993, Conference Paper, Transactions - Geothermal Resources Council
A new crustal model based on isostatic residual gravity, geologic mapping, well information, and density measurements shows that the high-gradient parts of the residual gravity anomaly can be explained in terms of lithologic variations within the upper 7 km of the crust, consistent with the upper-crustal framework of the area....
Interaction between native and nonnative fish of the upper Muddy River, Nevada
G. Gary Scoppettone
1993, Transactions of the American Fisheries Society (122) 599-608
I investigated interactions between native and nonnative fishes in the upper Muddy River system to add insight into (1) the mechanism causing the decline of the Moapa dace Moapa coriacea after the introduction of the shortfin molly Poecilia mexicana, (2) the reason Moapa White River springfish Crenichthys bailevi moapaewere less...
Sampling and major element chemistry of the recent (A.D. 1631-1944) Vesuvius activity
H. E. Belkin, C.R.J. Kilburn, B. de Vivo
1993, Journal of Volcanology and Geothermal Research (58) 273-290
Detailed sampling of the Vesuvius lavas erupted in the period A.D. 1631-1944 provides a suite of samples for comprehensive chemical analyses and related studies. Major elements (Si, Ti, Al, Fetotal, Mn, Mg, Ca, Na, K and P), volatile species (Cl, F, S, H2O+, H2O- and CO2), and ferrous iron (Fe2+)...
