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Page 4861, results 121501 - 121525

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Correlations between stream sulphate and regional SO2 emissions
R. A. Smith, R. B. Alexander
1986, Nature (322) 722-724
The relationship between atmospheric SO2 emissions and stream and lake acidification has been difficult to quantify, largely because of the limitations of sulphur deposition measurements. Precipitation sulphate (SO4) records are mostly <5 yr in length1 and do not account for dry sulphur deposition2. Moreover, a variable fraction of wet- and dry-deposited sulphur...
Use of borehole neutron logs to estimate moisture content in the unsaturated zone of an alluvial aquifer
Vicente Quinones-Aponte, Ramon A. Carrasquillo
Ferdinand Quinones, A.V. Sanchez, H. Smith, editor(s)
1986, Conference Paper, Proceedings of the Third Caribbean Islands Water-Resources Congress
he neutron borehole logging tool was calibrated for the determination of moisture content in theunsaturated zone of an alluvial aquifer. A continuous core sample was collected to a depth of 15 ft from the unsaturated zone.Moisture content and other soil properties were determined by standard soil-laboratory techniques. The neutron logs profile was correlated...
Geophysical and geochemical investigations of aerial radiometric anomalies in the Tabuk formation, Kingdom of Saudi Arabia
James A. Pitkin, A. Curtis Huffman Jr., Saudi Arabia. Deputy Ministry for Mineral Resources, U.S. Geological Survey Saudi Arabia Mission
1986, Report
An interagency report prepared by the U.S. Geological Survey Saudi Arabian Mission for the Ministry of Petroleum and Mineral Resources, Kingdom of Saudi Arabia. The work on which this report was based was performed in accordance with a cooperative agreement between the U.S. Geological Survey and the Ministry of Petroleum...
Paleomagnetic evidence for the timing of collapse and resurgence of the Lake City Caldera, San Juan Mountains, Colorado
Richard L. Reynolds, Mark R. Hudson, Ken Hon
1986, Journal of Geophysical Research B: Solid Earth (91) 9599-9613
Rocks of the 23.1‐m.y.‐old Lake City caldera consist of the compositionally zoned Sunshine Peak Tuff, postcollapse intracaldera lava flows, and resurgent quartz syenite intrusions. Declinations of reversely magnetized (I = −45° to −75°) Sunshine Peak Tuff change from easterly (D = 93°–130°) throughout most of the tuff to southerly (D = 195°–207°) within...
Fecal bile acids of black-footed ferrets
Louise Richardson, M.K. Johnson, T. W. Clark, M.H. Schroder
1986, Great Basin Naturalist Memoirs (8) 141-144
Fecal bile acid characteristics have been used to identify scats to species of origin. Fecal bile acids in scats from 20 known black-footed ferrets ( Mustela nigripes ), 7 other known small carnivores, and 72 of unknown origin were analyzed to determine if this procedure could be used as a...
A budget for continental growth and denudation
D. G. Howell, R.W. Murray
1986, Science (233) 446-449
Oceanic crustal material on a global scale is re-created every 110 million years. From the data presented it is inferred that potential sialic material is formed at a rate of about 1.35 cubic kilometers per year, including hemipelagic volcanic sediments that accumulate at a rate of about 0.05 cubic kilometer...
Estimating ground-water influx to a portion of the Rio Grande de Manati River basin in Puerto Rico through the measurement of 222Rn
K. Kelly Ellins, Angel Roman-Mas, Roger W. Lee
Ferdinand Quinones, A.V. Sanchez, H. Smith, editor(s)
1986, Conference Paper, Proceedings of the Third Caribbean Islands Water-Resources Congress
Water has become a critical commodity in the Caribbean Region. In spite of a relative abundance of rainfall even on the smaller islands, the region is faced with severe seasonal shortages as well as increasing water quality problems. The supply of thewater needs in the area will become even more critical...
Voyager 2 in the Uranian system: Imaging science results
B.A. Smith, L.A. Soderblom, R. Beebe, D. Bliss, J. M. Boyce, A. Brahic, G.A. Briggs, R. H. Brown, S.A. Collins, A.F. Cook II, S.K. Croft, J.N. Cuzzi, G. E. Danielson, M. E. Davies, T.E. Dowling, D. Godfrey, C.J. Hansen, M. Camille Harris, G.E. Hunt, A.P. Ingersoll, T. V. Johnson, R.J. Krauss, H. Masursky, D. Morrison, Tobias Owen, J. B. Plescia, James B. Pollack, C.C. Porco, K. Rages, C. Sagan, E.M. Shoemaker, L.A. Sromovsky, C. Stoker, R.G. Strom, V.E. Suomi, S.P. Synnott, R.J. Terrile, P. Thomas, W.R. Thompson, J. Veverka
1986, Science (233) 43-64
Voyager 2 images of the southern hemisphere of Uranus indicate that submicrometersize haze particles and particles of a methane condensation cloud produce faint patterns in the atmosphere. The alignment of the cloud bands is similar to that of bands on Jupiter and Saturn, but the zonal winds are nearly opposite....
Marking fingerling striped bass and blue tilapia with coded wire tags and microtaggants
G. T. Klar, N. C. Parker
1986, North American Journal of Fisheries Management (6) 439-444
Fingerling striped bass (Morone saxatilis) of two year classes were tagged in four body locations with coded wire tags and on two locations with Microtaggants (laminated plastic particles containing layers of fluorescent and magnetic material). Retention of coded wire tags ranged from 33% for tags in the nose to 100%...
Changing landscapes and the cosmopolitism of the eastern Colorado avifauna
Fritz L. Knopf
1986, Wildlife Society Bulletin (14) 132-142
The avifauna of continental North America has changed dramatically since colonial times. Excessive hunting contributed, at least in part, to the extinction of birds such as the great auk (Pinguinus impennis) and passenger pigeon (Ectopistes migratorius), while more recently organochlorine insecticide residues have resulted in drastic reductions in numbers...
Population trends, reproductive success, and organochlorine chemical contaminants in waterbirds nesting in Galveston Bay, Texas
Kirke A. King, Alexander J. Krynitsky
1986, Archives of Environmental Contamination and Toxicology (15) 367-376
The effects of environmental contaminants on the reproductive success of olivaceous cormorants (Phalacrocorax olivaceus), laughing gulls (Larus atricilla), and black skimmers (Rhynchops niger) nesting in Galveston Bay, Texas were investigated from 1980 through 1982. Populations of cormorants and gulls have remained stable in recent years, but skimmer numbers may have...
Hydrogeochemistry of sulfide and arsenic-rich tailings and alluvium along Whitewood Creek, South Dakota (Part 1 of 3 parts)
F. M. M. Morel, J. Rouse, J. L. Schnoor, M. G. Wolman, J. A. Cherry
1986, Mineral & Energy Resources (29)
During 100 years prior to 1977, Whitewood Creek, SD, received about 1 billion tons of arsenic-rich and sulfide-mineral rich tailings from gold mining operations. A hydrogeochemical investigation conducted in 1983-84 focused on four local study areas on the flood plain where tailings deposits exist on top of moderately permeable alluvium....
Recent developments in hydrologic instrumentation
Vito J. Latkovich, James C. Futrell II
Douglas L. Kane, editor(s)
1986, American Water Resources Association Technical Publication Series 86-1
The programs of the U.S. Geological Survey require instrumentation for collecting and monitoring hydrologic data in cold regions. The availability of space-age materials and implementation of modern electronics and mechanics is making possible the recent developments of hydrologic instrumentation, especially in the area of measuring streamflow under ice cover. Material...
Blood chemistry and hematocrit of captive and wild canvasbacks
Matthew C. Perry, Holliday H. Obrecht III, Byron K. Williams, Wayne J. Kuenzel
1986, Journal of Wildlife Management (50) 435-441
Blood chemistry and packed cell volume (PCV) did not vary among groups of captive canvasbacks (Aythya valisineria) maintained ad libitum on 5 diets varying in metabolizable energy (ME) and protein. Ducks fed low quality diets increased their consumption so that all ducks were obtaining similar amounts of energy and protein....