Gas hydrates (clathrates) causing pore-water freshening and oxygen isotope fractionation in deep-water sedimentary sections of terrigenous continental margins
R. Hesse, W.E. Harrison
1981, Earth and Planetary Science Letters (55) 453-462
The occurrence of gas hydrates in deep-water sections of the continental margins predicted from anomalous acoustic reflectors on seismic profiles has been confirmed by recent deep-sea drilling results. On the Pacific continental slope off Guatemala gas hydrates were brought up for...
Reactor-released radionuclides in Susquehanna River sediments
C.R. Olsen, I.L. Larsen, N.H. Cutshall, J.F. Donoghue, O.P. Bricker, H.J. Simpson
1981, Nature (294) 242-245
Three Mile Island (TMI) and Peach Bottom (PB) reactors have introduced 137Cs, 134Cs, 60Co, 58Co and several other anthropogenic radionuclides into the lower Susquehanna River. Here we present the release history for these nuclides (Table 1) and radionuclide concentration data (Table 2) for sediment samples collected in the river and...
Key to trematodes reported in waterfowl
Malcolm Edwin McDonald
1981, Resource Publication 142
This key is the second in a series for identification of the helminths reported in waterfowl (Family Anatidae, Order Anseriformes). The first was a key to nematodes (McDonald 1974). The trematodes show the greatest variety of forms among the helminth parasites of waterfowl, including over half of all species reported; sometimes...
Spatial variation in transferrin allele frequencies among herds of feral donkeys in Death Valley National Monument, California
J.G. Blake, C. L. Douglas, L.F. Thompson
1981, Journal of Mammalogy (62) 58-63
Serum proteins were studied to clarify interrelationships of seemingly disjunct herds of feral donkeys (Equus asinus) in the mountains of Death Valley National Monument, California. Sera of 162 donkeys from five localities in the Panamint Mountains were examined by starch-gel electrophoresis to assess polymorphic variation in transferrins. Four homozygous...
Pb210 geochronology and trace metal concentrations of sediments from Upper Klamath Lake and Lake Euwana, Oregon.
E.A. Martin, C. A. Rice
1981, Northwest Science (55) 269-280
Rates of sedimentation calculated from analyses of 210Pb activities in cores from two shallow lakes whose mean depths are 2.4m, Upper Klamath Lake and Lake Euwana (Klamath County, Oregon), indicate that they are filling at approximately 3.0mm/yr. Average sedimentation rates for compaction-corrected cores range from 0.9mm/yr to 8.5mm/yr or from...
Compilation of hydrologic data for the Edwards Aquifer, San Antonio area, Texas, 1934-79
R.D. Reeves, R.W. Maclay, K. C. Grimm, M.F. Davis
1981, Edwards Underground Water District Bulletin 39
No abstract available....
Geohydrologic reconnaissance of Lake Mead National Recreation Area: Las Vegas Wash to Opal Mountain, Nevada
R. L. Laney
1981, Open-File Report 82-115
The study is a geohydrologic reconnaissance of about 170 square miles in the Lake Mead National Recreation Area from Las Vegas Wash to Opal Mountain, Nevada. The study is one of a series that describes the geohydrology of the recreation area and that indentifies areas where water supplies can be...
Significant results from using earth observation satellites for mineral and energy resource exploration
William D. Carter
1981, Advances in Space Research (1) 261-269
A large number of Earth-observation satellites orbit our world several times each day, providing new information about the land and sea surfaces and the overlying thin layer of atmosphere that makes our planet unique. Meteorological satellites have had the longest history of experimental use and most are now considered operational....
Mesurol as a bird repellent on wine grapes in Oregon and California
R. L. Hothem, D. F. Mott, R. W. DeHaven, J. L. Guarino
1981, American Journal of Enology and Viticulture (32) 150-154
Field tests were conducted in California and Oregon from July to October 1978 to evaluate the effectiveness of Mesurol as a repellent to reduce bird damage to ripening wine grapes. A block of vines composed of two similar, adjacent plots was delineated at each of 20 vineyards. One randomly...
Hydromythology and ethnohydrology in the New World
William Back
1981, Water Resources Research (17) 257-287
From mythology, archeology, and chronicles of early explorers we can learn how early Americans viewed the cause and effect relations of hydrologic phenomena. Hopes and fears are the basis of religion, and it was through religion that water management was first practiced. Early people used their water resources to develop...
Determination of selenium at trace levels in geologic materials by energy-dispersive X-ray fluorescence spectrometry
J.S. Wahlberg
1981, Chemical Geology (33) 155-161
Low levels of selenium (0.1-500 ppm) in both organic and inorganic geologic materials can be semiquantitatively measured by isolating Se as a thin film for presentation to an energy-dispersive X-ray fluorescence spectrometer. Suitably pulverized samples are first digested by fusing with a mixture of Na2CO3 and Na2O2. The fusion cake...
Anomalous chemical changes in well waters and possible relation to earthquakes
Chi-Yu King, William C. Evans, T. Presser, R.H. Husk
1981, Geophysical Research Letters (8) 425-428
Water level, temperature, salinity, electric conductivity, and pH have been measured periodically for several years at three water wells located along a 17-km segment of the San Andreas fault between San Juan Bautista and Cienega Winery in central California. Water samples were collected at the same...
Comparison of automated segmented-flow and discrete analyzers for the determination of nutrients in water
V.C. Marti, D.R. Hale
1981, Environmental Science & Technology (15) 711-713
Water samples with specific conductances ranging from 66 to 6950 ??mho/cm at 25 ??C were analyzed for ammonia-N (NH3-N), nitrate plus nitrite-N (NO3 + NO2-N), nitrite-N (NO2-N), and phosphate-P (PO4-P) by using both a "segmented-flow" analyzer and a "discrete" analyzer. Plots of the discrete vs. the segmented-flow results showed linear...
Manganese cycles and the origin of manganese nodules, Oneida Lake, New York, U.S.A.
W.E. Dean, W.S. Moore, K.H. Nealson
1981, Chemical Geology (34) 53-64
Oneida Lake is a large shallow lake in central New York that is characterized by high algal productivity and concentrated deposits of freshwater manganese nodules. Budgets for Mn in the lake and its tributaries show a net loss of 23 metric tons of manganese within the lake per year with...
Reduction of matrix interferences in furnace atomic absorption with the L'vov Platform
M. L. Kaiser, S. R. Koirtyohann, E. J. Hinderberger, Howard E. Taylor
1981, Spectrochimica Acta Part B: Atomic Spectroscopy (36) 773-783
Use of a modified L'vov Platform and ammonium phosphate as a matrix modifier greatly reduced matrix interferences in a commercial Massmann-type atomic absorption furnace. Platforms were readily fabricated from furnace tubes and, once positioned in the furnace, caused no inconvenience in operation. Two volatile elements (Pb, Cd), two of intermediate...
Laser fluorometric analysis of plants for uranium exploration
T. F. Harms, F. N. Ward, J. A. Erdman
1981, Journal of Geochemical Exploration (15) 617-623
A preliminary test of biogeochemical exploration for locating uranium occurrences in the Marfa Basin, Texas, was conducted in 1978. Only 6 of 74 plant samples (mostly catclaw mimosa, Mimosa biuncifera) contained uranium in amounts above the detection limit (0.4 ppm in the ash) of the conventional fluorometric method. The samples were...
Seepage study of the Sevier River and the Central Utah, McIntyre, and Leamington Canals, Juab and Millard Counties, Utah
L. R. Herbert, R.W. Cruff, Walter F. Holmes
1981, Open-File Report 81-820
A study of the gains or losses of the Sevier River and the Central Utah, McIntyre, and Leamington Canals in the Leamington area, in Juab and Millard Counties, Utah, was made to determine changes in those reaches. Three to seven sets of seepage measurements made during 1980 were used in...
Estimation of impervious-area washoff parameters
William M. Alley
1981, Water Resources Research (17) 1161-1166
In recent years many models have been developed which simulate the quality of rainfall runoff from urban areas. Common to many of these models is the use of an exponential washoff equation. This washoff equation is often modified by an availability equation to account for the effects of runoff intensity...
Estimation of accumulation parameters for urban runoff quality modeling
William M. Alley, Peter E. Smith
1981, Water Resources Research (17) 1657-1664
Many recently developed watershed models utilize accumulation and washoff equations to simulate the quality of runofffrom urban impervious areas. These models often have been calibrated by trial and error and with little understanding of model sensitivity to the various parameters. Methodologies for estimating best fit values of the washoff parameters...
Comprehensive approach to preparative isolation and fractionation of dissolved organic carbon from natural waters and wastewaters
J.A. Leenheer
1981, Environmental Science & Technology (15) 578-587
No abstract available....
Lithology, reservoir properties, and burial history of portion of Gammon Shale (Cretaceous), southwestern North Dakota
D. L. Gautier
1981, American Association of Petroleum Geologists Bulletin (65) 1146-1159
In the northern Great Plains, large quantities of biogenic methane are contained at shallow depths in Cretaceous marine mudstones. The Gammon Shale and equivalents of the Milk River Formation in Canada, which comprise most sediments deposited offshore during the Eagle-Telegraph Creek regression, are typical of such gas-bearing rocks. At Little...
Use of 35-mm color aerial photography to acquire mallard sex ratio data
Edgar L. Ferguson, Dennis G. Jorde, John L. Sease
1981, Photogrammetric Engineering and Remote Sensing (47) 823-827
A conventional 35-mm camera equipped with an f2.8 135-mm lens and ASA 64 color film was used to acquire sex ratio data on mallards (Anas platyrhynchos) wintering in the Platte River Valley of south-central Nebraska. Prelight focusing for a distance of 30.5 metres and setting of shutter speed at 1/2000...
Mercury in the muscle tissue of fish from three northern Maine lakes
J.J. Akielaszek, T.A. Haines
1981, Bulletin of Environmental Contamination and Toxicology (27) 201-208
There is evidence that fish in Canadian wilderness areas exhibit elevated mercury levels because of the oligotrophic nature of the lakes they inhabit (BROUZES et al. 1977). D'ITRI et al. (1971) reported higher levels of mercury in trout from oligotrophic waters than in trout from eutrophic waters in unpolluted areas....
Ground-water resources of Billings, Golden Valley, and Slope Counties, North Dakota
L. O. Anna
1981, North Dakota Geological Survey Bulletin 76
No abstract available....
Environmental Assessment: Activities Proposed by the San Francisco Clean Water Program at Ocean Beach, Golden Gate National Recreation Area
N. Hornor, J. A. Howell, K. Wong
1981, Report
No abstract available at this time...
