Contaminants in fishes from great lakes-influenced sections and above dams of three Michigan Rivers: III. Implications for health of bald eagles
J. P. Giesy, W.W. Bowerman, M.A. Mora, D. A. Verbrugge, R. A. Othoudt, J.L. Newsted, C. L. Summer, R.J. Aulerich, S.J. Bursian, J. P. Ludwig, G. A. Dawson, T.J. Kubiak, D. A. Best, D. E. Tillitt
1995, Archives of Environmental Contamination and Toxicology (29) 309-321
Recently, there have been discussions of the relative merits of passage of fishes around hydroelectric dams on three rivers (Au Sable, Manistee, and Muskegon) in Michigan. A hazard assessment was conducted to determine the potential for adverse effects on bald eagles that could consume such fishes from above and below...
Molecular epizootiology and evolution of the glycoprotein and non-virion protein genes of infectious hematopoietic necrosis virus, a fish rhabdovirus
Stuart T. Nichol, Joan E. Rowe, James R. Winton
1995, Virus Research (38) 159-173
Infectious hematopoietic necrosis virus (IHNV) causes a highly lethal, economically important disease of salmon and trout. The virus is enzootic throughout western North America, and has been spread to Asia and Europe. The nucleotide sequences of the glycoprotein (G) and non-virion (NV) genes of 12 diverse IHNV isolates were determined...
Pasteurella multocida isolated from wild birds of North America: a serotype and DNA fingerprint study of isolates from 1978 to 1993
M. A. Wilson, R. M. Duncan, G.E. Nordholm, B.M. Berlowski
1995, Avian Diseases (39) 587-593
Serotype and DNA fingerprint methods were used to study Pasteurella multocida isolated from 320 wild birds of North America. Isolates were collected during 1978-93. The HhaI profiles of 314 isolates matched the HhaI profile of somatic reference type 1, strain X-73; somatic type 1 antigen was expressed by 310 isolates,...
Gross-beta activity in ground water: natural sources and artifacts of sampling and laboratory analysis
Alan H. Welch, Zoltan Szabo, David L. Parkhurst, Peter C. Van Metre, Ann H. Mullin
1995, Applied Geochemistry (10) 491-503
Gross-beta activity has been used as an indicator of beta-emitting isotopes in water since at least the early 1950s. Originally designed for detection of radioactive releases from nuclear facilities and weapons tests, analysis of gross-beta activity is widely used in studies of naturally occurring radioactivity in ground water. Analyses of...
Teleseismic tomography of the Loma Prieta Earthquake Region, California: Implications for strain partitioning
Y. Takauchi, John R. Evans
1995, Geophysical Research Letters (22) 2203-2206
From teleseismic travel times we derive three-dimensional velocity models of the upper 71 km in the 1989 Loma Prieta earthquake region, central California. Shallow crustal structure is consistent with local-earthquake tomography. Horizontal velocity gradients at all depths suggest that the San Andreas fault was a deep shear locus, at least...
Evidence of hydrous differentiation and crystal accumulation in the low-MgO, high-Al2O3 Lake Basalt from Medicine Lake volcano, California
T.P. Wagner, Julie M. Donnelly-Nolan, T.L. Grove
1995, Contributions to Mineralogy and Petrology (121) 201-216
The late Pleistocene Lake Basalt of Medicine Lake volcano, California is comprised of variably porphyritic basalt and basaltic andesite flows and scoria. These eruptives are similar in composition and phenocryst abundance to the low-MgO, high-Al2O3 mafic magmas common in convergent margin settings. The petrogenesis of the magmas that produced the Lake...
Virus and bacteria transport in a sandy aquifer, Cape Cod, MA
Roger C. Bales, Shimin Li, Kimberly M. Maguire, Moyasar T. Yahya, Charles P. Gerba, Ronald W. Harvey
1995, Groundwater (33) 653-661
Transport of the bacteriophage PRD-1, bacteria, and latex microspheres was studied in a sandy aquifer under natural-gradient conditions. The field injection was carried out at the U.S. Geological Survey's Toxic Substances Hydrology research site on Cape Cod. The three colloids and a salt tracer (Br−) moved along the same path....
Source parameters and crustal Q for four earthquakes in South Carolina
Joe B. Fletcher
1995, Seismological Research Letters (66) 44-61
Two three-component seismometers (one surface and one borehole) were re-installed on the Savannah River Site (SRS), South Carolina in July 1992 to determine attenuation in the Coastal Plain sediment wedge and source parameters of local earthquakes. Four earthquakes M ∼ 1.8 to 3.6 were recorded during the next 6 months. The largest...
Deep-sea biostratigraphy of prograding platform margins (Neogene, Bahamas): Key evidence linked to depositional rhythm
Barbara H. Lidz, D.F. McNeill
1995, Marine Micropaleontology (25) 87-125
New foraminiferal evidence from two boreholes on the paleoshelf and slope of western Great Bahama Bank has wide-ranging implications for understanding formation and evolution of carbonate-platform margins. The new data, abundant well-preserved planktic foraminifera, were obtained by disaggregating samples from intercalated pelagic layers and selected parts of thick hemipelagic limestone....
Effects of colloids on metal transport in a river receiving acid mine drainage, upper Arkansas River, Colorado, U.S.A.
Briant A. Kimball
1995, Applied Geochemistry (10) 285-306
Inflows of metal-rich, acidic water that drain from mine dumps and tailings piles in the Leadville, Colorado, area enter the non-acidic water in the upper Arkansas River. Hydrous iron oxides precipitate as colloids and move downstream in suspension, particularly downstream from California Gulch, which has been the major source of...
Improving electrofishing catch consistency by standardizing power
Randy W. Burkhardt, Steve Gutreuter
1995, North American Journal of Fisheries Management (15) 375-381
The electrical output of electrofishing equipment is commonly standardized by using either constant voltage or constant amperage, However, simplified circuit and wave theories of electricity suggest that standardization of power (wattage) available for transfer from water to fish may be critical for effective standardization of electrofishing. Electrofishing with standardized power...
Processes controlling the chemistry of two snowmelt‐dominated streams in the Rocky Mountains
Donald H. Campbell, David W. Clow, George P. Ingersoll, M. Alisa Mast, Norman E. Spahr, John T. Turk
1995, Water Resources Research (31) 2811-2821
Time‐intensive discharge and chemical data for two alpine streams in the Loch Vale watershed, Colorado, were used to identify sources of runoff, flow paths, and important biogeochemical processes during the 1992 snowmelt runoff season. In spite of the paucity of soil cover the chemical composition of the streams is regulated...
The M2 tide on the Amazon Shelf
R.C. Beardsley, J.L. Candela, R. Limeburner, W. Rockwell Geyer, Steven J. Lentz, Belmiro M. Castro, D.A. Cacchione, Nelson Carneiro
1995, Journal of Geophysical Research C: Oceans (100) 2283-2319
As part of A Multidisciplinary Amazon Shelf Sediment Study (AMASSEDS), moored and shipboard current measurements made over the Amazon shelf during 1990–1991 have been analyzed to determine the dominant semidiurnal tidal constituent, the M2. These results have been combined with coastal sea level data from within the Amazon and Para...
Seismic refraction measurements within the Peninsular terrane, south central Alaska
Elizabeth L. Ambos, Walter D. Mooney, Gary S. Fuis
1995, Journal of Geophysical Research (100) 4079-4095
We present an interpretation of crustal seismic refraction data from the Peninsular terrane, one of the many exotic terranes that have been accreted to the continental margin of southern Alaska in the past 200 m.y. A seismic refraction line was collected along the Glenn Highway in the...
Graphical and PC-software analysis of volcano eruption precursors according to the Materials Failure Forecast Method (FFM)
Reinold R. Cornelius, Barry Voight
1995, Journal of Volcanology and Geothermal Research (64) 295-320
The Materials Failure Forecasting Method for volcanic eruptions (FFM) analyses the rate of precursory phenomena. Time of eruption onset is derived from the time of “failure” implied by accelerating rate of deformation. The approach attempts to fit data, Ω, to the...
Ecosystem responses to phytoplankton blooms - examples from south San Francisco Bay
J. E. Cloern
1995, Interagency Ecological Program Newsletter (8) 10-13
In 1968, USGS began a program of basic research in San Francisco Bay that has complemented the research and monitoring elements of the Interagency Program. Although the USGS program ranges its focus of study. From year to year, it has elements of continuity because some measurements have been made routinely...
Chlorofluorocarbons as tracers of groundwater transport processes in a shallow, silty sand aquifer
P.G. Cook, D. K. Solomon, Niel Plummer, E. Busenberg, S.L. Schiff
1995, Water Resources Research (31) 425-434
Detailed depth profiles of Chlorofluorocarbons CFC-11(CFCl3(, CFC-12 (CF2Cl2) and CFC-113 (C2F3Cl3) have been obtained from a well-characterized field site in central Ontario. Aquifer materials comprise predominantly silty sands, with a mean organic carbon content of 0.03%. Nearly one-dimensional flow exists at this site, and the vertical migration of a well-defined 3H...
Screening tests for assessing the anaerobic biodegradation of pollutant chemicals in subsurface environments
Joseph M. Suflita, Frank Concannon
1995, Journal of Microbiological Methods (21) 267-281
Screening methods were developed to assess the susceptibility of ground water contaminants to anaerobic biodegradation. One method was an extrapolation of a procedure previously used to measure biodegradation activity in dilute sewage sludge. Aquifer solids and ground water with no additional nutritive media were incubated anaerobically in 160-ml serum bottles...
Uppermost Campanian–Maestrichtian strontium isotopic, biostratigraphic, and sequence stratigraphic framework of the New Jersey Coastal Plain
Peter J. Sugarman, K.G. Miller, David Bukry, Mark D. Feigenson
1995, GSA Bulletin (107) 19-37
Firm stratigraphic correlations are needed to evaluate the global significance of unconformity bounded units (sequences). We correlate the well-developed uppermost Campanian and Maestrichtian sequences of the New Jersey Coastal Plain to the geomagnetic polarity time scale (GPTS) by integrating Sr-isotopic stratigraphy and biostratigraphy. To do this, we developed a Maestrichtian...
Shear-wave splitting from local earthquakes at the Geysers Geothermal Field, California
John R. Evans, Bruce R. Julian, G.R. Foulger, Alwyn Ross
1995, Geophysical Research Letters (22) 501-504
Shear-wave splitting from local microearth-quakes recorded in The Geysers geothermal field shows that seismic anisotropy is distributed in a complex geographic pattern. At stations within about 2 km of northwest-striking regional faults, the fast polarization direction is parallel to those faults. The geothermal field, lying between two such faults, has...
Inflation of Long Valley Caldera from one year of continuous GPS observations
Frank Webb, Marcus Bursik, Timothy Dixon, Frederic Farina, Grant Marshall, Ross S. Stein
1995, Geophysical Research Letters (22) 195-198
A permanent Global Positioning System receiver at Casa Diablo Hot Springs, Long Valley Caldera, California was installed in January, 1993, and has operated almost continuously since then. The data have been transmitted daily to the Jet Propulsion Laboratory for routine analysis with data from the Fiducial Laboratories for an International...
238U-234U-230Th chronometry of Fe-Mn crusts: Growth processes and recovery of thorium isotopic ratios of seawater
F. Chabaux, A.S. Cohen, R. K. O’Nions, J.R. Hein
1995, Geochimica et Cosmochimica Acta (59) 633-638
Comparison of ((234U)excess(238U)">234U) excess⁄(238U) and ((230Th232Th">230Th⁄232Th) activity ratios in oceanic Fe-Mn deposits provides a method for assessing the closed-system behaviour of 238U-234U-230Th, as well as variations in the initial uranium and thorium isotopic ratios of the precipitated metal oxides. This...
Stratigraphic significance of siliceous microfossils collected during NAUTIPERC dives (off Peru, 5 °-6°S)
P. De Wever, J. Bourgois, J.-P. Caulet, E. Fourtanier, J. Barron, P. Dumitrica
1995, Marine Micropaleontology (24) 287-305
The geological evolution of the northern Peru convergent margin can be traced using samples collected during deep-sea dives of the submersible Nautile. In the Paita area (5°–6°S), the sedimentary sequence was intensively sampled along the main scarp of the middle slope area. It consists of Upper Miocene (7–9 Ma) to Pleistocene...
Modeling the effects of variable groundwater chemistry on adsorption of molybdate
Kenneth G. Stollenwerk
1995, Water Resources Research (31) 347-357
Laboratory experiments were used to identify and quantify processes having a significant effect on molybdate (MoO42−) adsorption in a shallow alluvial aquifer on Cape Cod, assachusetts. Aqueous chemistry in the aquifer changes as a result of treated sewage effluent mixing with groundwater. Molybdate adsorption decreased as pH, ionic strength, and the...
Ribbon Cliff landslide Washington, and the earthquake of 14 December 1872
Richard F. Madole, Robert L. Schuster, Andrei M. Sarna-Wojcicki
1995, Bulletin of the Seismological Society of America (85) 986-1002
Estimates of the epicentral location and maximum intensity of the earthquake of 14 December 1872, the largest and oldest historic earthquake documented in the Pacific Northwest, are controversial largely because the estimates are based on ground effects. The Ribbon Cliff landslide is one of the more critical ground effects used...
