Magmatic unrest beneath Mammoth Mountain, California
D.P. Hill, S. Prejean
2005, Journal of Volcanology and Geothermal Research (146) 257-283
Mammoth Mountain, which stands on the southwest rim of Long Valley caldera in eastern California, last erupted ∼57,000 years BP. Episodic volcanic unrest detected beneath the mountain since late 1979, however, emphasizes that the underlying volcanic system is still active and capable of producing future volcanic eruptions. The unrest symptoms...
Long-term analysis of survival, fertility, and population growth rate of black bears in North Carolina
L.L. Brongo, M.S. Mitchell, J.B. Grand
2005, Journal of Mammalogy (86) 1029-1035
We estimated survival, fertility, and realized and asymptotic population growth rates from 1981 to 2002 for a protected population of black bears (Ursus americanus) in the southern Appalachian Mountains. We used Akaike's information criterion to assess the time interval for averaging observations that was best for estimating vital rates for...
U/Th dating by SHRIMP RG ion-microprobe mass spectrometry using single ion-exchange beads
J. L. Bischoff, J. Wooden, F. Murphy, Ross W. Williams
2005, Geochimica et Cosmochimica Acta (69) 1841-1846
We present a new analytical method for U-series isotopes using the SHRIMP RG (Sensitive High mass Resolution Ion MicroProbe) mass spectrometer that utilizes the preconcentration of the U-series isotopes from a sample onto a single ion-exchange bead. Ion-microprobe mass spectrometry is capable of producing Th ionization efficiencies in excess of...
Modeling downstream fining in sand-bed rivers. II: Application
S. Wright, G. Parker
2005, Journal of Hydraulic Research (43) 621-631
In this paper the model presented in the companion paper, Wright and Parker (2005) is applied to a generic river reach typical of a large, sand-bed river flowing into the ocean in order to investigate the mechanisms controlling longitudinal profile development and downstream fining. Three mechanisms which drive downstream fining...
U-Pb SHRIMP geochronology of zircon in garnet peridotite from the Sulu UHP terrane, China: Implications for mantle metasomatism and subduction-zone UHP metamorphism
R. Y. Zhang, J.S. Yang, J. L. Wooden, J. G. Liou, T.F. Li
2005, Earth and Planetary Science Letters (237) 729-743
We studied the Zhimafang ultrahigh-pressure metamorphic (UHP) peridotite from pre-pilot drill hole PP-1 of Chinese Continental Scientific Drilling project in the Sulu UHP terrane, eastern China. The peridotite occurs as lens within quartofeldspathic gneiss, and has an assemblage of Ol + Opx + Cpx + Phl + Ti-clinohumite (Ti-Chu) +...
Multifractal magnetic susceptibility distribution models of hydrothermally altered rocks in the Needle Creek Igneous Center of the Absaroka Mountains, Wyoming
Mark E. Gettings
2005, Nonlinear Processes in Geophysics (12) 587-601
Magnetic susceptibility was measured for 700 samples of drill core from thirteen drill holes in the porphyry copper-molybdenum deposit of the Stinkingwater mining district in the Absaroka Mountains, Wyoming. The magnetic susceptibility measurements, chemical analyses, and alteration class provided a database for study of magnetic susceptibility in these altered rocks....
Monitoring eruptive activity at Mount St. Helens with TIR image data
R.G. Vaughan, S.J. Hook, M.S. Ramsey, V.J. Realmuto, D.J. Schneider
2005, Geophysical Research Letters (32) 1-4
Thermal infrared (TIR) data from the MASTER airborne imaging spectrometer were acquired over Mount St. Helens in Sept and Oct, 2004, before and after the onset of recent eruptive activity. Pre‐eruption data showed no measurable increase in surface temperatures before the first phreatic eruption on Oct 1. MASTER data acquired...
Effects of coal-bed methane discharge waters on the vegetation and soil ecosystem in Powder River Basin, Wyoming
M. Stearns, J.A. Tindall, G. Cronin, M.J. Friedel, E. Bergquist
2005, Water, Air, & Soil Pollution (168) 33-57
Coal-bed methane (CBM) co-produced discharge waters in the Powder River Basin of Wyoming, resulting from extraction of methane from coal seams, have become a priority for chemical, hydrological and biological research during the last few years. Soil and vegetation samples were taken from affected and reference sites (upland elevations...
Mercury content of the Springfield coal, Indiana and Kentucky
J.C. Hower, Maria Mastalerz, A. Drobniak, J.C. Quick, C.F. Eble, M.J. Zimmerer
2005, International Journal of Coal Geology (63) 205-227
With pending regulation of mercury emissions in United States power plants, its control at every step of the combustion process is important. An understanding of the amount of mercury in coal at the mine is the first step in this process. The Springfield coal (Middle Pennsylvanian) is one of the...
Ordovician conodonts and stratigraphy of the ST. Peter sandstone and glen wood shale, central United States
B.J. Witzke, R.A. Metzger
2005, Bulletins of American Paleontology (2005) 53-91
The age of the St. Peter Sandstone in the central and northern Midcontinent has long been considered equivocal because of the general absence of biostratigraphically useful fossils. Conodonts recovered from the St. Peter Sandstone in Iowa, Minnesota, Nebraska, and Kansas for this study help place some age constraints on this...
Hydratools, a MATLAB® based data processing package for Sontek Hydra data
M. Martini, F. L. Lightsom, C. R. Sherwood, J. Xu, J.R. Lacy, A. Ramsey, R. Horwitz
2005, Conference Paper, Proceedings of the IEEE Working Conference on Current Measurement Technology
The U.S. Geological Survey (USGS) has developed a set of MATLAB tools to process and convert data collected by Sontek Hydra instruments to netCDF, which is a format used by the USGS to process and archive oceanographic time-series data. The USGS makes high-resolution current measurements within 1.5 meters of the...
Incorporating uncertainty in watershed management decision-making: A mercury TMDL case study
W. Labiosa, J. Leckie, R. Shachter, D. Freyberg, J. Rytuba
Moglen G.E., editor(s)
2005, Conference Paper, Proceedings of the 2005 Watershed Management Conference - Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges
Water quality impairment due to high mercury fish tissue concentrations and high mercury aqueous concentrations is a widespread problem in several sub-watersheds that are major sources of mercury to the San Francisco Bay. Several mercury Total Maximum Daily Load regulations are currently being developed to address this problem. Decisions about...
Post-Cedar Fire Arroyo Toad (Bufo californicus) Monitoring Surveys at Cuyamaca Rancho State Park, 2004. Final Report
M.B. Mendelsohn, M. C. Madden-Smith, Robert N. Fisher
2005, Report
No abstract available at this time...
Waterfowl distribution, movements, and habitat use relative to recent habitat changes in the Central Valley of California: A cooperative project to investigate impacts of the Central Valley Joint Venture and changing agricultural practices on the ecology of wintering waterfowl. Final Report
J. P. Fleskes, J.L. Yee, Michael L. Casazza, M. R. Miller, John Y. Takekawa, D.L. Orthmeyer
2005, Report
No abstract available at this time...
Evidence for size-selective mortality after the first summer of ocean growth by pink salmon
J.H. Moss, D.A. Beauchamp, A.D. Cross, K.W. Myers, Edward V. Farley Jr., J.M. Murphy, J.H. Helle
2005, Transactions of the American Fisheries Society (134) 1313-1322
Pink salmon Onchorhynchus gorbuscha with identifiable thermal otolith marks from Prince William Sound hatchery release groups during 2001 were used to test the hypothesis that faster-growing fish during their first summer in the ocean had higher survival rates than slower-growing fish. Marked juvenile pink salmon were sampled monthly in Prince...
Alternative life histories shape brain gene expression profiles in males of the same population
N. Aubin-Horth, C.R. Landry, B. H. Letcher, H.A. Hofmann
2005, Proceedings of the Royal Society B: Biological Sciences (272) 1655-1662
Atlantic salmon (Salmo salar) undergo spectacular marine migrations before homing to spawn in natal rivers. However, males that grow fastest early in life can adopt an alternative 'sneaker' tactic by maturing earlier at greatly reduced size without leaving freshwater. While the ultimate evolutionary causes have been well studied, virtually nothing...
Performance of juvenile steelhead trout (Oncorhynchus mykiss) produced from untreated and cryopreserved milt
Michael C. Hayes, Stephen P. Rubin, Jay E. Hensleigh, Reginald R. Reisenbichler, Lisa A. Wetzel
2005, Aquaculture (249) 291-302
Despite the expanding use of milt cryopreservation in aquaculture, the performance of fish produced from this technique has not been fully explored beyond initial rearing stages. We compared the performance of juvenile steelhead Oncorhynchus mykiss produced from untreated (UM) and cryopreserved milt (CM) and reared for 4–9 months. For the...
Effects of urbanization on the geomorphology, habitat, hydrology, and fish index of biotic integrity of streams in the Chicago area, Illinois and Wisconsin
F. A. Fitzpatrick, M.W. Diebel, M.A. Harris, T.L. Arnold, M.A. Lutz, K.D. Richards
2005, American Fisheries Society Symposium (2005) 87-115
Effects of urbanization on geomorphic, habitat, and hydrologic characteristics and fish biotic integrity of 45 streams in the Chicago area were examined by the U.S. Geological Survey from 2000 to 2001. An agricultural to urban land-cover gradient approach was used. Landscape characteristics such as texture of surficial deposits, slope, riparian...
Ocean science: Radiocarbon variability in the western North Atlantic during the last deglaciation
L.F. Robinson, J.F. Adkins, L.D. Keigwin, J. Southon, D. P. Fernandez, S.-L. Wang, D.S. Scheirer
2005, Science (310) 1469-1473
We present a detailed history of glacial to Holocene radiocarbon in the deep western North Atlantic from deep-sea corals and paired benthic-planktonic foraminifera. The deglaciation is marked by switches between radiocarbon-enriched and -depleted waters, leading to large radiocarbon gradients in the water column. These changes played an important role in...
Morphological and electrophysiological examination of olfactory sensory neurons during the early developmental prolarval stage of the sea lamprey Petromyzon marinus L
B.S. Zielinski, Keith Fredricks, R. McDonald, A.U. Zaidi
2005, Journal of Neurocytology (34) 209-216
This study examined olfactory sensory neuron morphology and physiological responsiveness in newly hatched sea lamprey, Petromyzon marinus L. These prolarvae hatch shortly after neural tube formation, and stay within nests for approximately 18 days, before moving downstream to silty areas where they burrow, feed and pass to the larval stage....
Lake Michigan wetlands: classification, concerns, and management opportunities
Douglas A. Wilcox
T. Edsall, M. Munawar, editor(s)
2005, Book chapter, State of Lake Michigan: Ecology, Health, and Management
The wetlands that border Lake Michigan are an extremely important component of the lake ecosystem. In this paper, I will review the status of wetland classifications used for Lake Michigan and the other Great Lakes, as well as the major management concerns and opportunities presented by Lake Michigan wetlands....
Interpreting DNAPL saturations in a laboratory-scale injection using one- and two-dimensional modeling of GPR Data
Raymond H. Johnson, Eileen P. Poeter
2005, Ground Water Monitoring and Remediation (25) 159-169
Ground-penetrating radar (GPR) is used to track a dense non-aqueous phase liquid (DNAPL) injection in a laboratory sand tank. Before modeling, the GPR data provide a qualitative image of DNAPL saturation and movement. One-dimensional (1D) GPR modeling provides a quantitative interpretation of DNAPL volume within a given thickness during and...
Southwestern willow flycatcher breeding site and territory summary - 2003
S.L. Durst, M. K. Sogge, A.B. Smith, S. O Williams III, B.E. Kus, S.J. Sferra
2005, Report
No abstract available at this time...
Acid neutralization within limestone sand reactors receiving coal mine drainage
B.J. Watten, P.L. Sibrell, M.F. Schwartz
2005, Environmental Pollution (137) 295-304
Pulsed bed treatment of acid mine drainage (AMD) uses CO2 to accelerate limestone dissolution and intermittent fluidization to abrade and carry away metal hydrolysis products. Tests conducted with a prototype of 60 L/min capacity showed effective removal of H+ acidity over the range 196-584 mg/L (CaCO3) while concurrently generating surplus...
Population manipulations
C.K. Dodd Jr.
M.J. Lannoo, editor(s)
2005, Book chapter, Declining Amphibians: The Conservation Status of United States Species.
Abstract not supplied at this time...
