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Page 373, results 9301 - 9325

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The geochemistry of acid mine waters
D. Kirk Nordstrom, Charles N. Alpers
Geoffrey S. Plumlee, M.J. Logsdon, editor(s)
1999, Book chapter, The environmental geochemistry of mineral deposits: Part A: Processes, methods and health issues
No abstract available....
Sulfates
D. Kirk Nordstrom
1999, Book chapter, Encyclopedia of environmental science
No abstract available....
Some fundamentals of geochemistry
D. Kirk Nordstrom
Geoffrey S. Plumlee, M.J. Logsdon, editor(s)
1999, Book chapter, The environmental geochemistry of mineral deposits: Part A processes, methods and health issues
No abstract available. ...
Chlorofluorocarbons
L.N. Plummer, Eurybiades Busenberg
P. Cook, A. Herczeg, editor(s)
1999, Book chapter, Environmental tracers in subsurface hydrology
No abstract available. ...
Selenium pollution
Theresa S. Presser
D. Alexander, Rhodes W. Fairbridge, editor(s)
1999, Book chapter, Encyclopedia of environmental science
No abstract available. ...
Solutions to questions
D.E. Anderson
1999, Book chapter, Instructor's solution manual for unsaturated zone hydrology for scientists and engineers
No abstract available. ...
Ground-water flow paths and traveltime to three small embayments within the Peconic Estuary, eastern Suffolk County, New York
Christopher Schubert
1999, Water-Resources Investigations Report 98-4181
The Peconic Estuary, at the eastern end of Long Island, has been plagued by a recurrent algal bloom that has caused the severe decline of local marine resources. Although the onset, duration, and cessation of the bloom remain unpredictable, ground-water discharge has been shown to affect surface-water quality in the...
Molecular analysis of microbial community structures in pristine and contaminated aquifers: Field and laboratory microcosm experiments
Y. Shi, M.D. Zwolinski, M.E. Schreiber, J.M. Bahr, G.W. Sewell, W.J. Hickey
1999, Applied and Environmental Microbiology (65) 2143-2150
This study used phylogenetic probes in hybridization analysis to (i) determine in situ microbial community structures in regions of a shallow sand aquifer that were oxygen depleted and fuel contaminated (FC) or aerobic and noncontaminated (NC) and (ii) examine alterations in microbial community structures resulting from exposure to toluene and/or...
Stream restoration at Denali National Park and Preserve
Roseann V. Densmore, Kenneth F. Karle
1999, Conference Paper, Proceedings: High altitude revegetation workshop No. 13; Information series no. 89
Placer mining for gold has severely disturbed many riparian ecosystems in northern regions. We are conducting a long-term project to test methods to promote restoration of a placer-mined watershed in Denali National Park and Preserve. The project included hydrological restoration of the unstable and excessively confined stream with heavy equipment....
The interaction of natural organic matter with iron in a wetland (Tennessee Park, Colorado) receiving acid mine drainage
Stefan Peiffer, Katherine Walton-Day, Donald L. Macalady
1999, Aquatic Geochemistry (5) 207-223
Pore water from a wetland receiving acid mine drainage was studied for its iron and natural organic matter (NOM) geochemistry on three different sampling dates during summer 1994. Samples were obtained using a new sampling technique that is based on screened pipes of varying length (several centimeters), into which dialysis...
Comparison of the stable-isotopic composition of soil water collected from suction lysimeters, wick samplers, and cores in a sandy unsaturated zone
M.K. Landon, G. N. Delin, S.C. Komor, C.P. Regan
1999, Journal of Hydrology (224) 45-54
Soil water collected from suction lysimeters and wick samplers buried in the unsaturated zone of a sand and gravel aquifer and extracted from soil cores were analyzed for stable oxygen and hydrogen isotope values. Soil water isotopic values differed among the three sampling methods in most cases. However, because each...
Evaluation of stream water quality in Atlanta, Georgia, and the surrounding region (USA)
N.E. Peters, S.J. Kandell
1999, IAHS-AISH Publication 279-290
A water-quality index (WQI) was developed from historical data (1986-1995) for streams in the Atlanta Region and augmented with 'new' and generally more comprehensive biweekly data on four small urban streams, representing an industrial area, a developed medium-density residential area and developing and developed low-density residential areas. Parameter WQIs were...
Strategies for ensuring global consistency/comparability of water-quality data
J.M. Klein
1999, Conference Paper, IAHS-AISH Publication
In the past 20 years the water quality of the United States has improved remarkably-the waters are safer for drinking, swimming, and fishing. However, despite many accomplishments, it is still difficult to answer such basic questions as: 'How clean is the water?' and 'How is it changing over time?' These...
A topological system for delineation and codification of the Earth's river basins
K.L. Verdin, J. P. Verdin
1999, Journal of Hydrology (218) 1-12
A comprehensive reference system for the Earth's river basins is proposed as a support to fiver basin management, global change research, and the pursuit of sustainable development. A natural system for delineation and codification of basins is presented which is based upon topographic control and the topology of the fiver...
Prediction of episodic acidification in North-eastern USA: An empirical/mechanistic approach
T.D. Davies, M. Tranter, P.J. Wigington Jr., K.N. Eshleman, N.E. Peters, J. Van Sickle, David R. DeWalle, Peter S. Murdoch
1999, Hydrological Processes (13) 1181-1195
Observations from the US Environmental Protection Agency's Episodic Response Project (ERP) in the North-eastern United States are used to develop an empirical/mechanistic scheme for prediction of the minimum values of acid neutralizing capacity (ANC) during episodes. An acidification episode is defined as a hydrological event during which ANC decreases. The...
Are shifts in herbicide use reflected in concentration changes in Midwestern rivers?
W.A. Battaglin, D. A. Goolsby
1999, Environmental Science & Technology (33) 2917-2925
In many Midwestern rivers, elevated concentrations of herbicides occur during runoff events for 1-3 months following application. The highest or 'peak' herbicide concentration often occurs during one of these runoff events. Herbicide concentrations in rivers are affected by a number of factors, including herbicide use patterns within the associated basin....