Grizzly Valley fault system, Sierra Valley, CA
Ryan Gold, William Stephenson, Jack Odum, Rich Briggs, Anthony Crone, Steve Angster
2012, Report, Guidebook: neotectonics of the Lake Tahoe and Carson and Sierra Valleys, F.O.P. 2012
The Grizzly Valley fault system (GVFS) strikes northwestward across Sierra Valley, California and is part of a network of active, dextral strike-slip faults in the northern Walker Lane (Figure 1). To investigate Quaternary motion across the GVFS, we analyzed high-resolution (0.25 m) airborne LiDAR data (Figure 2) in combination with...
Advances in carbonate exploration and reservoir analysis
J. Garland, J. Neilson, S.E. Laubach, Katherine J. Whidden
2012, Geological Society Special Publication (370) 1-15
The development of innovative techniques and concepts, and the emergence of new plays in carbonate rocks are creating a resurgence of oil and gas discoveries worldwide. The maturity of a basin and the application of exploration concepts have a fundamental influence on exploration strategies. Exploration success often occurs in underexplored...
Navigational inlets are conduits for land-based sources of pollution
J.C. Flutch, Dale W. Griffin, Erin K. Lipp
2012, Book chapter, Tropical connections: south Florida's marine environment
No abstract available....
Pathogenic human viruses are present in residential canals
Dale W. Griffin
2012, Book chapter, Tropical connections: south Florida's marine environment
No abstract available....
Upper Klamath Basin Landsat Image for September 20, 2006: Path 44 Row 31
Daniel T. Snyder
2012, Report
This subset of a Landsat-5 image shows part of the upper Klamath Basin. The original images were obtained from the U.S. Geological Survey Earth Resources Observation and Science Center (EROS). EROS is responsible for archive management and distribution of Landsat data products. The Landsat-5 satellite is part of an ongoing...
Upper Klamath Basin Landsat Image for August 29, 2004: Path 44 Row 31
Daniel T. Snyder
2012, Report
This subset of a Landsat-5 image shows part of the upper Klamath Basin. The original images were obtained from the U.S. Geological Survey Earth Resources Observation and Science Center (EROS). EROS is responsible for archive management and distribution of Landsat data products. The Landsat-5 satellite is part of an ongoing...
Crop classification modelling using remote sensing and environmental data in the Greater Platte River Basin, USA
Daniel M. Howard, Bruce K. Wylie, Larry L. Tieszen
2012, International Journal of Remote Sensing (33) 6094-6108
With an ever expanding population, potential climate variability and an increasing demand for agriculture-based alternative fuels, accurate agricultural land-cover classification for specific crops and their spatial distributions are becoming critical to researchers, policymakers, land managers and farmers. It is important to ensure the sustainability of these and other land uses...
Elevated CO2 did not mitigate the effect of a short-term drought on biological soil crusts
Timothy M. Wertin, Susan L. Phillips, Sasha C. Reed, Jayne Belnap
2012, Biology and Fertility of Soils (48) 797-805
Biological soil crusts (biocrusts) are critical components of arid and semi-arid ecosystems that contribute significantly to carbon (C) and nitrogen (N) fixation, water retention, soil stability, and seedling recruitment. While dry-land ecosystems face a number of environmental changes, our understanding of how biocrusts may respond to such perturbation remains notably...
Empirical methods for detecting regional trends and other spatial expressions in antrim shale gas productivity, with implications for improving resource projections using local nonparametric estimation techniques
Timothy C. Coburn, Philip A. Freeman, Emil D. Attanasi
2012, Natural Resources Research (21) 1-21
The primary objectives of this research were to (1) investigate empirical methods for establishing regional trends in unconventional gas resources as exhibited by historical production data and (2) determine whether or not incorporating additional knowledge of a regional trend in a suite of previously established local nonparametric resource prediction algorithms...
Effects of sample size, number of markers, and allelic richness on the detection of spatial genetic pattern
E.L. Landguth, B.C. Fedy, Sara J. Oyler-McCance, A.L. Garey, S.L. Emel, M. Mumma, H.H. Wagner, M.-J. Fortin, S.A. Cushman
2012, Molecular Ecology Resources (12) 276-284
The influence of study design on the ability to detect the effects of landscape pattern on gene flow is one of the most pressing methodological gaps in landscape genetic research. To investigate the effect of study design on landscape genetics inference, we used a spatially‐explicit, individual‐based program to simulate gene...
Do environmental changes or juvenile competition act as mechanisms of species displacement in crayfishes?
Jacob T. Westhoff, R.J. DiStefano, Daniel D. Magoulick
2012, Hydrobiologia (683) 43-51
The Big Creek Crayfish, Orconectes peruncus, is native to the St. Francis River drainage in Missouri, USA and is often absent where the introduced Woodland Crayfish, Orconectes hylas, has established. We performed a field experiment to determine whether effects of current abiotic conditions and interspecific competition with O. hylas were responsible for displacement of O....
Landscape controls on the timing of spring, autumn, and growing season length in mid-Atlantic forests
A.J. Elmore, S.M. Guinn, B. J. Minsley, A.D. Richardson
2012, Global Change Biology (18) 656-674
The timing of spring leaf development, trajectories of summer leaf area, and the timing of autumn senescence have profound impacts to the water, carbon, and energy balance of ecosystems, and are likely influenced by global climate change. Limited field-based and remote-sensing observations have suggested complex spatial patterns related to geographic...
Tectonic setting of Cretaceous basins on the NE Tibetan Plateau: Insights from the Jungong basin
William Craddock, E. Kirby, Z. Dewen, L. Jianhui
2012, Basin Research (24) 51-69
Quantifying the Cenozoic growth of high topography in the Indo‐Asian collision zone remains challenging, due in part to significant shortening that occurred within Eurasia before collision. A growing body of evidence suggests that regions far removed from the suture zone experienced deformation before and during the early phases of Himalayan...
The unexpected discovery of blind snakes (Serpentes: Typhlopidae) in Micronesia: Two new species of Ramphotyphlops from the Caroline Islands
A.H. Wynn, R.P. Reynolds, D.W. Buden, M. Falanruw, B. Lynch
2012, Zootaxa 39-54
Two new blind snakes in the genus Ramphotyphlops are described from Ulithi (R. hatmaliyeb sp. nov.) and Ant Atoll (R. adocetus sp. nov.) in the Caroline Islands, the first blind snake species known from Micronesia east of Palau (excluding Ramphotyphlops braminus). Both species are unusual in being known only from...
Evaluating Re-Os systematics in organic-rich sedimentary rocks in response to petroleum generation using hydrous pyrolysis experiments
A.D. Rooney, D. Selby, M. D. Lewan, P. G. Lillis, J.-P. Houzay
2012, Geochimica et Cosmochimica Acta (77) 275-291
Successful application of the 187Re–187Os geochronometer has enabled the determination of accurate and precise depositional ages for organic-rich sedimentary rocks (ORS) as well as establishing timing constraints of petroleum generation. However, we do not fully understand the systematics and transfer behaviour of Re and Os between ORS and petroleum products...
Mineral parageneses, regional architecture, and tectonic evolution of Franciscan metagraywackes, Cape Mendocino-Garberville-Covelo 30' x 60' quadrangles, northwest California
W. G. Ernst, Robert J. McLaughlin
2012, Tectonics (31)
The Franciscan Complex is a classic subduction-zone assemblage. In northwest California, it comprises a stack of west vergent thrust sheets: westernmost Eastern Belt outliers; Central Belt mélange; Coastal Belt Yager terrane; Coastal Belt Coastal terrane; Coastal Belt King Range/False Cape terranes. We collected samples and determined P-T conditions of recrystallization...
Photodissolution of soil organic matter
L.M. Mayer, K.R. Thornton, L.L. Schick, J.D. Jastrow, Jennifer W. Harden
2012, Geoderma (170) 314-321
Sunlight has been shown to enhance loss of organic matter from aquatic sediments and terrestrial plant litter, so we tested for similar reactions in mineral soil horizons. Losses of up to a third of particulate organic carbon occurred after continuous exposure to full-strength sunlight for dozens of hours, with similar...
Exploring mechanisms underlying sex-specific differences in mortality of Lake Michigan bloaters
D.B. Bunnell, C.P. Madenjian, M.W. Rogers, J.D. Holuszko, L.J. Begnoche
2012, Transactions of the American Fisheries Society (141) 204-214
Sex-specific differences in mortality rates have been observed among freshwater and marine fish taxa, and underlying mechanisms can include sex-specific differences in (1) age at maturity, (2) growth rate, or (3) activity or behavior during the spawning period. We used a long-term (1973–2009) Lake Michigan data set to evaluate whether...
SYBR green-based real-time reverse transcription-PCR for typing and subtyping of all hemagglutinin and neuraminidase genes of avian influenza viruses and comparison to standard serological subtyping tests
K. Tsukamoto, P.C. Javier, M. Shishido, D. Noguchi, John M. Pearce, H.-M. Kang, O.M. Jeong, Y.-J. Lee, K. Nakanishi, T. Ashizawa
2012, Journal of Clinical Microbiology (50) 37-45
Continuing outbreaks of H5N1 highly pathogenic (HP) avian influenza virus (AIV) infections of wild birds and poultry worldwide emphasize the need for global surveillance of wild birds. To support the future surveillance activities, we developed a SYBR green-based, real-time reverse transcriptase PCR (rRT-PCR) for detecting nucleoprotein (NP) genes and subtyping...
Determination of sediment provenance by unmixing the mineralogy of source-area sediments: The "SedUnMix" program
John T. Andrews, D. D. Eberl
2012, Marine Geology (291-294) 24-33
Along the margins of areas such as Greenland and Baffin Bay, sediment composition reflects a complex mixture of sources associated with the transport of sediment in sea ice, icebergs, melt-water and turbidite plumes. Similar situations arise in many contexts associated with sediment transport and with the mixing of sediments from...
Titan's fluvial valleys: Morphology, distribution, and spectral properties
M.H. Langhans, R. Jaumann, K. Stephan, R. H. Brown, B. J. Buratti, Roger N. Clark, K. H. Baines, P. D. Nicholson, R. D. Lorenz, Laurence A. Soderblom, J.M. Soderblom, Christophe Sotin, J. W. Barnes, R. Nelson
2012, Planetary and Space Science (60) 34-51
Titan's fluvial channels have been investigated based on data obtained by the Synthetic Aperture Radar (SAR) instrument and the Visible and Infrared Mapping Spectrometer (VIMS) onboard the Cassini spacecraft. In this paper, a database of fluvial features is created based on radar-SAR data aiming to unveil the distribution and the...
Evidence for earthquake triggering of large landslides in coastal Oregon, USA
W.H. Schulz, S.L. Galloway, J.D. Higgins
2012, Geomorphology (141-142) 88-98
Landslides are ubiquitous along the Oregon coast. Many are large, deep slides in sedimentary rock and are dormant or active only during the rainy season. Morphology, observed movement rates, and total movement suggest that many are at least several hundreds of years old. The offshore Cascadia subduction zone produces great...
El Niño-Southern oscillation variability from the late cretaceous marca shale of California
Andrew Davies, Alan E.S. Kemp, Graham P. Weedon, John A. Barron
2012, Geology (40) 15-18
Changes in the possible behavior of El Niño–Southern Oscillation (ENSO) with global warming have provoked interest in records of ENSO from past “greenhouse” climate states. The latest Cretaceous laminated Marca Shale of California permits a seasonal-scale reconstruction of water column flux events and hence interannual paleoclimate variability. The annual flux...
Mapping ground surface deformation using temporarily coherent point SAR interferometry: Application to Los Angeles Basin
L. Zhang, Zhong Lu, X. Ding, H.-S. Jung, G. Feng, C.-W. Lee
2012, Remote Sensing of Environment (117) 429-439
Multi-temporal interferometric synthetic aperture radar (InSAR) is an effective tool to detect long-term seismotectonic motions by reducing the atmospheric artifacts, thereby providing more precise deformation signal. The commonly used approaches such as persistent scatterer InSAR (PSInSAR) and small baseline subset (SBAS) algorithms need to resolve the phase ambiguities in interferogram...
Advancing representation of hydrologic processes in the Soil and Water Assessment Tool (SWAT) through integration of the TOPographic MODEL (TOPMODEL) features
J. Chen, Y. Wu
2012, Journal of Hydrology (420-421) 319-328
This paper presents a study of the integration of the Soil and Water Assessment Tool (SWAT) model and the TOPographic MODEL (TOPMODEL) features for enhancing the physical representation of hydrologic processes. In SWAT, four hydrologic processes, which are surface runoff, baseflow, groundwater re-evaporation and deep aquifer percolation, are modeled by...
