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...
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....
Chloroethene biodegradation in sediments at 4°C
P. M. Bradley, S. Richmond, F. H. Chapelle
2005, Applied and Environmental Microbiology (71) 6414-6417
Microbial reductive dechlorination of [1,2-14C]trichloroethene to [14C]cis-dichloroethene and [14C]vinyl chloride was observed at 4°C in anoxic microcosms prepared with cold temperature-adapted aquifer and river sediments from Alaska. Microbial anaerobic oxidation of [1,2-14C]cis-dichloroethene and [1,2-14C]vinyl chloride to 14CO2 also was observed under these conditions. ...
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...
A whole image approach using field measurements for transforming EO1 Hyperion hyperspectral data into canopy reflectance spectra
Elijah W. Ramsey III, G. Nelson
2005, International Journal of Remote Sensing (26) 1589-1610
To maximize the spectral distinctiveness (information) of the canopy reflectance, an atmospheric correction strategy was implemented to provide accurate estimates of the intrinsic reflectance from the Earth Observing 1 (EO1) satellite Hyperion sensor signal. In rendering the canopy reflectance, an estimate of optical depth derived from a measurement of downwelling...
Experimental investigation of CO2-brine-rock interactions at elevated temperature and pressure: Implications for CO2 sequestration in deep-saline aquifers
R.J. Rosenbauer, T. Koksalan, J.L. Palandri
2005, Fuel Processing Technology (86) 1581-1597
Deep-saline aquifers are potential repositories for excess CO2, currently being emitted to the atmosphere from anthropogenic activities, but the reactivity of supercritical CO2 with host aquifer fluids and formation minerals needs to be understood. Experiments reacting supercritical CO2 with natural and synthetic brines in the presence and absence of limestone and plagioclase-rich...
Acute toxicity of resmethrin, malathion and methoprene to larval and juvenile American lobsters (Homarus amemcanus) and analysis of pesticide levels in surface waters after Scourge™, Anvil™ and Altsoid™ application
Ann M. Zulkosky, Joseph P. Ruggieri, Stephen A. Terracciano, Bruce J. Brownawell, Anne E. McElroy
2005, Journal of Shellfish Research (24) 795-804
Acute toxicity and immune response, combined with temperature stress effects, were evaluated in larval and juvenile American lobsters (Homarus americanus) exposed to malathion, resmethrin and methoprene. These pesticides were used to control West Nile virus in New York in 1999, the same year the American lobster population collapsed in western...
Individual variability in esterase activity and CYP1A levels in Chinook salmon (Oncorhynchus tshawytscha) exposed to esfenvalerate and chlorpyrifos
C.E. Wheelock, K.J. Eder, I. Werner, H. Huang, P. D. Jones, B.F. Brammell, A.A. Elskus, B.D. Hammock
2005, Aquatic Toxicology (74) 172-192
Acetylcholinesterase (AChE) activity has traditionally been monitored as a biomarker of organophosphate (OP) and/or carbamate exposure. However, AChE activity may not be the most sensitive endpoint for these agrochemicals, because OPs can cause adverse physiological effects at concentrations that do not affect AChE activity. Carboxylesterases are a related family of...
The evolution of vertebrate Toll-like receptors
J.C. Roach, G. Glusman, L. Rowen, A. Kaur, M. K. Purcell, K.D. Smith, L.E. Hood, A. Aderem
2005, Proceedings of the National Academy of Sciences of the United States of America (102) 9577-9582
The complete sequences of Takifugu Toll-like receptor (TLR) loci and gene predictions from many draft genomes enable comprehensive molecular phylogenetic analysis. Strong selective pressure for recognition of and response to pathogen-associated molecular patterns has maintained a largely unchanging TLR recognition in all vertebrates. There are six major families of vertebrate...
Study on evaluation methods for Rayleigh wave dispersion characteristic
L. Shi, X. Tao, R. Kayen, H. Shi, S. Yan
2005, Earthquake Engineering and Engineering Vibration (25) 24-29
The evaluation of Rayleigh wave dispersion characteristic is the key step for detecting S-wave velocity structure. By comparing the dispersion curves directly with the spectra analysis of surface waves (SASW) method, rather than comparing the S-wave velocity structure, the validity and precision of microtremor-array method (MAM) can be evaluated more...
Suspended sediment fluxes in a tidal wetland: Measurement, controlling factors, and error analysis
N. K. Ganju, D. H. Schoellhamer, B.A. Bergamaschi
2005, Estuaries (28) 812-822
Suspended sediment fluxes to and from tidal wetlands are of increasing concern because of habitat restoration efforts, wetland sustainability as sea level rises, and potential contaminant accumulation. We measured water and sediment fluxes through two channels on Browns Island, at the landward end of San Francisco Bay, United States, to...
Geomorphic control of radionuclide diffusion in desert soils
J.D. Pelletier, C.D. Harrington, J.W. Whitney, M. Cline, S.B. DeLong, G. Keating, T.K. Ebert
2005, Geophysical Research Letters (32) 1-4
Diffusion is a standard model for the vertical migration of radionuclides in soil profiles. Here we show that diffusivity values inferred from fallout 137CS profiles in soils on the Fortymile Wash alluvial fan, Nye County, Nevada, have a strong inverse correlation with the age of the geomorphic surface. This result...
Holocene and latest Pleistocene oblique dextral faulting on the southern Inyo Mountains fault, Owens Lake basin, California
S.N. Bacon, A. S. Jayko, J. P. McGeehin
2005, Bulletin of the Seismological Society of America (95) 2472-2485
The Inyo Mountains fault (IMF) is a more or less continuous range-front fault system, with discontinuous late Quaternary activity, at the western base of the Inyo Mountains in Owens Valley, California. The southern section of the IMF trends ???N20??-40?? W for at least 12 km at the base of and...
The watershed and river systems management program
S.L. Markstrom, D. Frevert, G.H. Leavesley
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
The Watershed and River System Management Program (WaRSMP), a joint effort between the U.S. Geological Survey (USGS) and the U.S. Bureau of Reclamation (Reclamation), is focused on research and development of decision support systems and their application to achieve an equitable balance among diverse water resource management demands. Considerations include:...
Gas geochemistry of a shallow submarine hydrothermal vent associated with the El Requesón fault zone, Bahía Concepción, Baja California Sur, México
Matthew J. Forrest, Jorge Ledesma-Vazquez, William Ussler III, Justin T. Kulongoski, David R. Hilton, H. Gary Greene
2005, Chemical Geology (224) 82-95
We investigated hydrothermal gas venting associated with a coastal fault zone along the western margin of Bahía Concepción, B.C.S., México. Copious discharge of geothermal liquid (≈ 90 °C) and gas is occurring in the intertidal and shallow subtidal zones (to a depth of 13 m) through soft sediments and fractures in...
Trace metal concentrations in snow from the Yukon River Basin, Alaska and Canada
B. Wang, L. Gough, T. Hinkley, J. Garbarino, P. Lamothe
2005, Conference Paper, World Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress
We report here on metal concentrations in snow collected from the Yukon River basin. Atmospheric transport of metals and subsequent deposition is a known mechanism for introducing metals into the northern environment. Potential sources of airborne elements are locally generated terrestrial sources, locally derived anthropogenic sources, and long range atmospheric...
The detection and mapping of oil on a marshy area by a remote luminescent sensor
C. McFarlane, R. D. Watson
2005, Conference Paper, 2005 International Oil Spill Conference, IOSC 2005
Airborne remote sensing can be a cost-effective method for monitoring pollutants in large areas such as occur in oil spills. An opportunity to test a particular method arose when a well ruptured and for 23 days spewed a 90-meter fountain of oil into the air, dispersing the oil over a...
Status and conservation of the fish fauna of the Alabama River system
Mary C. Freeman, E.R. Irwin, N.M. Burkhead, B. J. Freeman, H.L. Bart Jr.
2005, American Fisheries Society Symposium (2005) 557-585
The Alabama River system, comprising the Alabama, Coosa, and Tallapoosa subsystems, forms the eastern portion of the Mobile River drainage. Physiographic diversity and geologic history have fostered development in the Alabama River system of globally significant levels of aquatic faunal diversity and endemism. At least 184 fishes are native to...
Mark-resight superpopulation estimation of a wintering elk Cervus elaphus canadensis herd
William R. Gould, S. T. Smallidge, Bruce C. Thompson
2005, Wildlife Biology (11) 341-349
We executed four mark-resight helicopter surveys during the winter months January–February for each of the three years 1999–2001 at 7–10 day intervals to estimate population size of a wintering elk Cervus elaphus canadensis herd in northern New Mexico. We counted numbers of radio-collared and uncollared elk on a simple random sample...
Debris-bed friction of hard-bedded glaciers
D. Cohen, N.R. Iverson, T.S. Hooyer, U.H. Fischer, M. Jackson, P.L. Moore
2005, Journal of Geophysical Research F: Earth Surface (110)
[1] Field measurements of debris-bed friction on a smooth rock tablet at the bed of Engabreen, a hard-bedded, temperate glacier in northern Norway, indicated that basal ice containing 10% debris by volume exerted local shear traction of up to 500 kPa. The corresponding bulk friction coefficient between the dirty basal...
Behavior of amphibians on the road in response to car traffic
M. J. Mazerolle, M. Huot, M. Gravel
2005, Herpetologica (61) 380-388
Nocturnal car traffic often results in amphibian casualties, especially during rainy nights. The behavior of amphibians presumably influences their vulnerability to mortality on the road, but this hypothesis remains untested. We investigated the behavioral response of individuals of six species of amphibians on roads when confronted by an approaching vehicle....
Surficial geologic tools in fluvial geomorphology: chapter 2
Robert B. Jacobson, James E. O'Connor, Takashi Oguchi
G. Mathias Kondolf, Hervé Piégay, editor(s)
2005, Book chapter, Tools in fluvial geomorphology
No abstract available....
Simulating the evolution of coastal morphology and stratigraphy with a new morphological-behaviour model (GEOMBEST)
D. Stolper, J. H. List, E.R. Thieler
2005, Marine Geology (218) 17-36
A new morphological-behaviour model is used to simulate evolution of coastal morphology associated with cross-shore translations of the shoreface, barrier, and estuary. The model encapsulates qualitative principles drawn from established geological concepts that are parameterized to provide quantitative predictions of morphological change on geological time scales (order 10 3 years),...
Changes in the water surface profile of the Colorado River in Grand Canyon, Arizona, between 1923 and 2000
Christopher S. Magirl, Robert H. Webb, Peter G. Griffiths
2005, Water Resources Research (41)
In 1923, a U.S. Geological Survey expedition surveyed the water surface profile of the Colorado River through Grand Canyon with theodolite and stadia rod. In 2000, lidar overflights collected topographic data centered on the river corridor, allowing construction of a new water surface profile and detection of change in the...
Genotyping of the fish rhabdovirus, viral haemorrhagic septicaemia virus, by restriction fragment length polymorphisms
Katja Einer-Jensen, James R. Winton, Niels Lorenzen
2005, Veterinary Microbiology (106) 167-178
The aim of this study was to develop a standardized molecular assay that used limited resources and equipment for routine genotyping of isolates of the fish rhabdovirus, viral haemorrhagic septicaemia virus (VHSV). Computer generated restriction maps, based on 62 unique full-length (1524 nt) sequences of the VHSV glycoprotein (G) gene, were...
