Double-porosity models for a fissured groundwater reservoir with fracture skin
Allen F. Moench
1984, Water Resources Research (20) 831-846
Theories of flow to a well in a double-porosity groundwater reservoir are modified to incorporate effects of a thin layer of low-permeability material or fracture skin that may be present at fracture-block interfaces as a result of mineral deposition or alteration. The commonly used theory for flow in double- porosity...
STRUCTURAL AND HYDROGEOLOGIC APPLICATIONS OF REMOTE SENSING DATA, EASTERN YUCATAN PENINSULA, MEXICO.
C. Scott Southworth
Beck Barry F., editor(s)
1984, Conference Paper
Landsat and Seasat satellite images and aerial photographs of eastern Yucatan Peninsula, Mexico, were analyzed to delineate geologic controls of ground water. Significant interpretation results include the delineation of linear topographic swales, interpreted as fractures, extending more than 50 km along strike from the previously known limit of the Holbox...
Leaching of molybdenum and arsenic from uranium ore and mill tailings
E. R. Landa
1984, Hydrometallurgy (13) 203-211
A sequential, selective extraction procedure was used to assess the effects of sulfuric acid milling on the geochemical associations of molybdenum and arsenic in a uranium ore blend, and the tailings derived therefrom. The milling process removed about 21% of the molybdenum and 53% of the arsenic initially present in...
Field testing the hypothesis of Darcian flow through a carbonate aquifer
J.J. Hickey
1984, Ground Water (22) 544-547
The acceptability of the hypothesis of Darcian flow through a semiconfined carbonate aquifer was tested prior to running a multiple-day aquifer test in Pinellas County, Florida. The approach used to test the hypothesis was to run a number of hour-long aquifer tests at different discharges with drawdown measured at the...
Multiple use of land and water
J.V. Huner, H.K. Dupree
Dupree H. K., Huner J. V., editor(s)
1984, Book chapter, Third Report to the Fish Farmers: The Status of Warmwater Fish Farming Research
No abstract available at this time...
Gold in natural water: A method of determination by solvent extraction and electrothermal atomization
J. B. McHugh
1984, Journal of Geochemical Exploration (20) 303-310
A method has been developed using electrothermal atomization to effectively determine the amount of gold in natural water within the nanogram range. The method has four basic steps: (1) evaporating a 1-L sample; (2) putting it in hydrobromic acid-bromine solution; (3) extracting the sample with methyl-isobutyl-ketone; and (4) determining the...
Water chemistry at selected sites on Pools 7 and 8 of the Upper Mississippi River: A ten-year survey
V. K. Dawson, G. A. Jackson, C. E. Korschgen
J.C. Wiener, R.V. Anderson, D.R. McConville, editor(s)
1984, Book chapter, Contaminants in the Upper Mississippi River
No abstract available....
Effect of censoring trace-level water-quality data on trend-detection capability
R. J. Gilliom, R.M. Hirsch, E.J. Gilroy
1984, Environmental Science & Technology (18) 530-535
Monte Carlo experiments were used to evaluate whether trace-level water-quality data that are routinely censored (not reported) contain valuable information for trend detection. Measurements are commonly censored if they fall below a level associated with some minimum acceptable level of reliability (detection limit). Trace-level organic data were simulated with best-...
Water chemistry at selected sites on pools 7 and 8 of the upper Mississippi River: a ten-year survey
V. K. Dawson, G. A. Jackson, C. E. Korschgen
J.G. Wiener, R.V. Anderson, D.R. McConville, editor(s)
1984, Book chapter, Contaminants in the upper Mississippi River
Abstract not submitted to date...
Characterization and geochemistry of Devonian oil shale North Alabama - South Central Tennessee
K.F. Rheams, T.L. Neathery
1984, Conference Paper, Preprints
Based on the physical and chemical data obtained to date, the Devonian oil shale rock of north Alabama and south-central Tennessee appears to offer an attractive potential for future resource development. The shale rock appears to have formed in a restrictive marine environment which provided opportunity for the accumulation of...
Permeability of fault gouge under confining pressure and shear stress
C.A. Morrow, L.Q. Shi, J.D. Byerlee
1984, Journal of Geophysical Research Solid Earth (89) 3193-3200
The permeability of both clay-rich and non-clay gouges, as well as several pure clays, was studied as a function of confining pressures from 5 to 200 MPa and shear strain to 10. Permeability ranged over four orders of magnitude, from around 10−22 to 10−18 m2 (1 darcy = 0.987 × 10−12 m2). The lowest...
Long-term observations of bottom conditions and sediment movement on the Atlantic continental shelf; time-lapse photography from instrumented tripod
Bradford Butman, Cynthia G. Bryden, Stephanie L. Pfirman, William J. Strahle, Marlene A. Noble
1984, Conference Paper
An instrument system that measures bottom current, temperature, light transmission, and pressure, and that photographs the bottom at 2- to 6-hour intervals has been developed to study sediment transport on the Atlantic Continental Shelf. Instruments have been deployed extensively along the United States East Coast Continental Shelf for periods of...
Distribution of Eurasian watermilfoil, Myriophyllum spicatum, in the St. Clair-Detroit River system in 1978
Donald W. Schloesser, Bruce A. Manny
1984, Journal of Great Lakes Research (10) 322-326
Submersed macrophytes were surveyed at 595 stations located throughout the St. Clair-Detroit River system between Lakes Huron and Erie, 23 August to 13 October 1978. Eurasian watermilfoil (Myriophyllum spicatum), first recorded in the system in 1974, became the fourth most common submersed macrophyte in the system by 1978. However, it...
Growth, reproduction, mortality, distribution, and biomass of freshwater drum in Lake Erie
Michael T. Bur
1984, Journal of Great Lakes Research (10) 48-58
Predominant age-groups in the Lake Erie freshwater drum Aplodinotus grunnienspopulation were 3, 4, and 5 as determined from gill net, trap net, bottom trawl, and midwater trawl samples. Age and growth calculations indicated that females grew faster than males. However, the length-weight relation did not differ between sexes and was described...
RECOMMENDATIONS FROM THE DEPARTMENT OF THE INTERIOR - EEZ SYMPOSIUM.
Robert W. Rowland, Bonnie A. McGregor
1984, Conference Paper, Oceans Conference Record (IEEE)
The Presidential proclamation on March 10, 1983, of a 200-nautical-mile-wide Exclusive Economic Zone (EEZ) focuses attention on the mineral resources of a vast submarine area. The hard-mineral resources in the EEZ include shallow-water placer deposits, polymetallic sulfide deposits, and cobalt-enriched manganese crusts in deeper water. The petroleum resource potential of...
Life cycle of a mayfly Hexagenia limbata in the St. Marys River between Lakes Superior and Huron
Donald W. Schloesser, Jarl K. Hiltunen
1984, Journal of Great Lakes Research (10) 435-439
Length-frequency distribution curves of Hexagenia limbata nymphs collected in May, August, and October 1974 and May 1975 in the St. Marys River between Lakes Superior and Huron were bimodal for each sampling period. These curves, combined with interpretation of nymphal emergence period and mean surface water temperatures, indicate that the population of Hexagenia nymphs...
Evolution of the yardangs at Rogers Lake, California
A. W. Ward, R. Greeley
1984, Geological Society of America Bulletin (95) 829-837
Yardangs are streamlined, wind-eroded hills common to most deserts. Yardangs at Rogers Lake, Mojave Desert, California, have streamlined forms characteristic of objects eroded by moving fluids, a teardrop shape that approaches an ideal 1:4 width-to-length ratio. In wind-tunnel simulations, miniature forms of various...
A survey of North American migratory waterfowl for duck plague (duck virus enteritis) virus
Christopher J. Brand, Douglas E. Docherty
1984, Journal of Wildlife Diseases (20) 261-266
A survey of migratory waterfowl for duck plague (DP) virus was conducted in the Mississippi and Central flyways during 1982 and in the Atlantic and Pacific flyways during 1983. Cloacal and pharyngeal swabs were collected from 3,169 migratory waterfowl in these four flyways, principally mallards (Anas platyrhynchos L.), black ducks (Anas...
Waterfowl. Goose populations in the Great Plains
F.B. Lee
F.R. Henderson, editor(s)
1984, Book chapter, Guidelines for increasing wildlife on farms and ranches
Estimated water use in St. Thomas, U.S. Virgin Islands, July 1983 - June 1984
Heriberto Torres-Sierra, Rafael Dacosta
1984, Open-File Report 84-721
No abstract available....
HOT WATER DRILL FOR TEMPERATE ICE.
Philip L. Taylor
1984, Conference Paper, CRREL Special Report (US Army Cold Regions Research and Engineering Laboratory)
The development of a high-pressure hot-water drill is described, which has been used reliably in temperate ice to depths of 400 meters with an average drill rate of about 1. 5 meters per minute. One arrangement of the equipment weighs about 500 kilograms, and can be contained on two sleds,...
Composition and energy contents of mature inshore spawning capelin (Mallotus villosus): Implications for seabird predators
W.A. Montevecchi, John F. Piatt
1984, Comparative Biochemistry and Physiology, Part A: Molecular & Integrative Physiology (78) 15-20
1. Lipid levels of capelin are highest in late fall and lowest during the summer spawning season; protein levels are constant at 13–14% body wt throughout the year.2. Ovid females contained significantly more lipid and protein and less water and had higher energy densities than males and spent...
Effects of hydropower development on Columbia River salmonids
D.W. Rondorf, G.A. Gray, W.R. Nelson
1984, Conference Paper, Proceedings of the international conference on hydropower waterpower
No abstract available...
Methods of Fitting a Straight Line to Data: Examples in Water Resources
Robert M. Hirsch, Edward J. Gilroy
1984, Water Resources Bulletin (20) 705-711
Three methods of fitting straight lines to data are described and their purposes are discussed and contrasted in terms of their applicability in various water resources contexts. The three methods are ordinary least squares (OLS), least normal squares (LNS), and the line of organic correlation (OC). In all three methods...
Transport and distribution of nutrients in the Loxahatchee River estuary, Southeastern Florida, 1979 to 1981
B. F. McPherson, W. H. Sonntag
1984, Water Resources Bulletin (20) 27-34
[No abstract available]...
