Effects of sulfur dioxide emissions on stream chemistry in the western United States
K. Campbell, J.T. Turk
1988, Water Resources Research (24) 871-878
A 20-year record of water chemistry for seven headwater streams in the Rocky Mountain region of the western United States is compared to estimates of local and regional sulfur dioxide emissions for the same period. Emissions from smelters in the region comprise a significant part of sulfur dioxide emissions for...
Geologic evidence for a magma chamber beneath Newberry Volcano, Oregon
N. S. MacLeod, D. R. Sherrod
1988, Journal of Geophysical Research Solid Earth (93) 10067-10079
At Newberry Volcano, central Oregon, more than 0.5 m.y. of magmatic activity, including caldera collapse and renewed caldera-filling volcanism, has created a structural and thermal chimney that channels magma ascent. Holocene rhyolitic eruptions (1) have been confined mainly within the caldera in an area 5 km in diameter, (2) have...
Effectiveness of an urban runoff detention pond - Wetlands system
E.H. Martin
1988, Journal of Environmental Engineering (114) 810-827
The effectiveness of an urban detention system, composed of a detention pond and wetlands in series, in reducing constituent loads carried in runoff was determined. The detention pond was effective in reducing loads of suspended solids and suspended metals. Suspendedphase efficiencies for solids, lead, and zinc ranged between 42 and...
Seasonal occurrence of migrant whimbrels and bristle-thighed curlews on the Yukon-Kuskokwim Delta, Alaska
Colleen M. Handel, Christian P. Dau
1988, The Condor (90) 782-790
Migrant Whimbrels (Numenius phaeopus) and Bristle-thighed Curlews (N. tahitiensis) were recorded during five summers along coastal tundra of the Yukon-Kuskokwim Delta, Alaska. From June to September, 1975-1979, 358 flocks totalling 1,265 curlews were observed; an additional 54 flocks were identified by vocalization alone. Among the 359 flocks identified to species,...
On seismically induced pore pressure and settlement
Albert T.F. Chen
1988, Conference Paper, Geotechnical Special Publication
Two different approaches are used to estimate pore pressures and settlement in a 50-ft (15.2-m) sand deposit subjected to a variety of earthquake loadings. Although the two approaches seem consistent in predicting the occurrence of liquefaction, the results show that they are quite divergent in estimating pore-pressure build-ups and magnitude...
Contrasting serpentinization processes in the eastern Central Alps
D.J.M. Burkhard, J. R. O’Neil
1988, Contributions to Mineralogy and Petrology (99) 498-506
Stable isotope compositions have been determined for serpentinites from between Davos (Arosa-Platta nappe, Switzerland) and the Valmalenco (Italy). ??D and ??18O values (-120 to -60 and 6-10???, respectively) in the Arosa-Platta nappe indicate that serpentinization took place on the continent at relatively low temperatures in the presence of limited amounts...
MAGMIX: a basic program to calculate viscosities of interacting magmas of differing composition, temperature, and water content
T. P. Frost, J.R. Lindsay
1988, Computers & Geosciences (14) 213-228
MAGMIX is a BASIC program designed to predict viscosities at thermal equilibrium of interacting magmas of differing compositions, initial temperatures, crystallinities, crystal sizes, and water content for any mixing proportion between end members. From the viscosities of the end members at thermal equilibrium, it is possible to predict the styles...
Microbial oxidation of pyrrhotites in coal chars
K.W. Miller, J.B. Risatti
1988, Fuel (67) 1150-1154
The ability of Thiobacillus ferrooxidans to oxidize pyrrhotite minerals occurring in coal chars was investigated, to evaluate the feasibility of microbial char desulphurization. Bio-oxidation of pyrrhotites in chars produced by two different processes was demonstrated conclusively. Microbial removal of sulphur from a char and its parent coal proceeded at the rate of...
Some revisions to the stratigraphy and structure of the Connecticut Valley trough, eastern Vermont
Norman L. Hatch Jr.
1988, American Journal of Science (288) 1041-1059
No abstract available....
Petrology of ultramafic xenoliths from Loihi Seamount, Hawaii
D.A. Clague
1988, Journal of Petrology (29) 1161-1186
Ultramafic xenoliths were recovered in four alkalic lava flows from Loihi Seamount at depths between 2200 and 1400m. No xenolith bearing flows were sampled near the summit despite a concentrated dredge program. The flows, three of alkalic basalt and one of basanite, contain common olivine megacrysts and small xenoliths...
Coastal geomorphology of arctic Alaska
Peter W. Barnes, Stuart E. Rawlinson, Erk Reimnitz
1988, Technical Council on Cold Regions Engineering Monograph 3-30
The treeless, tundra-plain of northern Alaska merges with the Arctic Ocean along a coastal area characterized by low tundra bluffs, and sparse coastal and delta dunes. Coastal engineering projects that aggrade or degrade permafrost will alter the geomorphology and rates of coastal processes by changing coastal stability. Similarly, projects that...
Measurement, characterization, and prediction of strong ground motion
William Joyner, David M. Boore
1988, Conference Paper, Geotechnical Special Publication
A number of predictive relationships derived from regression analysis of strong-motion data are available for horizontal peak acceleration, velocity, and response spectral values. Theoretical prediction of ground motion calls for stochastic source models because source heterogeneities control the amplitude of ground motion at most, if not all, frequencies of engineering...
Radiolarian biostratigraphy of siliceous Eocene deposits in central California
J. Blueford
1988, Micropaleontology (34) 236-258
Abundant Eocene siliceous deposits in California are located in the San Joaquin and Sacramento valleys. The white shales to buff mudstones are characterized by radiolarians, diatoms, and silicoflagellates. Taxonomic descriptions and abundance data of key radiolarian species in existing monographs have limited biostratigraphic and paleoenvironmental interpretation. The California fauna is...
Thermal regime of the State 2-14 well, Salton Sea Scientific Drilling Project
J.H. Sass, S. S. Priest, L.E. Duda, C.C. Carson, J. D. Hendricks, L.C. Robison
1988, Journal of Geophysical Research Solid Earth (93) 12995-13004
Temperature logs were made repeatedly during breaks in drilling and both during and after flow tests in the Salton Sea Scientific Drilling Project well (State 2–14). The purpose of these logs was to assist in identifying zones of fluid loss or grain and to characterize reservoir temperatures. At the conclusion...
Fractional-step method for two-dimensional estuarine transport
Jerad D. Bales, Edward R. Holley
1988, Conference Paper
The fractional-step method was used in this study to split the longitudinal advective transport term from the other terms in the two-dimensional, laterally-averaged equation for estuarine mass transport. The method of characteristics with spline interpolations was used to approximate the longitudinal advective transport. A general discussion of the fractional-step method,...
Septicemic pasteurellosis in elk (Cervus elaphus) on the United States National Elk Refuge, Wyoming
J. C. Franson, B.L. Smith
1988, Journal of Wildlife Diseases (24) 715-717
Septicemic pasteurellosis caused by Pasteurella multocida is believed responsible for the deaths of 48 elk (Cervus elaphus) on the National Elk Refuge near Jackson, Wyoming (USA) during 1986 and 1987. Clinical signs included depression and salivation; necropsy findings included congestion and petechial and ecchymotic hemorrhages in lymph nodes, diaphragm, lungs...
Lead poisoning in six captive avian species
W. Nelson Beyer, James W. Spann, Louis Sileo, J. Christian Franson
1988, Archives of Environmental Contamination and Toxicology (17) 121-130
Red-winged blackbirds (Agelaius phoeniceus), brown-headed cowbirds (Molothrus ater), common grackles (Quiscalus quiscula), mallards (Anas platyrhynchos), northern bobwhites (Colinus virginianus), and eastern screech-owls (Otus asio) were poisoned with a concentration of lead (Pb) acetate in the diet which was...
Causes of varied sediment gravity flow types on the Alsek Prodelta, northeast Gulf of Alaska
William C. Schwab, Homa J. Lee, Bruce F. Molnia
1988, Marine Geotechnology (7) 317-342
Slope failures and subsequent mass movements have been identified in Holocene glaciomarine sediment on declivities less than 1.3° on the Alsek prodelta, Gulf of Alaska. Isolated collapse features cover less than 10 percent of a nearshore sand deposit, in water depths less than 40 m. In contrast, sediment gravity flow...
Semianalytical computation of path lines for finite-difference models
D.W. Pollock
1988, Ground Water (26) 743-750
A semianalytical particle tracking method was developed for use with velocities generated from block centered finite-difference ground-water flow models. The method is based on the assumption that each directional velocity component varies linearly within a grid cell in its own coordinate directions. This assumption allows...
Geochemistry of water at Cajon Pass, California: Preliminary results
Y.K. Kharaka, G. Ambats, William C. Evans, A. F. White
1988, Geophysical Research Letters (15) 1037-1040
Samples of water and associated gases were collected from the Cajon Pass well using downhole samplers, and from the pipe stands at the completion of drill stem tests. The fluids were recovered from fracture systems in granitic rocks from two uncased test intervals located at 1,829...
A survey of the prevalence of selected bacteria in wild birds
M.C. Brittingham, S.A. Temple, R. M. Duncan
1988, Journal of Wildlife Diseases (24) 299-307
We determined the prevalence of six genera of bacteria from a sample of 387 cloacal swabs from 364 passerines and woodpeckers. The prevalence of bacteria were as follows: Escherichia coli (1%), Pseudomonas spp. (22%), Salmonella spp. (0%), Staphylococcus spp. (15%), Streptococcus spp. (18%), and Yersinia spp. (1%). The prevalence of Streptococcus spp. was higher in omnivorous species...
Hibernacula and summer den sites of pine snakes (Pituophis melanoleucus) in the New Jersey pine barrens
J. Burger, R.T. Zappalorti, M. Gochfeld, W.I. Boarman, M. Caffrey, V. Doig, S.D. Garber, B. Lauro, M. Mikovsky, C. Safina, Jorge Saliva
1988, Journal of Herpetology (22) 425-433
We examined eight summer dens (used only in summer) and seven hibernacula (occupied both in winter and summer) of the snake Pituophis melanoleucus in the New Jersey Pine Barrens, comparing above ground characteristics of hibernacula and summer dens with characteristics at nearby random points. Temperatures at the soil surface and...
Thermal modelling of stepwise anatexis in a thrust-thickened sialic crust
E-An Zen
1988, Transactions of the Royal Society of Edinburgh, Earth Sciences (79) 223-235
One-dimensional modelling of the thermal history of a sialic crust thickened by multiple overstack thrusting of upper crustal material shows that anatexis is likely. both the uplift rate and the length of the incubation period between end of tectonism and start of uplift are important controls on the amount and...
A tentative protocol for measurement of radon availability from the ground
A.B. Tanner
1988, Northeastern Environmental Science (7) 58-62
A procedure is being tested in order to determine its suitability for assessing the intrinsic ability of the ground at a particular site to supply radon (222Rn) to a basement structure to be built on the site. The mean migration distance, multiplied by the measured radon concentration gives the "Radon...
Acetylene as a substrate in the development of primordial bacterial communities
C.W. Culbertson, F.E. Strohmaier, R.S. Oremland
1988, Origins of Life and Evolution of the Biosphere (18) 397-407
The fermentation of atmospheric acetylene by anaerobic bacteria is proposed as the basis of a primordial heterotrophic food chain. The accumulation of fermentation products (acetaldehyde, ethanol, acetate and hydrogen) would create niches for sulfate-respiring bacteria as well as methanogens. Formation of acetylene-free environments in soils and sediments would also alter...
