Estimation of distributional parameters for censored trace level water quality data: 1. Estimation techniques
Robert J. Gilliom, Dennis R. Helsel
1986, Water Resources Research (22) 135-146
A recurring difficulty encountered in investigations of many metals and organic contaminants in ambient waters is that a substantial portion of water sample concentrations are below limits of detection established by analytical laboratories. Several methods were evaluated for estimating distributional parameters for such censored data sets using only uncensored observations....
ESTIMATION OF URBAN STORM-RUNOFF LOADS.
Nancy E. Driver, David J. Lystrom
Urbonas BenRoesner Larry A., editor(s)
1986, Conference Paper
The United States was divided into three regions, on the basis of mean annual rainfall, to decrease the variability in storm-runoff constituent loads and to improve regression relations with basin and climatic characteristics. Multiple-regression analyses, in progress, are being refined to determine the best regression models for each of the...
Paleontology and deposition of the Phosphoria Formation.
B. R. Wardlaw, J.W. Collinson
1986, Contributions to Geology - University of Wyoming, Laramie (24) 107-142
The Phosphoria Formation and related rocks were deposited in an interior sag basin developed in the Cordilleran miogeocline of western North America. Deposition can be characterized as a fringing bank complex on a carbonate ramp. Conodont-brachiopod biostratigraphy provides a sufficient relative time framework for correlation of the many units. These...
FLOOD REDUCTION EFFICIENCY OF THE WATER-MANAGEMENT SYSTEM IN DADE COUNTY (MIAMI), FLORIDA.
Bradley G. Waller
1986, Conference Paper
Two tropical weather systems, Hurricane Donna (1960) and Tropical Storm Dennis (1981), produced nearly equivalent amounts of rainfall in a 48-hour period south of the Miami (Florida) area. These two systems caused extensive flooding over a 600-square mile area, which is primarily agricultural and low density residential. The 1960 and...
Maturity and fecundity of the white perch, Morone americana, in western Lake Erie
Michael T. Bur
1986, Ohio Journal of Science (86) 205-207
Abstract has not been submitted...
Environmental fate of mercury discharged into the upper Wisconsin River
R.G. Rada, J.E. Findley, J.G. Wiener
1986, Water, Air, & Soil Pollution (29) 57-76
The authors studied the distribution of Hg in sediments, fish, and crayfish in a 60 km reach of the Upper Wisconsin River that formerly received Hg in discharges from pulp and paper mills. The most heavily contaminated strata of sediments were deposited during the 1950s and early 1960s...
Ground-water recharge and its effects on nitrate concentration beneath a manured field site in Pennsylvania
J. M. Gerhart
1986, Groundwater (24) 483-489
Ground-water recharge to a shallow, unconfined, fractured dolomite aquifer underlying agricultural land in Lancaster County, Pennyslvania occurs by two mechanisms. Direct recharge occurs through pathways such as near-surface bedrock fractures and sinkholes, and affects dissolved nitrate concentration of ground water within two to three days; its effects last only about...
Ground Water
Water Resources Division, U.S. Geological Survey
1986, Report
Some water underlies the Earth's surface almost everywhere, beneath hills, mountains,plains, and deserts. It's not always accessible, or fresh enough for use without treatment, and it's sometimes difficult to locate or to measure and descri be. This water may occur close to the land surface, as in a marsh, or...
Radiocarbon studies of latest Pleistocene and Holocene lava flows of the Snake River Plain, Idaho: Data, lessons, interpretations
M. A. Kuntz, E.C. Spiker, M. Rubin, D.E. Champion, R.H. Lefebvre
1986, Quaternary Research (25) 163-176
Latest Pleistocene-Holocene basaltic lava fields of the Snake River Plain, Idaho, have been dated by the radiocarbon method. Backhoe excavations beneath lava flows typically yielded carbon-bearing, charred eolian sediment. This material provided most of the samples for this study; the sediment typically contains less than 0.2% carbon. Charcoal fragments were...
Notes on sedimentation activities calendar year 1985
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1986, Report
This report is a digest of information furnished by Federal agencies conducting sedimentation investigations. The decision to publish the report was made in 1946, from a proposal by the Chairman of the Federal Interagercy River Basin Committee, Subcommittee on Ground Water. The subcommittee approved the proposal and agreed to issue...
SIMULATION OF PEANUT GROWTH IN OKLAHOMA.
Gerald D. Grosz, Ronald L. Elliott, James H. Young
1986, Conference Paper, Paper - American Society of Agricultural Engineers
Two peanut growth models of varying complexity were calibrated for Oklahoma varieties and growing conditions. Both models predicted pod growth quite well. The models were then used to simulate the effects of various soil moisture levels on peanut growth. The more complex model has potential as a management tool....
Differential dissolution of a Pleistocene reef in the groundwater mixing zone of coastal Yucatan, Mexico
W. Back, B.B. Hanshaw, J.S. Herman, J. N. Van Driel
1986, Geology (14) 137-140
Mixing of fresh groundwater with subterranean Caribbean seawater generates a highly reactive geochemical zone that enhances aragonite and calcite dissolution and permits neomorphism of aragonite....
A comparison of two methods for determining copper partitioning in oxidized sediments
Samuel N. Luoma
1986, Marine Chemistry (20) 45-59
Model estimations of the proportion of Cu in oxidized sediments associated with extractable organic materials show some agreement with the proportion of Cu extracted from those sediments with ammonium hydroxide. Data were from 17 estuaries of widely differing sediment chemistry. The modelling and extraction methods agreed best where concentrations of...
Field observations of bed shear stress and sediment resuspension on continental shelves, Alaska and California
D.E. Drake, D.A. Cacchione
1986, Continental Shelf Research (6) 415-429
Bed shear stress was estimated using wave and current measurements obtained with the GEOPROBE bottom-tripod system during resuspension events in Norton Sound, Alaska, and on the northern California shelf. The boundary-layer model of Grant and Madsen (1979, Journal of Geophysical Research, 84, 1797-1808) was used to compute the bed shear...
Shallow subsurface temperature surveys in the Basin and Range province, U.S.A.-I. Review and evaluation
F. H. Olmsted, A. H. Welch, S. E. Ingebritsen
1986, Geothermics (15) 251-265
Temperature surveys at depths of 1–2 m have had varying success in geothermal exploration in the Basin and Range province. The most successful surveys have identified patterns of near-surface thermal-fluid flow within areas of less than 2 km2. Results have been less consistent in larger areas where zones of hydrothermal...
Pleistocene glacial and interglacial stratigraphy of new England, Long Island, and adjacent georges bank and gulf of Maine
B. D. Stone, H.W. Borns Jr.
1986, Quaternary Science Reviews (5) 39-52
No abstract available....
Tidal hydraulics of San Francisco Bay
R. T. Cheng, L. H. Smith
1986, Conference Paper, Proceedings, symposium on San Joaquin Valley agriculture waste water and implications for the San Francisco Bay estuarine system,
Changes in growth and maturity of walleyes associated with stock rehabilitation in western Lake Erie, 1964-1983
Kenneth M. Muth, David R. Wolfert
1986, North American Journal of Fisheries Management (6) 168-175
The precipitous decline in abundance of walleyes (Stizostedion vitreum vitreum) in western Lake Erie during the 1960s caused major concerns for the future of this resource. Mercury contamination in walleyes in 1970 resulted in a moratorium on commercial fishing in United States and Canadian waters. The opportunity arose for resource...
Recovering fresh water stored in saline limestone aquifers
M. L. Merritt
1986, Ground Water (24) 516-529
Numerical modeling techniques are used to examine the hydrogeologic, design, and management factors governing the recovery efficiency of subsurface fresh-water storage. The modeling approach permitted many combinations of conditions to be studied. A sensitivity analysis was used that consisted of varying certain parameters while keeping constant as many other parameters...
Feeding activity, rate of consumption, daily ration, and prey selection of major predators in John Day Reservoir - Section II, predation control measures
D.E. Palmer, H.C. Hansel, J.M. Beyer, S.C. Vigg, W. T. Yasutake, P.T. Lofy, S.D. Duke, M.J. Parsley, M.G. Mesa, L.A. Prendergast, R. Burkhardt, C. Burley, D.W. Eib, T.P. Poe
1986, Report
No abstract available ...
Paleomagnetism of the Tertiary Clarno Formation of central Oregon and its significance for the tectonic history of the Pacific Northwest
C. Sherman Gromme, Myrl E. Beck Jr., Ray E. Wells, David C. Engebretson
1986, Journal of Geophysical Research B: Solid Earth (91) 14089-14103
The Clarno Formation, a mostly Eocene and partly early Oligocene sequence of andesitic lavas and volcaniclastic rocks, is the oldest Tertiary formation exposed in north central Oregon. Remanent magnetization directions at 46 sites in the lavas provide a paleomagnetic pole at 84°N, 278°E with a 95% confidence cone of 7°....
Depth distribution, diet, and overwinter growth of lake trout (Salvelinus namaycush) in southeastern Lake Michigan sampled in December 1981 and March 1982
Gary W. Eck, LaRue Wells
1986, Journal of Great Lakes Research (12) 263-269
Lake trout were collected in graded-mesh gill nets and forage fishes were collected in trawls in mid December 1981 and late March 1982. The length ranges of 317 lake trout caught in December and 138 in March were 280–767 and 286–857...
Preliminary estimates of loss of juvenile anadromous salmonids to predators in John Day Reservoir and development of a predation model
B.E. Reiman, R.C. Beamesderfer, A.A. Nigro, S.C. Vigg, H.C. Hansel, D.E. Palmer
1986, Report
No abstract available ...
Minerals, lands, and geology for the common defence and general welfare, Volume 3, 1904-1939 : A history of geology in relation to the development of public-land, federal-science, and mapping policies and the development of mineral resources in the United States from the 25th to the 60th year of the U.S. Geological Survey
Mary C. Rabbitt
1986, Book
Mrs. Rabbitt's third volume covers the years 1904 to 1939, from the beginning of the conservation movement under Theodore Roosevelt to the beginning of World War II. From a national perspective, these were years of great development and change in the use of energy, trouble in the coal industry, and...
What won't Turnstones eat?
Robert E. Gill Jr.
1986, British Birds (79) 402-403
The Turnstone Arenaria interpres probably has one of the most varied diets of any wader species. Besides the 'normal' foods taken (see, e.g., Prater 1972, Nettleship 1973, Jones 1975), a considerable variety of 'unusual' foods and feeding behaviours has also been reported. Items taken include soap, gull excrement, dog food,...
