Factors controlling the major ion chemistry of streams in the Blue Ridge and Valley and Ridge physiographic provinces of Virginia and Maryland
L.J. Puckett, O.P. Bricker
1992, Hydrological Processes (6) 79-98
The factors controlling the chemistry of 69 low-order streams in the Blue Ridge and Valley and Ridge physiographic provinces of Virginia and Maryland were studied over a 13-month period. Principal component analysis was used to examine regional patterns in stream chemistry and to examine...
Energy, time, and channel evolution in catastrophically disturbed fluvial systems
A. Simon
1992, Geomorphology (5) 345-372
Two diverse fluvial systems show that with time, channels adjust such that the rate of energy dissipation is minimized. One fluvial system, characterized by high relief and coarse-grained sediment, was subjected to an explosive volcanic eruption; the other system, characterized by low relief and fine-grained sediment, was subjected to dredging...
Evidence from Cd/Ca ratios in foraminifera for greater upwelling off California 4,000 years ago
A. VanGeen, N. Luoma, C. C. Fuller, R. Anima, H.E. Clifton, S. Trumbore
1992, Nature (358) 54-56
UPWELLING of nutrient-rich Pacific deep water along the North American west coast is ultimately driven by the temperature difference between air masses over land and over the ocean. The intensity of upwelling, and biological production in the region, could therefore be affected by anthropogenic climate change. Examination of the geological...
Petrographic and anatomical characteristics of plant material from two peat deposits of Holocene and Miocene age, Kalimantan, Indonesia
T.A. Moore, R.E. Hilbert
1992, Review of Palaeobotany and Palynology (72) 199-227
Samples from two peat-forming environments of Holocene and Miocene age in Kalimantan (Borneo), Indonesia, were studied petrographically using nearly identical sample preparation and microscopic methodologies. Both deposits consist of two basic types of organic material: plant organs/tissues and fine-grained matrix. There are seven predominant types of plant organs and tissues:...
Seasonal dynamics of groundwater-lake interactions at Doñana National Park, Spain
Laura A. Sacks, Janet S. Herman, Leonard F. Konikow, Antonio L. Vela
1992, Journal of Hydrology (136) 123-154
The hydrologic and solute budgets of a lake can be strongly influenced by transient groundwater flow. Several shallow interdunal lakes in southwest Spain are in close hydraulic connection with the shallow ground water. Two permanent lakes and one intermittent lake have chloride concentrations that differ by almost an order of...
Selenium mobilization in a surface coal mine, Powder River Basin, Wyoming, U.S.A.
G.B. Dreher, R. B. Finkelman
1992, Environmental Geology and Water Sciences (19) 155-167
Elevated concentrations (0.6-0.9 mg/l) of selenium were detected in the groundwater of a small backfill area at a surface mine in the Powder River Basin, Wyoming. This report focuses on the source of selenium, its modes of occurrence in overburden deposits and backfill groundwater, and its fate. The immediate source...
Heavy metals in the threeridge mussel Amblema plicata plicata (Say, 1817) in the upper Mississippi River
T.J. Naimo, D. L. Waller, L. E. Holland Bartels
1992, Journal of Freshwater Ecology (7) 209-217
Concentrations of mercury and zinc in the threeridge mussel Amblema plicata plicata, sampled in 1987 from Pools 3 and 10 in the upper Mississippi River, were comparable to concentrations in mussels from moderately contaminated systems, while copper concentrations were similar to concentrations in mussels from more polluted...
Mechanisms of iron photoreduction in a metal-rich, acidic stream (St. Kevin Gulch, Colorado, U.S.A.)
B. A. Kimball, Diane M. McKnight, G.A. Wetherbee, R.A. Harnish
1992, Chemical Geology (96) 227-239
Iron photoreduction in metal-rich, acidic streams affected by mine drainage accounts for some of the variability in metal chemistry of such streams, producing diel variations in Fe(II). Differentiation of the mechanisms of the Fe photoreduction reaction by a series of in-stream experiments at St. Kevin Gulch, Colorado, indicates that a...
Use of forecasting signatures to help distinguish periodicity, randomness, and chaos in ripples and other spatial patterns
D. M. Rubin
1992, Chaos (2) 525-536
Forecasting of one-dimensional time series previously has been used to help distinguish periodicity, chaos, and noise. This paper presents two-dimensional generalizations for making such distinctions for spatial patterns. The techniques are evaluated using synthetic spatial patterns and then are applied to a natural example: ripples formed in sand by blowing...
Two-dimensional circulation modeling of the Pamlico River estuary, North Carolina
G. L. Giese, Jerad Bales
1992, Conference Paper
A two dimensional, vertically averaged, unsteady flow model was applied to a 50- kilometer reach of the Pamlico River estuary, North Carolina. The model computational grid, which consists of about 16,000 square cells, each 200 meters on a side, was developed from more than one million depth soundings. Information from...
Sampling and analysis for radon-222 dissolved in ground water and surface water
L. DeWayne Cecil, T.F. Gesell
1992, Environmental Monitoring and Assessment (20) 55-66
Radon-222 is a naturally occurring radioactive gas in the uranium-238 decay series that has traditionally been called, simply, radon. The lung cancer risks associated with the inhalation of radon decay products have been well documented by epidemiological studies on populations of uranium miners.The realization that radon is a public health...
Floodplain storage of mine tailings in the Belle Fourche river system: a sediment budget approach
D. C. Marron
1992, Earth Surface Processes and Landforms (17) 675-685
Arsenic‐contaminated mine tailings that were discharged into Whitewood Creek at Lead, South Dakota, from 1876 to 1978, were deposited along the floodplains of Whitewood Creek and the Belle Fourche River. The resulting arsenic‐contaminated floodplain deposit consists mostly of overbank sediments and filled abandoned meanders along White‐wood Creek, and overbank and...
Evaluation of the depth-integration method of measuring water discharge in large rivers
J. A. Moody, B.M. Troutman
1992, Journal of Hydrology (135) 201-236
The depth-integration method of measuring water discharge makes a continuous measurement of the water velocity from the water surface to the bottom at 20 to 40 locations or verticals across a river. It is especially practical for large rivers where river traffic makes it impractical to use boats...
Comparison of solid-phase and pore-water approaches for assessing the quality of marine and estuarine sediments
Robert Scott Carr, Duane Chapman
1992, Chemistry and Ecology (7) 19-30
As part of our continuing evaluation of the pore-water approach for assessing sediment quality, we made a series of side-by-side comparisons between the standard 10-day amphipod whole sediment test with the corophiid Grandidierella japonica and a suite of tests using pore water extracted from the same sediments. the pore-water tests...
Hydrology of the Cave Springs area near Chattanooga, Hamilton County, Tennessee
Arthur D. Bradfield
1992, Water-Resources Investigations Report 92-4018
The hydrology of Cave Springs, the second largest spring in East Tennessee was investigated from July 1987 to September 1989. Wells near the spring supply about 5 million gallons per day of potable water to people in Hamilton County near Chattanooga. Discharge from the spring averaged about 13.5 cubic feet...
Geohydrology and potential effects of development of freshwater resources in the northern part of the Hueco Bolson, Dona Ana and Otero Counties, New Mexico, and El Paso County, Texas
B. R. Orr, D. W. Risser
1992, Water-Resources Investigations Report 91-4082
No abstract available....
Assessment of sediment contamination at Great Lakes Areas of Concern: the ARCS Program Toxicity-Chemistry Work Group strategy
P.E. Ross, G.A. Burton Jr., E.A. Crecelius, J. C. Filkins, J. P. Giesy, C.G. Ingersoll, P.F. Landrum, M. J. Mac, T. J. Murphy, J. E. Rathbun, V. E. Smith, H. E. Tatem, R.W. Taylor
1992, Journal of Aquatic Ecosystem Health (1) 193-200
In response to a mandate in Section 118(c)(3) of the Water Quality Act of 1987, a program called Assessment and Remediation of Contaminated Sediments (ARCS) was established. Four technical work groups were formed. This paper details the research strategy of the Toxicity-Chemistry Work Group.The Work Group's general objectives...
Stable isotope study of water-rock interaction and ore formation, Bayhorse base and precious metal district, Idaho
R.R. Seal II, R. O. Rye
1992, Economic Geology (87) 271-287
The Bayhorse base and precious metal district is situated east of the Idaho batholith in south-central Idaho. The ores occur near the Nevada Mountain granitic stock as veins cutting the lower Paleozoic Ramshorn Slate and the Garden Creek Phyllite, and as fillings around breccia fragments within the Bayhorse Dolomite. The...
Hydrothermal ore-forming processes in the light of studies in rock- buffered systems: II. Some general geologic applications
J.J. Hemley, J.P. Hunt
1992, Economic Geology (87) 23-43
The experimental metal solubilities for rock-buffered hydrothermal systems, reported by Hemley et al. (1992), provide important insights into the acquisition, transport, and deposition of metals in real hydrothermal systems that produced base metal ore deposits. Water-rock reactions that determine pH, together with total chloride and changes in temperature and fluid...
Northern Prairie Wildlife Research Center: a focus on waterfowl research
R.E. Kirby, D.S. Gilmer
1992, California Waterfowl (18) 41-43
No abstract available at this time...
The use of freshwater and saltwater animals to distinguish between the toxic effects of salinity and contaminants in irrigation drain water
Christopher G. Ingersoll, F.J. Dwyer, S.A. Burch, M.K. Nelson, D.R. Buckler, J. B. Hunn
1992, Environmental Toxicology and Chemistry (11) 503-511
Irrigation drain waters entering Stillwater Wildlife Management Area (SWMA) in south-western Nevada contain elevated levels of salinity and several inorganic contaminants (As, B, Cu, Li, Mo, and Sr). Mortalities of fish and waterfowl at the management area are believed to be associated with the poor water quality of the drains....
Status of coregonine fishes in the Laurentian Great Lakes
Guy W. Fleischer
1992, Polskie Archiwum Hydrobiologii (39) 247-259
The post-glacial coregonine assemblage in the Great Lakes included several species of the genera Prosopium and Coregonus. Overfishing, habitat degradation, and competition with various exotic fish species severely reduced coregonine abundance and altered their distribution by the mid to latter part of the 20th century. Most of the...
Notes: Group-size-mediated metabolic rate reduction in American shad
R. M. Ross, T. W. H. Backman, K.E. Limburg
1992, Transactions of the American Fisheries Society (121) 385-390
The relation of oxygen consumption to ambient temperature and group size was studied in juvenile American shad Alosa sapidissima at three group sizes: 5 or 6 (small), 9–13 (medium), and 41–48 (large) fish per 500‐L tank. Oxygen consumption rates, water temperatures, and behavior were measured concurrently in the three group‐size treatments. Schooling...
Lake trout spawning habitat in the Six Fathom Bank-Yankee Reef lake trout sanctuary, Lake Huron
Thomas A. Edsall, Charles L. Brown, Gregory W. Kennedy, Thomas P. Poe
1992, Journal of Great Lakes Research (18) 70-90
Attempts to reestablish self-sustaining stocks of lake trout (Salvelinus namaycush) in the lower four Great Lakes, where the species was extinguished in the 1950s and 1960s, have been largely unsuccessful. To avoid many of the problems believed to be contributing to this failure, the fishery management community recently established several...
Characteristics and processing of seismic data collected on thick, floating ice: Results from the Ross Ice Shelf, Antarctica
Bruce C. Beaudoin, Uri S. ten Brink, Tim A. Stern
1992, Geophysics (57) 1359-1372
Coincident reflection and refraction data, collected in the austral summer of 1988/89 by Stanford University and the Geophysical Division of the Department of Scientific and Industrial Research, New Zealand, imaged the crust beneath the Ross Ice Shelf, Antarctica. The Ross Ice Shelf is a unique acquisition environment for seismic reflection...
