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Page 1835, results 45851 - 45875

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Origins of water and solutes in and north of the Norris-Mammoth Corridor, Yellowstone National Park
Yousif Kharaka, Robert Mariner, Gil Ambats, William Evans, Lloyd White, Thomas Bullen, B. Mack Kennedy
1990, Conference Paper, Transactions - Geothermal Resources Council
This study was initiated to investigate the impacts of geothermal development in the Corwin Springs Known Geothermal Resources Area (KGRA) on the hydrothermal features of Yellowstone National Park. To determine possible hydrogeochemical connections, we used the diagnostic stable and radioactive isotopes of several elements, and the chemical and gas compositions...
Removal of benzocaine from water by filtration with activated carbon
G.E. Howe, T.D. Bills, L. L. Marking
1990, Progressive Fish-Culturist (52) 32-35
Benzocaine is a promising candidate for registration with the U.S. Food and Drug Administration for use as an anesthetic in fish culture, management, and research. A method for the removal of benzocaine from hatchery effluents could speed registration of this drug by eliminating requirements for data on its residues, tolerances,...
Mercury accumulation in yellow perch in Wisconsin seepage lakes: Relation to lake characteristics
W.G. Cope, J.G. Wiener, R.G. Rada
1990, Environmental Toxicology and Chemistry (9) 931-940
We studied relations between lacustrine characteristics and the total mercury (Hg) content of calendar age-2 yellow perch (Perca flavescens) in 10 seepage lakes in north-central Wisconsin. Mean concentrations and burdens (masses) of Hg in whole perch varied widely among lakes, were negatively correlated with lake pH and were positively correlated...
Enhanced bioaccumulation of mercury, cadmium and lead in low-alkalinity waters: An emerging regional environmental problem
J.G. Wiener, P.M. Stokes
1990, Environmental Toxicology and Chemistry (9) 821-823
During the past decade or so, observations of high mercury concentrations in fish have renewed concerns and mercury, primarily in two groups of fresh waters: low-alkalinity lakes (the topic of this editorial) and newly created impoundments. The recent focus on the chemistry and biota of low-alkalinity (< 50...
Simulated effects of climatic change on runoff and drought in the Delaware River Basin
Mark A. Ayers, Gary D. Tasker, David M. Wolock, Gregory J. McCabe, Lauren E. Hay
Singh Udai P.Helweg Otto J., editor(s)
1990, Conference Paper, Supplying Water and Saving the Environment for Six Billion People
Various projection of climatic change were applied to watershed models of the Delaware River basin. Simulations indicate that a warming could reduce annual runoff by as much as 25 percent if current precipitation patterns continue. Simulations indicate that the largest changes in basin drought are in response to relatively small...
Immediate impact of the 'Exxon Valdez' oil spill on marine birds
John F. Piatt, Calvin J. Lensink, William Butler, Marshal Kendziorek, David R. Nysewander
1990, The Auk (107) 387-397
On 24 March 1989, the oil tanker 'Exxon Valdez' spilled 260,000 barrels of crude oil in Prince William Sound, Alaska. Oil eventually drifted over $30,000\ {\rm km}^{2}$ of coastal and offshore waters occupied by approximately one million marine birds. More than 30,000 dead birds of 90 species were retrieved from...
Geohydrology of the near-surface unsaturated zone adjacent to the disposal site for low-level radioactive waste near Beatty, Nevada: A section in Safe disposal of radionuclides in low-level radioactive-waste repository sites; Low-level radioactive-waste disposal workshop, U.S. Geological Survey, July 11-16, 1987, Big Bear Lake, Calif., Proceedings (Circular 1036)
Jeffrey M. Fisher
Marion S. Bedinger, Peter R. Stevens, editor(s)
1990, Conference Paper, Safe disposal of radionuclides in low-level radioactive-waste repository sites; Low-level radioactive-waste disposal workshop, U.S. Geological Survey, July 11-16, 1987, Big Bear Lake, Calif., Proceedings (Circular 1036)
Shallow-land burial in arid areas is considered the best method for isolating low-level radioactive waste from the environment (Nichols and Goode, this report; Mercer and others, 1983). A major threat to waste isolation in shallow trenches is ground-water percolation. Repository sites in arid areas are believed to minimize the risk...
Management implications of a model of predation by a resident fish on juvenile salmonids migrating through a Columbia River reservoir
Raymond C. Beamesderfer, Bruce E. Rieman, Lewis J. Bledsoe, Steven Vigg
1990, North American Journal of Fisheries Management (10) 290-304
We constructed a model ofpredation by northern squawfish Ptychocheilus oregonensis on juvenile salmonids migrating through John Day Reservoir. The model predicts salmonid survival as a function of number and distribution of northern squawfish, number and timing of juvenile salmonids entering the reservoir, salmonid residence time, water temperature, and flow. The...
Spatial and temporal variation in proportional stock density and relative weight of smallmouth bass in a reservoir
Matthew G. Mesa, S.D. Duke, David L. Ward
1990, Journal of Freshwater Ecology (5) 323-339
Population data for smallmouth bass Micropterus dolomieui in 20,235 ha John Day Reservoir on the Columbia River were used to (1) determine whether Proportional Stock Density (PSD) and Relative Weight (Wr) varied spatially and temporally in two areas of the reservoir with established smallmouth bass fisheries; (2) explore possible...
Extra-pair copulations in Black Brant
Daniel Welsh, James S. Sedinger
1990, The Condor (92) 242-244
Monogamy is the primary mating system among waterfowl, but extra-pair copulations (EPCs) have been documented in at least 39 species (McKinney et al. 1983). Extra-pair copulations occur in most Holarctic species of dabbling ducks (Anas spp.), but have been recorded in only three species of geese: Lesser Snow Geese, Chen...
International decade for natural disaster reduction
W. W. Hays
1990, Earthquakes & Volcanoes (USGS) (22) 33-39
Throughout history, humanity has found itself in conflict with naturally occurring events of geologic, hydrologic, and atmospheric origin. this conflict has been demonstrated repeatedly when people build urban centers at the water's edge, in or near active fault systems capable of generating earthquakes, on steep slopes, near active volcanoes, or...
Concentrations of boron, molybdenum, and selenium in chinook salmon
Steven J. Hamilton, Raymond H. Wiedmeyer
1990, Transactions of the American Fisheries Society (119) 500-510
The concentrations of boron, molybdenum, and selenium in young chinook salmon Oncorhynchus tshawytscha were determined in three partial life cycle chronic toxicity studies. In each study, fish were exposed to a mixture of boron, molybdenum, selenate, and selenite in the proportions found in subsurface agricultural drainage water in the basin...
Remarkable invasion of San Francisco Bay (California, USA) by the Asian clam Potamocorbula amurensis. II. Displacement of a former community
Frederic H. Nichols, Janet K. Thompson, Laurence E. Schemel
1990, Marine Ecology Progress Series (66) 95-101
Long-term macrobenthic sampling at a site in northern San Francisco Bay has provided an unusual opportunity for documenting the time course of an invasion by a recently introduced Asian clam Potamocorbula arnurensis. Between 1977, when sampling began, and 1986, when the new clam was first discovered, the benthic community varied...
Multichannel seismic reflection surveys over the Antarctic continental margin relevant to petroleum resource studies
John C. Behrendt
1990, Book chapter, Antarctica as an exploration frontier-hydrocarbon potential, geology, and hazards
More than 100,000 km of marine multichannel seismic profiles have been acquired over the continental margin of Antarctica since 1976 by scientific research programs of Australia, Brazil, France, Italy, Japan, Norway, Poland, United Kingdom, United States, U.S.S.R. and West Germany. Although scientific results are reported for most of these data,...
Hydrogeochemistry and stable isotopes of ground and surface waters from two adjacent closed basins, Atacama Desert, northern Chile
Charles N. Alpers, Donald O. Whittemore
1990, Applied Geochemistry (5) 719-734
The geochemistry and stable isotopes of groundwaters, surface waters, and precipitation indicate different sources of some dissolved constituents, but a common source of recharge and other constituents in two adjacent closed basins in the Atacama Desert region of northern Chile (24°15′–24°45′S). Waters from artesian wells, trenches, and ephemeral streams in...
Status of the greater flamingo in Haiti
J. A. Ottenwalder, C.A. Woods, G. B. Rathbun, J.B. Thorbjarnarson
1990, Colonial Waterbirds (13) 115-123
Although flamingos in Haiti can still be found in most areas of their historical range, survey results indicate that numbers have declined drastically over the last 50 years. The coastal mangrove lagoons between Grand Saline and Gonaïves, the inland lakes of Étang Saumâtre and Trou Caïman, and Ile de la...
Genesis of the tabular-type vanadium-uranium deposits of the Henry Basin, Utah
H. R. Northrop, M. B. Goldhaber, Gary P. Landis, J.W. Unruh, Richard J. Reynolds, John A. Campbell, Richard B. Wanty, Richard I. Grauch, Gene Whitney, Robert O. Rye
1990, Economic Geology (85) 215-269
Tabular-type vanadium-uranium deposits occur in fluvial sandstones of the Salt Wash Member of the Morrison Formation of Late Jurassic age The mineralized intervals and the weakly mineralized lateral extensions are bounded both above and below by zones rich in dolomite cement. Carbon isotope values of dolomite cements indicate that at...
Faults of the central part of the Lewis and Clark line and fragmentation of the Late Cretaceous foreland basin in west-central Montana
C. A. Wallace, D. J. Lidke, R. G. Schmidt
1990, Geological Society of America Bulletin (102) 1021-1037
The Lewis and Clark line is a prominent zone of strike-slip, dip-slip, and oblique-slip faults that extends from near Wallace, Idaho, to east of Helena, Montana. Faults of this zone have been intermittently active from Middle Proterozoic to Holocene time, and because of numerous tectonic overprints, controversy continues about displacement...
Discharge rates of fluid and heat by thermal springs of the Cascade Range, Washington, Oregon, and northern California
Robert H. Mariner, T. S. Presser, William C. Evans, M.K.W. Pringle
1990, Journal of Geophysical Research (95) 19517-19531
Fluid and heat discharge rates of thermal springs of the Cascade Range have been determined using the chloride inventory method. Discharge rates of thermal spring groups range from 1 to 120 L s−1. Most of the fluid (50%) and heat (61%) are discharged from two hot spring groups in northern...
A multilayered sharp interface model of coupled freshwater and saltwater flow in coastal systems: Model development and application
Hedeff I. Essaid
1990, Water Resources Research (26) 1431-1454
A quasi three-dimensional, finite difference model, that simulates freshwater and saltwater flow separated by a sharp interface, has been developed to study layered coastal aquifer systems. The model allows for regional simulation of coastal groundwater conditions, including the effects of saltwater dynamics on the freshwater system. Vertically integrated freshwater and...