Fate of alkylbenzenesulfonates and dialkyltetralinsulfonates in sewage contaminated ground water
Jennifer A. Field, Larry B. Barber, E. Michael Thurman, Billy L. Moore, David L. Lawrence, David A. Peake
1992, Environmental Science & Technology (26) 1140-1148
No abstract available....
Solute transport with multisegment, equilibrium-controlled, classical reactions: Problem solvability and feed forward method's applicability for complex segments of at most binary participants
Jacob Rubin
1992, Water Resources Research (28) 1681-1702
The feed forward (FF) method derives efficient operational equations for simulating transport of reacting solutes. It has been shown to be applicable in the presence of networks with any number of homogeneous and/or heterogeneous, classical reaction segments that consist of three, at most binary participants. Using a sequential (network type...
Effect of membrane filtration artifacts on dissolved trace element concentrations
Arthur J. Horowitz, Kent A. Elrick, Mark R. Colberg
1992, Water Research (26) 753-763
Among environment scientists, the current and almost universally accepted definition of dissolved constituents is an operational one-only those materials which pass through a 0.45-μm membrane filter are considered to be dissolved. Detailed laboratory and field studies on Fe and Al indicate that a number of factors associated...
Associations between benthic flora and diel changes in dissolved arsenic, phosphorus, and related physico-chemical parameters
James S. Kuwabara
1992, Freshwater Science (11) 218-222
Diel relationships between physical and chemical parameters and biomass were examined along a 57-km reach of Whitewood Creek, South Dakota, between 29 August and 2 September 1988. A time lag of ∼3-6 h for fluctuations in soluble reactive phosphorus (SRP) concentrations (ranging from 0.1 to 0.5 μM at the downstream...
A solute flux approach to transport in heterogeneous formations: 2. Uncertainty analysis
Allen M. Shapiro, V.D. Cvetkovic
1992, Water Resources Research (28) 1377-1388
Uncertainty in the mass flux for advection dominated solute movement in heterogeneous porous media is investigated using the Lagrangian framework developed in paper 1 by Dagan et al. (this issue). Expressions for the covariance of the mass flux and cumulative mass flux are derived as functions of the injection volume...
A solute flux approach to transport in heterogeneous formations: 1. The general framework
V.D. Cvetkovic, Allen M. Shapiro
1992, Water Resources Research (28) 1369-1376
It is common to represent solute tranport in heterogeneous formations in terms of the resident concentration C (x, t), regarded as a random space function. The present study investigates the alternative representation by q , the solute mass flux at a point of a control plane normal to the mean flow. This representation is...
Hydrological, geomorphological, and chemical effects of Hurricane Andrew on coastal marshes of Louisiana
Larry L. Jackson, A.L. Foote, Laurie S. Balistrieri
1992, Journal of Coastal Research 306-323
Hydrological conditions are reported for the hurricane-induced storm surge at marsh sites in Terrebonne and Barataria Basins. There was a 6 hour or greater delay in the arrival of the storm surge at interior marsh sites compared to coastal locations. A water surge of about 1.5 m with a salinity...
A model for the generation of two-dimensional surf beat
Jeffrey H. List
1992, Journal of Geophysical Research C: Oceans (97) 5623-5635
A finite difference model predicting group-forced long waves in the nearshore is constructed with two interacting parts: an incident wave model providing time-varying radiation stress gradients across the nearshore, and a long-wave model which solves the equations of motion for the forcing imposed by the incident waves. Both shallow water...
A mid-Permian chert event: Widespread deposition of biogenic siliceous sediments in coastal, island arc and oceanic basins
B.L. Murchey, D. L. Jones
1992, Palaeogeography, Palaeoclimatology, Palaeoecology (96) 161-174
Radiolarian and conodont of Permian siliceous rocks from twenty-three areas in teh the circum-Pacific and Mediterranean regions reveal a widespread Permian Chert Event during the middle Leonardian to Wordian. Radiolarian- and (or) sponge spicule-rich siliceous sediments accumulated beneath high productivity zones in coastal, island arc and oceanic basins. Most of...
Limitations of quantitative analysis of deep crustal seismic reflection data: Examples from GLIMPCE
Myung W. Lee, Deborah R. Hutchinson
1992, Journal of Geophysical Research B: Solid Earth (97) 4705-4719
Amplitude preservation in seismic reflection data can be obtained by a relative true amplitude (RTA) processing technique in which the relative strength of reflection amplitudes is preserved vertically as well as horizontally, after compensating for amplitude distortion by near-surface effects and propagation effects. Quantitative analysis of relative true amplitudes of...
The relationship between pH and community structure of invertebrates in streams of the Shenandoah National Park, Virginia
Richard S. Feldman, Edward F. Connor
1992, Freshwater Biology (27) 261-276
1. A replicated natural experiment was used to assess the influence of pH and low alkalinity on abundance and richness of invertebrate families in streams draining catchments that receive acid deposition. Individual streams were used as the unit of replication, allowing conclusions to refer to a class of streams rather...
Water and sediment in the middle Rio Grande Valley, New Mexico: use of a sediment transport capacity index
Robert T. Milhous
1992, Book, Proceedings of the 12th Annual American Geophysical Union Hydrology Days
No abstract available....
Legal mechanisms for protecting riparian resource values
Berton L. Lamb, Eric Lord
1992, Water Resources Research (28) 965-977
Riparian resources include the borders of rivers, lakes, ponds, and potholes. These border areas are very important for a number of reasons, including stream channel maintenance, flood control, aesthetics, erosion control, fish and wildlife habitat, recreation, and water quality maintenance. These diverse functions are not well protected by law or...
Sources of nonresponse to the Federal Waterfowl Hunter Questionnaire Survey
Richard J. Barker, Paul H. Geissler, Brett A. Hoover
1992, Journal of Wildlife Management (56) 337-343
Response rates to the Federal Waterfowl Hunter Questionnaire Survey (WHQS) have declined since the 1950's, suggesting that harvest estimates may be biased. Consequently, we investigated reasons for WHQS nonresponse using surveys of waterfowl hunters in Arkansas, California, Louisiana, Minnesota, New Jersey, and Texas. Sampling frames were constructed using lists of...
Nonresponse patterns in the Federal Waterfowl Hunter Questionnaire Survey
Grey W. Pendleton
1992, Journal of Wildlife Management (56) 344-348
I analyzed data from the 1984 and 1986 Federal Waterfowl Hunter Questionnaire Survey (WHQS) to estimate the rate of return of name and address contact cards, to evaluate the efficiency of the Survey's stratification scheme, and to investigate potential sources of bias due to nonresponse at the contact card and...
Shear stress and bed roughness estimates for combined wave and current flows over a rippled bed
D.E. Drake, D.A. Cacchione, W.D. Grant
1992, Journal of Geophysical Research C: Oceans (97) 2319-2326
High‐quality bottom boundary layer measurements and bottom photographs were obtained over a sand substrate during a 10‐day deployment of the GEOPROBE tripod at an inner shelf (35‐m water depth) location off northern California. The seafloor surrounding the tripod was composed of well‐sorted medium‐grained (mean diameter, 0.25 mm) sand which was...
A note on sediment, hydrology, and cottonwood in the middle Rio Grande Valley, New Mexico
Robert T. Milhous
1992, Book, Colorado Water Engineering and Management Conference
No abstract available....
Gravity-driven groundwater flow and slope failure potential: 2. Effects of slope morphology, material properties, and hydraulic heterogeneity
Mark E. Reid, Richard M. Iverson
1992, Water Resources Research (28) 939-950
Hillslope morphology, material properties, and hydraulic heterogeneities influence the role of groundwater flow in provoking slope instability. We evaluate these influences quantitatively by employing the elastic effective stress model and Coulomb failure potential concept described in our companion paper (Iverson and Reid, this issue). Sensitivity analyses show that of four...
Flow resistance under conditions of intense gravel transport
John Pitlick
1992, Water Resources Research (28) 891-903
A study of flow resistance was undertaken in a channelized reach of the North Fork Toutle River, downstream of Mount St. Helens, Washington. Hydraulic and sediment transport data were collected in flows with velocities up to 3 m/s and shear stresses up to 7 times the critical value needed for...
Gravity-driven groundwater flow and slope failure potential: 1. Elastic effective-stress model
Richard M. Iverson, Mark E. Reid
1992, Water Resources Research (28) 925-938
Hilly or mountainous topography influences gravity-driven groundwater flow and the consequent distribution of effective stress in shallow subsurface environments. Effective stress, in turn, influences the potential for slope failure. To evaluate these influences, we formulate a two-dimensional, steady state, poroelastic model. The governing equations incorporate groundwater effects as body forces,...
Comparison of downhole and surface sampling for the determination of volatile organic compounds (VOCs) in ground water
M. E. Rosen, James F. Pankow, Jacob Gibs, Thomas E. Imbrigiotta
1992, Ground Water Monitoring Review (12) 126-133
The relative precision and accuracy of sampling and analysis methods for the determination of trace concentrations of volatile organic compounds (VOCs) in ground water were compared. Samples were collected from a well containing nanogram‐per‐liter (ng/L) to microgram‐per‐liter (μg/L) levels of VOCs. A Keck helical rotor submersible pump was used to...
Evaluating enhancement of striped bass in the context of potential predation on anadromous salmonids in Coos Bay, Oregon
J. H. Johnson, A.A. Nigro, R. Temple
1992, North American Journal of Fisheries Management (12) 103-108
We describe an approach for evaluating the predation on anadromous salmonids that could result from enhancement of striped bass Morone saxatilis in Coos Bay, Oregon. Predation by striped bass on juvenile salmonids has been documented there since 1930. To provide a basis for the decision about enhancement of striped bass in Coos...
Groundwater use: Equilibrium between social benefits and potential environmental costs
M.R. Llamas, W. Back, J. Margat
1992, Hydrogeology Journal (1) 3-14
In many countries groundwater resources are under-appreciated and, therefore, underutilizied; whereas, in some areas they are inappropriately exploited and, therefore, over-utilized. “Over utilization” can lead to depletion in quantity or a degradation in quality or both. Obstacles to effective management include: (1) lack of knowledge of basic principles of...
Geographic information systems
Water Resources Division, U.S. Geological Survey
1992, Report
Geographic information systems (GIS) technology can be used for scientific investigations, resource management, and developmental planning. For example, a GIS might allow emergency planners to easily calculate emergency response times in the event of a natural disaster, or a GIS might be used to find wetlands that need protection form...
Regional characterization and setting for the Loch Vale Watershed study
Jill S. Baron, M.A. Mast
1992, Book chapter, Biogeochemistry of a subalpine ecosystem: Loch Vale watershed
No abstract available....
