A nonlinear model for analysis of slug-test data
C.D. McElwee, M.A. Zenner
1998, Water Resources Research (34) 55-66
While doing slug tests in high-permeability aquifers, we have consistently seen deviations from the expected response of linear theoretical models. Normalized curves do not coincide for various initial heads, as would be predicted by linear theories, and are shifted to larger times for higher initial heads. We have developed a...
Selection of forage-fish schools by Murrelets and Tufted Puffins in Prince William Sound, Alaska
William D. Ostrand, Kenneth O. Coyle, Gary S. Drew, John M. Maniscalco, David B. Irons
1998, The Condor (100) 286-297
We collected hydroacoustic and bird-observation data simultaneously along transects in three areas in Prince William Sound, Alaska, 21 July-11 August 1995. The probability of the association of fish schools with Marbled Murrelets (Brachyramphus marmoratus) and Tufted Puffins (Fratercula cirrhata) was determined through the use of resource selection functions based on...
Simulated effects of irrigation on salinity in the Arkansas River Valley in Colorado
K. Goff, M.E. Lewis, M.A. Person, Leonard F. Konikow
1998, Ground Water (36) 76-86
Agricultural irrigation has a substantial impact on water quantity and quality in the lower Arkansas River valley of southeastern Colorado. A two-dimensional flow and solute transport model was used to evaluate the potential effects of changes in irrigation on the quantity and quality of water in the alluvial aquifer and...
Heat capacity and thermodynamic properties for coesite and jadeite, reexamination of the quartz-coesite equilibrium boundary
B. S. Hemingway, S.R. Bohlen, W.B. Hankins, E.F. Westrum Jr., O.L. Kuskov
1998, American Mineralogist (83) 409-418
The heat capacities of synthetic coesite and jadeite were measured between about 15 and 850 K by adiabatic and differential scanning calorimetry. The experimental data were smoothed and estimates were made of heat capacities to 1800 K. The following equations represent our estimate of the heat capacities of coesite and...
Re-evaluation and extension of the scope of elements in US Geological Survey Standard Reference Water Samples
D.B. Peart, Ronald C. Antweiler, Howard E. Taylor, D.A. Roth, T.I. Brinton
1998, Analyst (123) 455-476
More than 100 US Geological Survey (USGS) Standard Reference Water Samples (SRWSs) were analyzed for numerous trace constituents, including Al, As, B, Ba, Be, Bi, Br, Cd, Cr, Co, Cu, I, Fe, Pb, Li, Mn, Mo, Ni, Rb, Sb, Se, Sr, Te, Tl, U, V, Zn and major elements (Ca,...
Survey of vesicular-arbuscular mycorrhizae in lettuce production in relation to management and soil factors
R. L. Miller, L.E. Jackson
1998, Journal of Agricultural Science (130) 173-182
The occurrence of vesicular-arbuscular mycorrhizae (VAM) root colonization and spore number in soil was assessed for 18 fields under intensive lettuce (Lactuca sativa L.) production in California during July and August of 1995. Data on management practices and soil characteristics were compiled for each field, and included a wide range...
AIRSLUG: A fortran program for the computation of type curves to estimate transmissivity and storativity from prematurely terminated air-pressurized slug tests
E.A. Greene, A.M. Shapiro
1998, Ground Water (36) 373-375
The Fortran code AIRSLUG can be used to generate the type curves needed to analyze the recovery data from prematurely terminated air-pressurized slug tests. These type curves, when used with a graphical software package, enable the engineer or scientist to analyze field tests to estimate transmissivity and storativity. Prematurely terminating...
Volcanism offshore of Vesuvius Volcano in Naples Bay
A. Milia, L. Mirabile, M.M. Torrente, J.J. Dvorak
1998, Bulletin of Volcanology (59) 404-413
High-resolution seismic reflection data are used to identify structural features in Naples Bay near Vesuvius Volcano. Several buried seismic units with reflection-free interiors are probably volcanic deposits erupted during and since the formation of the breached crater of Monte Somma Volcano, which preceded the growth of Vesuvius. The presumed undersea...
Windflow circulation patterns in a coastal dune blowout, south coast of Lake Michigan
G.S. Fraser, S.W. Bennett, G.A. Olyphant, N.J. Bauch, V. Ferguson, C.A. Gellasch, C.L. Millard, B. Mueller, P. J. O’Malley, J.N. Way, M.C. Woodfield
1998, Journal of Coastal Research (14) 451-460
The windflow patterns in a large active blowout in a coastal dune on the southern shore of Lake Michigan were intensively monitored during a two-day period when the predominant winds shifted from onshore (Day 1) to offshore (Day 2). The wind data were used in conjunction with mapped geomorphic features...
Flow modeling and permeability estimation using borehole flow logs in heterogeneous fractured formations
Frederick L. Paillet
1998, Water Resources Research (34) 997-1010
A numerical model of flow in the vicinity of a borehole is used to analyze flowmeter data obtained with high-resolution flowmeters. The model is designed to (1) precisely compute flow in a borehole, (2) approximate the effects of flow in surrounding aquifers on the measured borehole flow, (3) allow for...
Relationship between pumping-test and slug-test parameters: Scale effect or artifact?
J.J. Butler Jr., J.M. Healey
1998, Groundwater (36) 305-312
In most field investigations, information about hydraulic conductivity (K) is obtained through pumping or slug tests. A considerable body of data has been amassed that indicates that the K estimate from a pumping test is, on average, considerably larger than the estimate obtained from a series of slug tests in...
Mourning Dove nesting habitat and nest success in Central Missouri
R.D. Drobney, J.H. Schulz, S.L. Sheriff, W.J. Fuemmeler
1998, Journal of Field Ornithology (69) 299-305
Previous Mourning Dove (Zenaida macroura) nesting studies conducted in areas containing a mixture of edge and continuous habitats have focused on edge habitats. Consequently, little is known about the potential contribution of continuous habitats to dove production. In this study we evaluated the relative importance of these two extensive habitat...
Infiltration and hydraulic connections from the Niagara River to a fractured-dolomite aquifer in Niagara Falls, New York
R. M. Yager, W. M. Kappel
1998, Journal of Hydrology (206) 84-97
The spatial distribution of hydrogen and oxygen stable-isotope values in groundwater can be used to distinguish different sources of recharge and to trace groundwater flow directions from recharge boundaries. This method can be particularly useful in fractured-rock settings where multiple lines of evidence are required to delineate preferential flow paths...
High-resolution Monte Carlo simulation of flow and conservative transport in heterogeneous porous media: 1. Methodology and flow results
R.L. Naff, D.F. Haley, E.A. Sudicky
1998, Water Resources Research (34) 663-677
In this, the first of two papers concerned with the use of numerical simulation to examine flow and transport parameters in heterogeneous porous media via Monte Carlo methods, various aspects of the modelling effort are examined. In particular, the need to save on core memory causes one to use only...
High-resolution Monte Carlo simulation of flow and conservative transport in heterogeneous porous media: 2. Transport results
R.L. Naff, D.F. Haley, E.A. Sudicky
1998, Water Resources Research (34) 679-697
In this, the second of two papers concerned with the use of numerical simulation to examine flow and transport parameters in heterogeneous porous media via Monte Carlo methods, results from the transport aspect of these simulations are reported on. Transport simulations contained herein assume a finite pulse input of conservative...
Rate of strontium sorption and the effects of variable aqueous concentrations of sodium and potassium on strontium distribution coefficients of a surficial sediment at the Idaho National Engineering Laboratory, Idaho
R.L. Bunde, J.J. Rosentreter, M. J. Liszewski
1998, Environmental Geology (34) 135-142
The rate of strontium sorption and the effects of variable aqueous concentrations of sodium and potassium on strontium sorption were measured as part of an investigation to determine strontium chemical transport properties of a surficial sediment at the Idaho National Engineering Laboratory (INEL), Idaho. Batch experimental techniques were used to...
A decision support model to assess vulnerability to salt water intrusion in the great bend prairie aquifer of Kansas
M. Sophocleous, T. Ma
1998, Groundwater (36) 476-483
A relatively simple ground water decision support system (DSS) was developed to assist in identifying salt-water vulnerable areas and in developing management policies to prevent salt-water intrusion in central Kansas. The DSS is based on a combination of numerical modeling sensitivity analyses, multiple regression analyses,...
Multivariate classification of small order watersheds in the Quabbin Reservoir Basin, Massachusetts
R.M. Lent, M.C. Waldron, J. C. Rader
1998, Journal of the American Water Resources Association (34) 439-450
ABSTRACT: A multivariate approach was used to analyze hydrologic, geologic, geographic, and water-chemistry data from small order watersheds in the Quabbin Reservoir Basin in central Massachusetts. Eighty three small order watersheds were delineated and landscape attributes defining hydrologic, geologic, and geographic features of the watersheds were...
First-generation site-response maps for the Los Angeles region based on earthquake ground motions
S. Hartzell, S. Harmsen, A. Frankel, D. Carver, E. Cranswick, M. Meremonte, J. Michael
1998, Bulletin of the Seismological Society of America (88) 463-472
Ground-motion records from aftershocks of the 1994 Northridge earthquake and mainshock records from the 1971 San Fernando, 1987 Whittier Narrows, 1991 Sierra Madre, and 1994 Northridge earthquakes are used to estimate site response relative to a rock site for the urban Los Angeles...
Salinity trends in surface waters of the Upper Colorado River Basin, Colorado
N.J. Bauch, N.E. Spahr
1998, Journal of Environmental Quality (27) 640-655
Dissolved-solids data collected in the Upper Colorado River Basin upstream from Cameo, Colorado, and in the Gunnison River Basin were analyzed for trends in flow-adjusted dissolved-solids concentrations and loads for water years 1970 to 1993, 1980 to 1993, and 1986 to 1993. Trend results for flow-adjusted...
Controls on the distribution and isotopic composition of helium in deep ground-water flows
X. Zhao, T.L.B. Fritzel, H.A.M. Quinodoz, C.M. Bethke, T. Torgersen
1998, Geology (26) 291-294
The distribution and isotopic composition of helium in sedimentary basins can be used to interpret the ages of very old ground waters. The piston-flow model commonly used in such interpretation, however, does not account for several important factors and as such works well...
The seismic response of the Los Angeles basin, California
D.J. Wald, R.W. Graves
1998, Bulletin of the Seismological Society of America (88) 337-356
Using strong-motion data recorded in the Los Angeles region from the 1992 (Mw 7.3) Landers earthquake, we have tested the accuracy of existing three-dimensional (3D) velocity models on the simulation of long-period (≧2 sec) ground motions in the Los Angeles basin and surrounding San...
Dynamic stress changes during earthquake rupture
S.M. Day, G. Yu, D.J. Wald
1998, Bulletin of the Seismological Society of America (88) 512-522
We assess two competing dynamic interpretations that have been proposed for the short slip durations characteristic of kinematic earthquake models derived by inversion of earthquake waveform and geodetic data. The first interpretation would require a fault constitutive relationship in which rapid dynamic restrengthening...
Radio-tracking manatees from land and space: tag design, implementation, and lessons learned from long-term study
C. J. Deutsch, R. K. Bonde, J.P. Reid
1998, Marine Technology Society Journal (32) 18-29
West Indian manatees (Trichechus manatus) were tracked along the Atlantic coast of Florida and Georgia (N = 83 manatees, n = 439 tag deployments, 1986-1996) and in eastern Puerto Rico (N = 8, n = 43, 1992-1996) using conventional and satellite-based radio-telemetry systems. A floating radio-tag, attached by a flexible...
Airborne volcanic plume measurements using a FTIR spectrometer, Kilauea volcano, Hawaii
K.A. McGee, T.M. Gerlach
1998, Geophysical Research Letters (25) 615-618
A prototype closed-path Fourier transform infrared spectrometer system (FTIR), operating from battery power and with a Stirling engine microcooler for detector cooling, was successfully used for airborne measurements of sulfur dioxide at Kilauea volcano. Airborne profiles of the volcanic plume emanating from the erupting Pu′u′O′o vent...
