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Page 2103, results 52551 - 52575

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Not all publications have extents, not all extents are completely accurate
Rhodamine-WT dye losses in a mountain stream environment
Kenneth E. Bencala, Ronald E. Rathburn, Alan P. Jackman, Vance C. Kennedy, Gary W. Zellweger, Ronald J. Avanzino
1983, Journal of the American Water Resources Association (19) 943-950
A significant fraction of rhodamine WT dye was lost during a short term multitracer injection experiment in a mountain stream environment. The conservative anion chloride and the sorbing cation lithium were concurrently injected. In-stream rhodamine WT concentrations were as low as 45 percent of that expected, based on chloride data....
The relationship of joints and stream drainage in flat-lying rocks of south-central New York and northern Pennsylvania
H. A. Pohn
1983, Zeitschrift fur Geomorphologie (27) 375-384
Examination of the relationship of joints to stream development shows that the oft-cited development of streams parallel to joint directions does not, in general, apply in south-central New York and adjacent northern Pennsylvania. Streams whose courses are oblique to the joint directions (joint-oblique valleys) tend to erode...
Measuring water surface and streambed elevation changes with the acoustic velocity metering system
Antonius Laenen
1983, Water Resources Research (19) 1317-1322
Acoustic velocity metering systems used to measure the water velocity along a diagonal path across a stream can also be used to measure stage and streambed changes. Underwater acoustic transmissions reflected from the water surface can accurately measure depth above transducers. Similarly, signals reflected from the streambed can indicate streambed...
Evaluation of thematic mapper data for natural resource assessment
R. H. Haas, F. A. Waltz
1983, Conference Paper, Pecora VIII Symposium
The U.S. Geological Survey EROS Data Center evaluated the utility of Landsat Thematic Mapper (TM) date for natural resource assessment, emphasizing manual interpretation and digital classification of the data for U.S. Department of the Interior applications. Substantially more information was derived from TM data than from Landsat Multispectral Scanner...
U.S. Geological Survey land remote sensing activities
Doyle G. Frederick
1983, Pecora VIII Symposium 28-30
The U.S. Geological Survey (USGS) and the Department of the Interior (DOI) were among the earliest to recognize the potential applications of satellite land remote sensing for management of the country's land and water resources…not only as a user but also as a program participant responsible for final data processing,...
Fish abundance and population stability in a reservoir tailwater and an unregulated headwater stream
K.E. Jacobs, W.D. Swink
1983, North American Journal of Fisheries Management (3) 395-402
Fish abundance and population stability were compared in the tailwater and in an unregulated tributary of Barren River Lake, a flood control reservoir in south central Kentucky. Fish abundance was greater in the tailwater near the dam and was dominated by three species common in the reservoir: gizzard shad (Dorosoma...
Transport of reacting solutes in porous media: Relation between mathematical nature of problem formulation and chemical nature of reactions
Jacob Rubin
1983, Water Resources Research (19) 1231-1252
Examples involving six broad reaction classes show that the nature of transport-affecting chemistry may have a profound effect on the mathematical character of solute transport problem formulation. Substantive mathematical diversity among such formulations is brought about principally by reaction properties that determine whether (1) the reaction can be regarded as...
Gas emissions and the eruptions of Mount St. Helens through 1982
T. Casadevall, W. Rose, T. Gerlach, L. P. Greenland, J. Ewert, R. Wunderman, R. Symonds
1983, Science (221) 1383-1385
The monitoring of gas emissions from Mount St. Helens includes daily airborne measurements of sulfur dioxide in the volcanic plume and monthly sampling of gases from crater fumaroles. The composition of the fumarolic gases has changed slightly since 1980: the water content increased from 90 to 98 percent, and the...
Reproduction by the endangered cui-ui in the lower Truckee River
G.G. Scoppettone, Gary Wedemeyer, M. Coleman, H. Burge
1983, Transactions of the American Fisheries Society (112) 788-793
Adult spawning behavior and emigration of larvae of the endangered cui-ui Chasmistes cujus were studied in a natural side channel of the lower Truckee River. External radio-tags placed on eight apparently did not affect spawning behavior. Cui-uis spawned in clusters of two to seven fish; usually a single female was...
Results of an adaptive environmental assessment modeling workshop concerning potential impacts of drilling muds and cuttings on the marine environment
Gregor T. Auble, Austin K. Andrews, Richard A. Ellison, David B. Hamilton, Richard A. Johnson, James E. Roelle, David R. Marmorek
1983, Report
Drilling fluids or "muds" are essential components of modern drilling operations. They provide integrity for the well bore, a medium for removal of formation cuttings, and lubrication and cooling of the drill bit and pipe. The modeling workshop described in this report was conducted September 14-18, 1981 in Gulf Breeze,...
Rapid method for measuring rotenone in water at piscicidal concentrations
V. K. Dawson, P.D. Harman, D.P. Schultz, J. L. Allen
1983, Transactions of the American Fisheries Society (112) 725-727
A high‐performance liquid chromatography (HPLC) procedure that is rapid, specific, and sensitive (limit of detection <0.005 mg/liter) was developed for monitoring application and degradation rates of rotenone. For analysis, a water sample is buffered to pH 5 and injected through a Sep Pak(R) C18 disposable cartridge. The cartridge adsorbs and retains...
Bathyal ostracodes from the Florida-Hatteras slope, the Straits of Florida, and the Blake Plateau
Thomas M. Cronin
1983, Marine Micropaleontology (8) 89-119
Epibathyal ostracodes from the Florida-Hatteras slope, the Blake Plateau and the Straits of Florida were studied to determine the relationship of numerous genera and species to bottom-water environmental conditions such as dissolved oxygen and bottom-water temperatures. From a total of 100 samples, 44 samples evenly distributed between 200 and 1100...
Neptunium and americium speciation in selected basalt, granite, shale, and tuff ground waters
J.M. Cleveland, T.F. Rees, K.L. Nash
1983, Science (221) 271-273
Neptunium and americium are relatively insoluble in ground waters containing high sulfate concentrations, particularly at 90°C. The insoluble neptunium species is Np(IV); hence reducing waters should enhance its formation. Americium can exist only in the trivalent state under these conditions, and its solubility also should be representative...
Mechanism and ecological significance of sperm storage in the Northern Fulmar with reference to its occurrence in other birds
Scott A. Hatch
1983, The Auk (100) 593-600
Sperm-storage glands were found in the uterovaginal (UV) region of the oviduct in Northern Fulmars (Fulmarus glacialis), Horned Puffins (Fratercula corniculata), and Leach's Storm-Petrels (Oceanodroma leucorhoa) collected before or shortly after egg laying. Previously described only in domestic Galliformes, UV sperm-storage glands may prove to be a common feature of...
Jiddah and vicinity, ... Saudi Arabia : 1:25,000-scale topographic maps
Saudi Arabia. Deputy Ministry for Mineral Resources, Water Resources Division, U.S. Geological Survey
1983, Report
Contents: SP-2B2. Al Kurāʻ SW --SP-3B2. Al Kurāʻ --SP-4B2. ʻUsfān SW --SP-5B2. Ra's Abḩur --SP-6B2. Buraymān --SP-7B2. Jabal Ţanḑub NW --SP-8B2. Buraymān SW --SP-9B2. Jiddah north --SP-10B2. Jabal Ţanḑub --SP-11B2. Jiddah south --SP-12B2. Jabal al Ḩamrāʼ --SP-13B2. Jazīrat Ghurāb --<br...
Solubility of crude oil in methane as a function of pressure and temperature
Leigh C. Price, L.M. Wenger, T. Ging, C.W. Blount
1983, Organic Geochemistry (4) 201-221
The solubility of a 44° API (0.806 sp. gr.) whole crude oil has been measured in methane with water present at temperatures of 50 to 250°C and pressures of 740 to 14,852 psi, as have the solubilities of two high molecular weight petroleum distillation fractions at temperatures of 50 to...
Ground-water contamination by organic bases derived from coal-tar wastes
Wilfred E. Pereira, Colleen E. Rostad, John R. Garbarino, Marc F. Hult
1983, Environmental Toxicology and Chemistry (2) 283-294
A fluid sample from a shallow aquifer contaminated by coal-tar wastes was analyzed for organic bases. The sample consisted of a mixture of aqueous and oily-tar phases. The phases were separated by centrifugation and filtration. Organic bases were isolated from each phase by pH adjustment and solvent extraction. Organic bases...
Aspects of food finding by wintering Bald Eagles
Susan K. Knight, Richard L. Knight
1983, The Auk (100) 477-484
We examined three aspects of food location by Bald Eagles (Haliaeetus leucocephalus) wintering along the Nooksack River, Washington. First, eagles used intra- and interspecific local enhancement to locate food. Second, the time that eagles spent aerially searching for food, as indicated by the percentage of eagles flying or soaring, was...
Crassulacean acid metabolism in the seasonally submerged aquatic Isoetes howellii
Jon E. Keeley
1983, Oecologia (58) 57-62
Evidence to date is consistent with the hypothesis that the submerged aquatic Isoetes howellii Engelmann possesses crassulacean acid metabolism. Quantitative 14C uptake studies indicate that CO2 assimilation in both the light and dark are functions of pH and total inorganic carbon level. In both the light and dark, maximum uptake rates in 0.6 mM...
Crassulacean acid metabolism in Isoetes bolanderi in high elevation oligotrophic lakes
Jon E. Keeley, C.M. Walker, R.P. Mathews
1983, Oecologia (58) 63-69
Isoetes bolanderi dominates the littoral flora of Siesta (elevation 2,440 m) and Ellery (2,905 m) lakes in the Sierra Nevada Range of California, USA. Both lakes are sparsely vegetated and I. bolanderi maintained aboveground oven dry weight of 30–50 m−22 through most of the 1981 summer growing season. Plants at the higher elevation Ellery...
Biochronology and paleoclimatic implications of Middle Eocene to Oligocene planktic foraminiferal faunas
Gerta Keller
1983, Marine Micropaleontology (7) 463-486
Planktic foraminiferal assemblages have been analyzed quantitatively in six DSDP sites in the Atlantic (Site 363), Pacific (Sites 292, 77B, 277), and Indian Ocean (Sites 219, 253) in order to determine the nature of the faunal turnover during Middle Eocene to Oligocene time. Biostratigraphic ranges of taxa and abundance distributions...
Comparison of stable isotope reference samples
Tyler B. Coplen, Carol Kendall, Jessica A. Hopple
1983, Nature (302) 236-238
Use of light stable isotope ratio measurements has proliferated in the past decade. The need for procuring additional stable isotope reference materials was recognized at an International Atomic Energy Agency (IAEA) consultants' meeting convened in 19761. This group recommended acquisition of two carbonates, two carbon dioxide samples, a biotite, a...
Accumulation, sublethal effects, and safe concentration of a refined oil as evaluated with cutthroat trout
D. F. Woodward, R. G. Riley, C. E. Smith
1983, Archives of Environmental Contamination and Toxicology (12) 464
Cutthroat trout (Salmo clarki) were exposed for 90 days in the laboratory to a refined oil collected from the North Platte River at a seepage site below the American Oil Company refinery at Casper, Wyoming. Fish were exposed to five concentrations and a control, and seven biological responses (survival, growth,...
Temporal accumulation of organochlorine pesticides in shorebirds wintering on the south Texas coast, 1979-80
Donald H. White, Christine A. Mitchell, T. Earl Kaiser
1983, Archives of Environmental Contamination and Toxicology (12) 241-245
Organochlorine pesticide residues were determined in 168 shorebirds of three species collected at approximate bimonthly intervals during the fall and winter months of 1979–80 near Port Mansfield on the south Texas coast. The study was conducted to determine if shorebirds wintering on mudflats at the outlets of agricultural drains in...
Platte River Forum for the Future: workshop model documentation
1983, Report
The Platte River Forum for the Future (PRFF) is an effort by the Nebraska Natural Resources Commission (NNRC) to bring together representatives of interests and agencies concerned with management of the Platte River and, assisted by various computer technologies, to reach some degree of agreement on the “best uses” of...