Radiation pattern of a borehole radar antenna
K.J. Ellefsen, D.L. Wright
2005, Geophysics (70) K1-K11
The finite-difference time-domain method was used to simulate radar waves that were generated by a transmitting antenna inside a borehole. The simulations were of four different models that included features such as a water-filled borehole and an antenna with resistive loading. For each model, radiation patterns for the far-field region...
A new Sunwaptan (Late Cambrian) trilobite fauna from the Upper Mississippi Valley
S. R. Westrop, Allison R. Palmer, Anthony Runkel
2005, Journal of Paleontology (79) 72-88
A single bed at the base of the Jordan Sandstone in a road cut at Arcadia, Wisconsin, yielded an undescribed Late Sunwaptan (Saukia Zone) trilobite fauna that includes at least four species from the families Dikelocephalidae Miller, 1889 and Eurekiidae Hupe??, 1953. Arcadiaspis bispinata n. gen. and sp. is a...
Using chaotic forcing to detect damage in a structure
L. Moniz, J. Nichols, S. Trickey, M. Seaver, D. Pecora, L. Pecora
2005, Chaos (15)
In this work we develop a numerical test for Holder continuity and apply it and another test for continuity to the difficult problem of detecting damage in structures. We subject a thin metal plate with incremental damage to the plate changes, its filtering properties, and therefore the phase space trajectories...
The calcite → aragonite transformation in low-Mg marble: Equilibrium relations, transformations mechanisms, and rates
Bradley R. Hacker, David C. Rubie, Stephen H. Kirby, Steven R. Bohlen
2005, Journal of Geophysical Research B: Solid Earth (110) 1-16
Experimental transformation of a rather pure natural calcite marble to aragonite marble did not proceed via the expected straightforward polymorphic replacement. Instead, the small amount of Mg in the starting material (0.36 wt %) was excluded from the growing aragonite and diffused preferentially into the remaining calcite grains, producing Mg-rich...
Slicing up the San Francisco Bay Area: Block kinematics and fault slip rates from GPS-derived surface velocities
M. A. d'Alessio, I.A. Johanson, R. Burgmann, D.A. Schmidt, M.H. Murray
2005, Journal of Geophysical Research B: Solid Earth (110) 1-19
Observations of surface deformation allow us to determine the kinematics of faults in the San Francisco Bay Area. We present the Bay Area velocity unification (BA??VU??, "bay view"), a compilation of over 200 horizontal surface velocities computed from campaign-style and continuous Global Positioning System (GPS) observations from 1993 to 2003....
Mycobacterium pseudoshottsii sp. nov., a slowly growing chromogenic species isolated from Chesapeake Bay striped bass (Morone saxatilis)
M. W. Rhodes, H. Kator, A. McNabb, C. Deshayes, J.-M. Reyrat, B. A. Brown-Elliott, R. Wallace Jr., K.A. Trott, J.M. Parker, B. Lifland, G. Osterhout, I. Kaattari, K. Reece, W. Vogelbein, C. A. Ottinger
2005, International Journal of Systematic and Evolutionary Microbiology (55) 1139-1147
A group of slowly growing photochromogenic mycobacteria was isolated from Chesapeake Bay striped bass (Morone saxatilis) during an epizootic of mycobacteriosis. Growth characteristics, acid-fastness and 16S rRNA gene sequencing results were consistent with those of the genus Mycobacterium. Biochemical reactions, growth characteristics and mycolic acid profiles (HPLC) resembled those of...
Simulation of reactive transport of injected CO2 on the Colorado Plateau, Utah, USA
S.P. White, R.G. Allis, Jeff Moore, T. Chidsey, C. Morgan, W. Gwynn, M. Adams
2005, Chemical Geology (217) 387-405
This paper investigates injection of CO2 into non-dome-shaped geological structures that do not provide the traps traditionally deemed necessary for the development of artificial CO2 reservoirs. We have developed a conceptual and two numerical models of the geology and groundwater along a cross-section lying approximately NW-SE and in the vicinity...
Rapid differentiation of refined fuels using negative electrospray ionization/mass spectrometry
C.E. Rostad, F. D. Hostettler
2005, Conference Paper, American Chemical Society, Division of Petroleum Chemistry, Preprints
An application of electrospray ionization/mass spectrometry for identification of various commercially refined fuels using the unique signature of polar components, was investigated. The samples were analyzed by mass spectrometry using negative electrospray on an Agilent Series 1100 liquid chromatograph/mass spectrometer. These analysis were applied to hydrocarbon samples from a large,...
Structural evolution of fault zones in sandstone by multiple deformation mechanisms: Moab fault, southeast Utah
N.C. Davatzes, P. Eichhubl, A. Aydin
2005, Geological Society of America Bulletin (117) 135-148
Faults in sandstone are frequently composed of two classes of structures: (1) deformation bands and (2) joints and sheared joints. Whereas the former structures are associated with cataclastic deformation, the latter ones represent brittle fracturing, fragmentation, and brecciation. We investigated the distribution of these structures, their formation, and the underlying...
Telemedicine diffusion in a developing country: The case of India (March 2004)
A. Pal, V.W.A. Mbarika, F. Cobb-Payton, P. Datta, S. McCoy
2005, IEEE Transactions on Information Technology in Biomedicine (9) 59-65
Telemedicine (health-care delivery where physicians examine distant patients using telecommunications technologies) has been heralded as one of several possible solutions to some of the medical dilemmas that face many developing countries. In this study, we examine the current state of telemedicine in a developing country, India. Telemedicine has brought a...
The fundamental thermal niche of adult landlocked striped bass
P.W. Bettoli
2005, Transactions of the American Fisheries Society (134) 305-314
Researchers have described the temperatures selected by landlocked striped bass Morone saxatilis in different locales throughout the USA. However, seasonally low concentrations of dissolved oxygen (DO) in many systems prevented striped bass from using the cool waters (<22??C) they may have preferred. In Melton Hill Reservoir, a 92-km-long impoundment on...
Long-term behavior of water content and density in an earthen liner
T.E. Frank, I.G. Krapac, T.D. Stark, G.D. Strack
2005, Journal of Geotechnical and Geoenvironmental Engineering (131) 800-803
An extensively instrumented compacted earthen liner was constructed at the Illinois State Geological Survey facility in Champaign, III. in 1987. A pond of water 0.31 m deep was maintained on top of the 7.3 m ?? 14.6 m ?? 0.9 m thick liner for 14 years. One of the goals...
Numerical simulation of double‐diffusive finger convection
Joseph D. Hughes, Ward E. Sanford, H. Leonard Vacher
2005, Water Resources Research (41)
A hybrid finite element, integrated finite difference numerical model is developed for the simulation of double‐diffusive and multicomponent flow in two and three dimensions. The model is based on a multidimensional, density‐dependent, saturated‐unsaturated transport model (SUTRA), which uses one governing equation for fluid flow and another for solute transport. The...
Hydrologic regime controls soil phosphorus fluxes in restoration and undisturbed wetlands
A. Aldous, P. McCormick, C. Ferguson, S. Graham, C. Craft
2005, Restoration Ecology (13) 341-347
Many wetland restoration projects occur on former agricultural soils that have a history of disturbance and fertilization, making them prone to phosphorus (P) release upon flooding. To study the relationship between P release and hydrologic regime, we collected soil cores from three restoration wetlands and three undisturbed wetlands around Upper...
Mortality of Rocky Mountain elk in Michigan due to meningeal worm
Louis C. Bender, S. M. Schmitt, E. Carlson, Jonathan B. Haufler, Dean E. Beyer Jr.
2005, Journal of Wildlife Diseases (41) 134-140
Mortality from cerebrospinal parelaphostrongylosis caused by the meningeal worm (Parelaphostrongylus tenuis) has been hypothesized to limit elk (Cervus elaphus nelsoni) populations in areas where elk are conspecific with white-tailed deer (Odocoileus virginianus). Elk were reintroduced into Michigan (USA) in the early 1900s and subsequently greatly increased population size and distribution...
Thiamine status in adult salmonines in the Great Lakes
S.B. Brown, D. C. Honeyfield, J.G. Hnath, M. Wolgamood, S.V. Marcquenski, J.D. Fitzsimons, D. E. Tillitt
2005, Journal of Aquatic Animal Health (17) 59-64
In 1996 and again in 1999, hatchery personnel noted that some Lake Michigan coho salmon Oncorhynchus kisutch from fall spawning runs on the Platte River weir exhibited abnormal wiggling behavior that was similar to the behavior exhibited by thiamine-deficient Atlantic salmon Salmo salar, from the Baltic Sea. Samples of eggs...
Characterizing flow regimes for floodplain forest conservation: An assessment of factors affecting sapling growth and survivorship on three cold desert rivers
D.C. Andersen
2005, Canadian Journal of Forest Research (35) 2886-2899
I analyzed annual height growth and survivorship of Fremont cottonwood (Populus fremontii S. Watson) saplings on three floodplains in Colorado and Utah to assess responses to interannual variation in flow regime and summer precipitation. Mammal exclosures, supplemented with an insecticide treatment at one site, were used to assess flow regime...
Effects of temperature on survival and development of early life stage Pacific and western brook lampreys
M.H. Meeuwig, J.M. Bayer, J.G. Seelye
2005, Transactions of the American Fisheries Society (134) 19-27
We examined the effects of temperature (10, 14, 18, and 22??C) on survival and development of Pacific lampreys Lampetra tridentata and western brook lampreys L. richardsoni during embryological and early larval stages. The temperature for zero development was estimated for each species, and the response to temperature was measured as...
Loss estimates for a Puente Hills blind-thrust earthquake in Los Angeles, California
E. H. Field, H.A. Seligson, N. Gupta, V. Gupta, T.H. Jordan, K.W. Campbell
2005, Earthquake Spectra (21) 329-338
Based on OpenSHA and HAZUS-MH, we present loss estimates for an earthquake rupture on the recently identified Puente Hills blind-thrust fault beneath Los Angeles. Given a range of possible magnitudes and ground motion models, and presuming a full fault rupture, we estimate the total economic loss to be between $82...
Testing the generality of a trophic-cascade model for plague
S.K. Collinge, W.C. Johnson, C. Ray, R. Matchett, J. Grensten, J.F. Cully Jr., K.L. Gage, M.Y. Kosoy, J.E. Loye, A.P. Martin
2005, EcoHealth (2) 102-112
Climate may affect the dynamics of infectious diseases by shifting pathogen, vector, or host species abundance, population dynamics, or community interactions. Black-tailed prairie dogs (Cynomys ludovicianus) are highly susceptible to plague, yet little is known about factors that influence the dynamics of plague epizootics in prairie dogs. We investigated temporal...
Estimation of groundwater consumption by phreatophytes using diurnal water table fluctuations: A saturated‐unsaturated flow assessment
Steven P. Loheide II, James J. Butler Jr., Steven M. Gorelick
2005, Water Resources Research (41)
Groundwater consumption by phreatophytes is a difficult‐to‐measure but important component of the water budget in many arid and semiarid environments. Over the past 70 years the consumptive use of groundwater by phreatophytes has been estimated using a method that analyzes diurnal trends in hydrographs from wells that are screened across...
Species abundance in a forest community in South China: A case of poisson lognormal distribution
Z.-Y. Yin, H. Ren, Q.-M. Zhang, S.-L. Peng, Q.-F. Guo, G.-Y. Zhou
2005, Journal of Integrative Plant Biology (47) 801-810
Case studies on Poisson lognormal distribution of species abundance have been rare, especially in forest communities. We propose a numerical method to fit the Poisson lognormal to the species abundance data at an evergreen mixed forest in the Dinghushan Biosphere Reserve, South China. Plants in the tree, shrub and herb...
Field determination of optimal dates for the discrimination of invasive wetland plant species using derivative spectral analysis
M. Laba, F. Tsai, Danielle Ogurcak, S. Smith, M. E. Richmond
2005, Photogrammetric Engineering and Remote Sensing (71) 603-611
Mapping invasive plant species in aquatic and terrestrial ecosystems helps to understand the causes of their progression, manage some of their negative consequences, and control them. In recent years, a variety of new remote-sensing techniques, like Derivative Spectral Analysis (DSA) of hyperspectral data, have been developed to facilitate this mapping....
Vertical cross contamination of trichloroethylene in a borehole in fractured sandstone
S.N. Sterling, B.L. Parker, J. A. Cherry, J.H. Williams, J.W. Lane Jr., F.P. Haeni
2005, Ground Water (43) 557-573
Boreholes drilled through contaminated zones in fractured rock create the potential for vertical movement of contaminated ground water between fractures. The usual assumption is that purging eliminates cross contamination; however, the results of a field study conducted in a trichloroethylene (TCE) plume in fractured sandstone with...
Landscape resistance to frog movements
M. J. Mazerolle, A. Desrochers
2005, Canadian Journal of Zoology (83) 455-464
An animal's capacity to recolonize a patch depends on at least two components: its ability to detect the patch and its ability to reach it. However, the disruption of such processes by anthropic disturbances could explain low animal abundance patterns observed by many investigators in certain landscapes. Through field experiments,...
