Big Soda Lake (Nevada). 3. Pelagic methanogenesis and anaerobic methane oxidation
Niels Iversen, Ronald S. Oremland, Michael J. Klug
1987, Limnology and Oceanography (32) 804-814
In situ rates of methanogenesis and methane oxidation were measured in meromictic Big Soda Lake. Methane production was measured by the accumulation of methane in the headspaces of anaerobically sealed water samples; radiotracer was used to follow methane oxidation. Nearly all the methane oxidation occurred in the anoxic zones of...
Rapid assay for microbially reducible ferric iron in aquatic sediments
Derek R. Lovely, Elizabeth Philips
1987, Applied and Environmental Microbiology (53) 1536-1540
The availability of ferric iron for microbial reduction as directly determined by the activity of iron-reducing organisms was compared with its availability as determined by a newly developed chemical assay for microbially reducible iron. The chemical assay was based on the reduction of poorly crystalline ferric iron by hydroxylamine under...
Aqueous pyrite oxidation by dissolved oxygen and by ferric iron
Carl O. Moses, D. Kirk Nordstrom, Janet S. Herman, Aaron L. Mills
1987, Geochimica et Cosmochimica Acta (51) 1561-1571
Rates of aqueous, abiotic pyrite oxidation were measured in oxygen-saturated and anaerobic Fe(III)-saturated solutions with initial pH from 2 to 9. These studies included analyses of sulfite, thiosulfate, polythionates and sulfate and procedures for cleaning oxidation products from pyrite surfaces were evaluated. Pyrite oxidation in oxygen-saturated solutions produced (1) rates...
A wireline piston core barrel for sampling cohesionless sand and gravel below the water table
Michael M. Zapico, Samuel Vales, John A. Cherry
1987, Groundwater Monitoring & Remediation (7) 74-82
A coring device has been developed to obtain long and minimally disturbed samples of saturated cohesionless sand and gravel. The coring device, which includes a wireline and piston, was developed specifically for use during hollow-stem auger drilling but it also offers possibilities for cable tool and rotary drilling. The core...
Increased solubility of quartz in water due to complexing by organic compounds
P. Bennett, D. I. Siegel
1987, Nature (326) 684-686
Quartz is the most stable natural solid phase of silica. It weathers extremely slowly at the Earth's surface1, and often resists weathering even after all other silicate minerals have been degraded. However, there is ample evidence from both ancient and modern environments indicating enhanced dissolution and mobility of silica under...
Monodisperse ferrous phosphate colloids in an anoxic groundwater plume
Philip M. Gschwend, Matthew D. Reynolds
1987, Journal of Contaminant Hydrology (1) 309-327
Groundwater samples collected near a secondary-sewage infiltration site on Cape Cod, Massachusetts were examined for colloidal materials (10–1000 nm). In two wells the water contained a population of monodisperse 100-nm particles, detected using laser-light scattering and autocorrelation data processing. SEM and SEM-EDAX analysis of these colloidal materials collected on ultrafilters...
Synopsis of wetland functions and values: bottomland hardwoods with special emphasis on eastern Texas and Oklahoma
D.L. Wilkinson, K. Schneller-McDonald, R.W. Olson, G.T. Auble
1987, Report, Biological Report
Bottomland hardwood wetlands are the natural cover type of many floodplain ecosystems in the southeastern United States. They are dynamic, productive systems that depend on intermittent flooding and moving water for maintenance of structure and function. Many of the diverse functions performed by bottomland hardwoods (e.g., flood control, sediment trapping,...
Some effects of acid mine drainage on Clear Creek, Colorado
W. H. Ficklin, K. S. Smith, Katherine Walton-Day
1987, Book chapter, A view of water supply, water quality and geotechnical engineering in Denver, Jefferson, Gilpin and Clear Creek counties, Colorado: Sixth annual field trip guidebok
No abstract available....
Inhibition of aqueous copper and lead adsorption onto goethite by dissolved carbonate species
Kathleen S. Smith, D. Langmuir
R. C. Averett, D.M. McKnight, editor(s)
1987, Book chapter, Chemical quality of water and the hydrologic cycle
No abstract available. ...
Fitting straight lines in the earth sciences
B.M. Troutman, G. P. Williams
1987, Book chapter, Use and abuse of statistical methods in the earth sciences
No abstract available. ...
Bioconcentration of creosote compounds in snails obtained from Pensacola Bay, Florida, near an onshore hazardous-waste site
C. E. Rostad, W. E. Pereira
Robert C. Averett, editor(s)
1987, Book chapter, Chemical quality of water and the hydrologic cycle
No abstract available. ...
Crude oil identification with electrothermal vaporization-multiple wavelength absorption spectrometry
J.M. Shekiro Jr., R. K Skogerboe, Howard E. Taylor
1987, Chemosphere (16) 983-988
A spectrometric technique utilizing electrothermal vaporization (graphite furnace) and gas phase-multiple wavelength absorption with photodiode array detection is used to characterize crude oil....
An empirical model for estimating phytoplankton productivity in estuaries
B.E. Cole, J. E. Cloern
1987, Marine Ecology Progress Series (396) 299-305
e have previously shown that primary productivity in San Francisco Bay, USA, is highly correlated with phytoplankton biomass B (chlorophyll a concentration) and an index of light avallability in the photic zone, 2, I, (photic depth times surface irradiance). To test the generality of this relation, we compiled data from...
A compositional multiphase model for groundwater contamination by petroleum products: 1. Theoretical considerations
M. Yavuz Corapcioglu, Arthur L. Baehr
1987, Water Resources Research (23) 191-200
A mathematical model is developed to describe the fate of hydrocarbon constituents of petroleum products introduced to soils as an immiscible liquid from sources such as leaking underground storage tanks and ruptured pipelines. The problem is one of multiphase transport (oil (immiscible), air, and water phases) of a reactive contaminant...
Some effects of climate variability on hydrology in western North America
D. H. Peterson, D.R. Cayan, J. S. Dileo-Stevens, T.G. Ross
1987, Conference Paper, The influence of climate change and climatic variability on the hydrologic regime and water resources (Proceedings of the Vancouver Symposium, August 1987), IAHS Publication no. 168
The strong north-south gradient in precipitation along the West Coast makes this region an interesting laboratory for studying the influence of climate on runoff variability in general and riverine chemistry in particular. Interannual fluctuations in large-scale atmospheric circulation and associated precipitation and runoff can produce major disruptions in the "average"...
Compilation of hydrologic data for the Edwards aquifer, San Antonio area, Texas, 1985, with 1934-85 summary
G. B. Ozuna, G.M. Nalley, M. N. Bowman
1987, Edwards Underground Water District Bulletin 45
No abstract available....
The mobilization of aluminum in a natural soil system: Effects of hydrologic pathways
Isabelle M. Cozzarelli, Janet S. Herman, Roderic A. Parnell Jr.
1987, Water Resources Research (23) 859-874
A two-component soil water flow model was used in conjunction with an equilibrium speciation model WATEQF to study aluminum mobility in soils of a forested watershed, White Oak Run, in the Shenandoah National Park, Virginia. Soil solution samples, taken from the O, E, B, C1, and C2horizons, were collected from...
A compositional multiphase model for groundwater contamination by petroleum products: 2. Numerical solution
Arthur L. Baehr, M. Yavuz Corapcioglu
1987, Water Resources Research (23) 201-213
In this paper we develop a numerical solution to equations developed in part 1 (M. Y. Corapcioglu and A. L. Baehr, this issue) to predict the fate of an immiscible organic contaminant such as gasoline in the unsaturated zone subsequent to plume establishment. This solution, obtained by using a finite...
Diagenesis and fluid flow in the San Juan Basin, New Mexico - regional zonation in the mineralogy and stable isotope composition of clay minerals in sandstone.
C. Gene Whitney, H. R. Northrop
1987, American Journal of Science (287) 353-382
The Westwater Canyon Member of the Upper Jurassic Morrison Formation is a relatively homogeneous, hydrologically continuous 100-m-thick sequence of massive fluvial sandstone, bounded above and below by relatively heterogeneous, hydrologically discontinuous units and has served as a primary conduit for fluids within this stratigraphic interval. Patterns of mineral-fluid reactions suggest...
U. S. GEOLOGICAL SURVEY'S NATIONAL REAL-TIME HYDROLOGIC INFORMATION SYSTEM USING GOES SATELLITE TECHNOLOGY.
William G. Shope Jr.
1987, Conference Paper
The U. S. Geological Survey maintains the basic hydrologic data collection system for the United States. The Survey is upgrading the collection system with electronic communications technologies that acquire, telemeter, process, and disseminate hydrologic data in near real-time. These technologies include satellite communications via the Geostationary Operational Environmental Satellite, Data...
Hydrogeological concepts in the United States: a historical perspective.
J.E. Moore, B.B. Hanshaw
1987, Episodes (10) 315-321
Reviews the development of hydrogeological concepts in the USA from 1879 to 1987, from early qualitative reconnaissance investigations to modern qualitative and multi-disciplinary studies involving predictive analytical techniques and a consideration of management practices. The authors present a sampling of historical milestone papers in US hydrology in the form of...
A study of metal ion adsorption at low suspended-solid concentrations
Cecily C.Y. Chang, J.A. Davis, James S. Kuwabara
1987, Estuarine, Coastal and Shelf Science (24) 419-424
A procedure for conducting adsorption studies at low suspended solid concentrations in natural waters (<50 mg l−1) is described. Methodological complications previously associated with such experiments have been overcome. Adsorption of zinc ion onto synthetic colloidal titania (TiO2) was studied as a function...
Volatilization of ethylene dibromide from water
R. E. Rathbun, D. Y. Tai
1987, Environmental Science & Technology (21) 248-252
Overall mass-transfer coefficients for the volatilization of ethylene dibromide from water were measured simultaneously with the oxygen absorption coefficient in a laboratory stirred tank. Coefficients were measured as a function of mixing conditions in the water for two windspeeds. The ethylene dibromide mass-transfer coefficient depended on windspeed; the ethylene dibromide...
Sources and flux of natural gases from Mono Lake, California
Ronald S. Oremland, L.G. Miller, Michael J. Whiticar
1987, Geochimica et Cosmochimica Acta (51) 2915-2929
The ability to identify a formation mechanism for natural gas in a particular environment requires consideration of several geochemical factors when there are multiple sources present. Four primary sources of methane have been identified in Mono Lake. Two of these sources were associated with numerous natural gas seeps which...
Stratification of a cityscape using census and land use variables for inventory of building materials
G.H. Rosenfield, K. Fitzpatrick-Lins, T. L. Johnson
1987, The Annals of Regional Science (21) 22-33
A cityscape (or any landscape) can be stratified into environmental units using multiple variables of information. For the purposes of sampling building materials, census and land use variables were used to identify similar strata. In the Metropolitan Statistical Area of a cityscape, the census tract is the smallest unit for...
