Land cover characterization and land surface parameterization research
Louis T. Steyaert, Thomas R. Loveland, William J. Parton
1997, Ecological Applications (7) 1-2
The understanding of land surface processes and their parameterization in atmospheric, hydrologic, and ecosystem models has been a dominant research theme over the past decade. For example, many studies have demonstrated the key role of land cover characteristics as controlling factors in determining land surface processes, such as the exchange...
Chain of custody; recommendations for acceptance and analysis of evidentiary geochemical samples
Christine M. Murphy, Paul H. Briggs, Betty M. Adrian, Steve A. Wilson, Phil L. Hageman, Pete M. Theodorakos
1997, Circular 1138
Personnel from the Analytical Chemistry Services Group (ACSG), Mineral Resource Survey Program, formed a team to determine the policies for acceptance and analysis of geochemical samples. This team contacted law enforcement agencies that handle litigious samples, laboratories that work with samples of special nature, and the Solicitor General, Department of...
Transformations of TNT and related aminotoluenes in groundwater aquifer slurries under different electron-accepting conditions
L.R. Krumholz, J. Li, W.W. Clarkson, G.G. Wilber, J.M. Suflita
1997, Journal of Industrial Microbiology and Biotechnology (18) 161-169
The transport and fate of pollutants is often governed by both their tendency to sorb as well as their susceptibility to biodegradation. We have evaluated these parameters for 2,4,6-trinitrotoluene (TNT) and several biodegradation products. Slurries of aquifer sediment and groundwater depleted TNT at rates of 27, 7.7 and 5.9 μM...
Near to the edge of an ice sheet
Steven W. Hostetler
1997, Nature (385) 393-394
No abstract available....
The application of molecular methods for detection and control of fish rhabdoviruses
J. R. Winton
1997, Conference Paper, Proceedings of the NRIA international workshop on new approaches to viral diseases of aquatic animals
Abstract not available...
Antibody screening for the identification of nervous necrosis virus carriers in a flounder broodstock
M. Yoshimizu, K. Suzuki, T. Nishizawa, J. R. Winton, Y. Eruza
1997, Conference Paper, Proceedings of the NRIA international workshop on new approaches to viral diseases of aquatic animals
Abstract not available...
Genesis of the marble-hosted zinc deposits and iron deposits at Sterling Hill and Franklin, NJ, and comparisons with gneiss-hosted iron deposits at Cornwall, NY
Craig A. Johnson
1997, Conference Paper, Field guide and proceedings of the fourteenth annual meeting of the Geological Association of New Jersey, 1997
No abstract available....
Geologic map of the Fort Garland Quadrangle, Costilla County, Colorado
A. R. Wallace
1997, Miscellaneous Field Studies Map 2312-E
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management
E. H. Koerkle, D. W. Hall, D. W. Risser, P. L. Lietman, D. C. Chichester
1997, Water-Resources Investigations Report 93-4173
The U.S. Geological Survey, in cooperation with the U.S. Department of Agriculture and Pennsylvania Department of Environmental Protection, investigated the effects of agricultural best-management practices on water quality in the Conestoga River headwaters watershed. This report describes environmental factors and the surface-water and ground-water quality of one 47.5-acre field site,...
Combining digital spatial data with hydrologic measurements to interpret controls of stream chemistry in large watersheds
Yvonne H. Baevsky, Gregory B. Lawrence, David M. Wolock, Douglas A. Burns, Peter S. Murdoch
1997, Conference Paper, BIOGEOMON '97 journal of conference abstracts
No abstract available....
Site-specific lead exposure from lead pellet ingestion in sentinel mallards
Tonie E. Rocke, C. J. Brand, John G. Mensik
1997, Journal of Wildlife Management (61) 228-234
We monitored lead poisoning from the ingestion of spent lead pellets in sentinel mallards (Anas platyhrynchos) at the Sacramento National Wildlife Refuge (SNWR), Willows, California for 4 years (1986-89) after the conversion to steel shot for waterfowl hunting on refuges in 1986. Sentinel mallards were held in 1.6-ha enclosures in...
Movement and diffusion of pore fluids in Owens Lake sediments from core OL-92 as shown by salinity and deuterium-hydrogen ratios
Irving Friedman, James L. Bischoff, Craig A. Johnson, Scott W. Tyler, Jeffrey P. Fitts
1997, GSA Special Papers (317) 49-66
No abstract available....
Relation of the lower Pennsylvanian unconformity to a mid-carboniferous eustatic event in the eastern United States
K. J. Englund, R. E. Thomas
1997, Prace - Panstwowego Instytutu Geologicznego 170-172
Two contrasting concepts specifying the age and duration of the hiatus resulting from a mid-Carboniferous eustatic event in the eastern United States are based on different evidence. The original model indicated that the hiatus is at an unconformity in cratonic areas that was assumed to coincide with the Mississippian-Pennsylvanian boundary...
Detecting contaminant-induced apoptosis and necrosis in lake trout thymocytes via flow cytometry.
Leonard I. Sweet, Dora R. Passino-Reader, Peter G. Meier, Geneva M. Omann
J.S. Stolen, T.C. Fletcher, A.F. Rowley, J.T. Zelikoff, S.L. Kaattari, S.A. Smith, editor(s)
1997, Book chapter, Techniques in Fish Immunology-3
This chapter details the cytofluorometric techniques employed to assess levels of active (apoptosis) and passive (necrotic) cell death in untreated and contaminant-treated fish thymocytes. The thymus is believed to be a central component of hematopoiesis and immune function in teleosts (Abelli et al., 1996). Hence, chemically-elicited adverse effects to...
Distribution and mobility of molybdenum in the terrestrial environment
Kathleen S. Smith, Laurie S. Balistrieri, Steven M. Smith, Ronald C. Severson
Umesh C. Gupta, editor(s)
1997, Book chapter, Molybdenum in agriculture
Molybdenum (Mo) is an essential element for many plants and animals (Newton and Otsuka, 1980). Because of its chemical properties, Mo readily provides sites for reactions and catalysis in biochemical systems (Haight and Boston, 1973). It is therefore important to understand the processes that control the distribution, speciation, and behavior...
New K-Ar and 40Ar/39Ar ages of plutonism, hydrothermal alteration, and mineralization in the central Wasatch Mountains, Utah
David A. John, B. D. Turrin, R. J. Miller
1997, Society of Economic Geologists guidebook series (29) 47-57
Twenty-one new K-Ar and 10 new 40Ar/39Ar ages are reported for igneous and hydrothermal minerals from intrusive rocks of the Wasatch igneous belt in the central Wasatch Mountains. Interpretation of our new data combined with previously published K-Ar ages and with new 40Ar/39Ar and U-Pb ages reported by Vogel et al. (1997)...
Diagnostic findings in the 1992 epornitic of neurotropic velogenic Newcastle disease in double-crested cormorants from the upper midwestern United States
Carol U. Meteyer, Douglas E. Docherty, Linda C. Glaser, J. C. Franson, Dennis A. Senne, Ruth Duncan
1997, Avian Diseases (41) 171-180
Neurotropic velogenic Newcastle disease (NVND) occurred in juvenile double-crested cormorants, Phalacrocorax auritus, simultaneously in nesting colonies in Minnesota, North Dakota, South Dakota, and Nebraska and in Lakes Michigan, Superior, Huron, and Ontario during the summer of 1992. Mortality as high as 80%-90% was estimated in some of the nesting colonies. Clinical...
Potential for new nickel-copper sulfide deposits in the Lake Superior region
Klaus J. Schulz, William F. Cannon
1997, Report
Scientists from the U.S. Geological Survey are evaluating the potential for undiscovered sulfide deposits containing varying amounts of nickel, copper, platinum-group metals, and cobalt in the Lake Superior region as part of an ongoing effort to assess the mineral potential of the United States. Similarities between rocks of the Midcontinent...
Sulfur isotope analyses using the laser microprobe
W.C. Pat Shanks III, D.E. Crowe, Craig A. Johnson
1997, Book chapter, Applications of microanalytical techniques to understanding mineralizing processes
Since the first studies of sulfur isotope variations in natural materials (Thode, 1949), it has been apparent that there are large and dramatic variations of 34S/32S ratios and that sulfur isotope studies are a powerful tool for interpreting the origins of sulfur-bearing minerals. However, sulfur is such a common element in...
Multiresolution convariation among landsat and AVHRR vegetation indices
Lee De Cola
1997, Book chapter, Scale in remote sensing and GIS
No abstract available....
Habitat use and movements of shovelnose sturgeon in Pool 13 of the upper Mississippi River during extreme low flow conditions
Gary L. Curtis, John S. Ramsey, Dennis L. Scarnecchia
1997, Environmental Biology of Fishes (50) 175-182
We monitored habitat use and movement of 27 adult shovelnose sturgeon in Pool 13 of the upper Mississippi River, Iowa-Illinois, by radio-telemetry in April through August 1988. Our objective was to determine the response of this species to unusually low water conditions in the upper Mississippi River in 1988. Most...
Physical/chemical processes affecting the subsurface fate and transport of synthetic organic materials
W.P. Ball, G.P. Curtis, P.V. Roberts
1997, Book chapter, Subsurface Restoration
No abstract available....
Geologic setting and characteristic of mineral deposits in the central Wasatch Mountains, Utah
David A. John
1997, Society of Economic Geologists guidebook series (29) 11-33
Base- and precious-metal deposits in the central Wasatch Mountains southeast of Salt Lake City were mined for more than 100 years beginning in 1868. Deposits present in the Park City, Little Cottonwood, and Big Cottonwood mining districts include Ag-Pb-Zn ± Cu ± Au replacements and veins, a low-grade porphyry Cu-Au...
Day one road log: Mid-Tertiary igneous rocks and mineral deposits in the central Wasatch Mountains, Utah
David A. John
1997, Society of Economic Geologists guidebook series (29) 59-67
Today's field trip examines late Eocene and Oligocene granitoid intrusions, cogenetic volcanic rocks (Keetley Volcanics), and associated hydrothermally altered and mineralized rocks in the central Wasatch Mountains. Because of late Cenozoic tilting related to Basin and Range extension, a continuum of mid-Tertiary paleodepths is exposed that ranges from about 11...
Deep regional resistivity structure across the Carlin Trend
Brian D. Rodriguez
Peter Vikre, Tommy B. Thompson, K. H. Bettles, Odin Christensen, Ron Parratt, editor(s)
1997, Book chapter, Carlin-type gold deposits field conference
The genesis of gold deposits along the Carlin trend is not fully understood. Many of the significant mineral deposits in the Carlin trend were formed during the Tertiary as a result of interrelated high-angle basin-and-range faulting, intrusive igneous activity, and hydrothermal processes (Radtke, 1985). According to Shawe (1991), the linearity...
