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Page 735, results 18351 - 18375

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Reclaimed mineland curve number response to temporal distribution of rainfall
R.C. Warner, C.T. Agouridis, P.T. Vingralek, A.W. Fogle
2010, Journal of the American Water Resources Association (46) 724-732
The curve number (CN) method is a common technique to estimate runoff volume, and it is widely used in coal mining operations such as those in the Appalachian region of Kentucky. However, very little CN data are available for watersheds disturbed by surface mining and then reclaimed using traditional techniques....
Land-use pressure and a transition to forest-cover loss in the Eastern United States
Mark A. Drummond, Thomas R. Loveland
2010, BioScience (60) 286-298
Contemporary land-use pressures have a significant impact on the extent and condition of forests in the eastern United States, causing a regional-scale decline in forest cover. Earlier in the 20th century, land cover was on a trajectory of forest expansion that followed agricultural abandonment. However, the potential for forest regeneration...
River solute fluxes reflecting active hydrothermal chemical weathering of the Yellowstone Plateau Volcanic Field, USA
S. Hurwitz, William C. Evans, J. B. Lowenstern
2010, Chemical Geology (276) 331-343
In the past few decades numerous studies have quantified the load of dissolved solids in large rivers to determine chemical weathering rates in orogenic belts and volcanic areas, mainly motivated by the notion that over timescales greater than ~100kyr, silicate hydrolysis may be the dominant sink for atmospheric CO2, thus...
Evaluation of the use of performance reference compounds in an oasis-HLB adsorbent based passive sampler for improving water concentration estimates of polar herbicides in freshwater
N. Mazzella, S. Lissalde, S. Moreira, F. Delmas, P. Mazellier, J.N. Huckins
2010, Environmental Science & Technology (44) 1713-1719
Passive samplers such as the Polar Organic Chemical Integrative Sampler (POCIS) are useful tools for monitoring trace levels of polar organic chemicals in aquatic environments. The use of performance reference compounds (PRC) spiked into the POCIS adsorbent for in situ calibration may improve the semiquantitative nature of water concentration estimates...
Structural analysis of three extensional detachment faults with data from the 2000 Space-Shuttle Radar Topography Mission
J.E. Spencer
2010, GSA Today (20) 4-10
The Space-Shuttle Radar Topography Mission provided geologists with a detailed digital elevation model of most of Earth's land surface. This new database is used here for structural analysis of grooved surfaces interpreted to be the exhumed footwalls of three active or recently active extensional detachment faults. Exhumed fault footwalls, each...
Protocol for statistical analysis of vegetation changes at Catoctin Mountain Park
Jeff S. Hatfield, Cairn Krafft
2010, Natural Resource Report NPS/NCR/NCRO/NRTR2010/001
Vegetation data collected at Catoctin Mountain Park, Maryland, in a split-panel rotation design during 2004-2009 were analyzed for differences among three regions within the park and among years. Six plots were paired with plots fenced to exclude white-tailed deer (Odocoileus virginianus), and differences between open and exclosed plots were...
On the resolution of shallow mantle viscosity structure using post-earthquake relaxation data: Application to the 1999 Hector Mine, California, earthquake
Fred F. Pollitz, Wayne R. Thatcher
2010, Journal of Geophysical Research B: Solid Earth
Most models of lower crust/mantle viscosity inferred from postearthquake relaxation assume one or two uniform-viscosity layers. A few existing models possess apparently significant radially variable viscosity structure in the shallow mantle (e.g., the upper 200 km), but the resolution of such variations is not clear. We use a geophysical inverse...
Radiative forcing over the conterminous United States due to contemporary land cover land use change and sensitivity to snow and interannual albedo variability
Christopher A. Barnes, David P. Roy
2010, Journal of Geophysical Research: Biogeosciences (115) 1-14
Satellite-derived land cover land use (LCLU), snow and albedo data, and incoming surface solar radiation reanalysis data were used to study the impact of LCLU change from 1973 to 2000 on surface albedo and radiative forcing for 58 ecoregions covering 69% of the conterminous United States. A net positive surface...
Physical Habitat Characteristics on the North Fork Shenandoah River, VA in 2002-2003
Jennifer L. Krstolic, Donald C. Hayes, Peter M. Ruhl
2010, Report
This dataset was collected with a PLGR government-issue GPS, and through manual measurement in the field. Points were gathered while canoeing along the North Fork Shenandoah River. Each location marked a change in meso-scale habitat type. GPS points were supplemented with GIS-derived points in areas where manual...
Introduction: Tagging, telemetry, and marking compendium project
Keith S. Wolf, Stephen M. Waste
2010, PNAMP Report Series 2010-002-1
Goal and Objectives of the Compendium The goal of this compendium is to integrate profiles of on-going, individual, disparate efforts implementing the science of tagging, telemetry, and marking (TTM) into a compilation of experience to inform the development of fish population monitoring. This is accomplished by meeting the following objectives: • Provide...
Wind River water restoration, Annual report November 2008 to October 2009.
P.J. Connolly, I.G. Jezorek, C.S. Munz
2010, Report
This report summarizes work completed by U.S. Geological Survey’s Columbia River Research Laboratory (USGS-CRRL) in the Wind River subbasin during the period November 2008 through October 2009 under Bonneville Power Administration (BPA) contract 41038. Long term research in the Wind River has focused on assessments of steelhead/rainbow trout Oncorhynchus...
Monitoring on-orbit calibration stability of the Terra MODIS and Landsat 7 ETM+ sensors using pseudo-invariant test sites
G. Chander, X. Xiong, T. Choi, A. Angal
2010, Remote Sensing of Environment (114) 925-939
The ability to detect and quantify changes in the Earth's environment depends on sensors that can provide calibrated, consistent measurements of the Earth's surface features through time. A critical step in this process is to put image data from different sensors onto a common radiometric scale. This work focuses on...
Uncovering a latent multinomial: Analysis of mark-recapture data with misidentification
W.A. Link, J. Yoshizaki, L.L. Bailey, K. H. Pollock
2010, Biometrics (66) 178-185
Natural tags based on DNA fingerprints or natural features of animals are now becoming very widely used in wildlife population biology. However, classic capture-recapture models do not allow for misidentification of animals which is a potentially very serious problem with natural tags. Statistical analysis of misidentification processes is extremely difficult...
Reactive transport modeling to study changes in water chemistry induced by CO2 injection at the Frio-I Brine Pilot
T. Xu, Y.K. Kharaka, C. Doughty, B.M. Freifeld, T.M. Daley
2010, Chemical Geology (271) 153-164
To demonstrate the potential for geologic storage of CO2 in saline aquifers, the Frio-I Brine Pilot was conducted, during which 1600 tons of CO2 were injected into a high-permeability sandstone and the resulting subsurface plume of CO2 was monitored using a variety of hydrogeological, geophysical, and geochemical techniques. Fluid samples...
Silica in a Mars analog environment: Ka u Desert, Kilauea Volcano, Hawaii
K.D. Seelos, R. E. Arvidson, B.L. Jolliff, S.M. Chemtob, R.V. Morris, D. W. Ming, G.A. Swayze
2010, Journal of Geophysical Research E: Planets (115)
Airborne Visible/Near-Infrared Imaging Spectrometer (AVIRIS) data acquired over the Ka u Desert are atmospherically corrected to ground reflectance and used to identify the mineralogic components of relatively young basaltic materials, including 250-700 and 200-400 year old lava flows, 1971 and 1974 flows, ash deposits, and solfatara incrustations. To provide context,...
Nodeomics: Pathogen detection in vertebrate lymph nodes using meta-transcriptomics
Nicola E. Wittekindt, Abinash Padhi, Stephan C. Schuster, Ji Qi, Fangqing Zhao, Lynn P. Tomsho, Lindsay R. Kasson, Michael Packard, Paul C. Cross, Mary Poss
2010, PLoS (5) 1-10
The ongoing emergence of human infections originating from wildlife highlights the need for better knowledge of the microbial community in wildlife species where traditional diagnostic approaches are limited. Here we evaluate the microbial biota in healthy mule deer (Odocoileus hemionus) by analyses of lymph node meta-transcriptomes. cDNA libraries from five...
Protein expression and genetic structure of the coral Porites lobata in an environmentally extreme Samoan back reef: Does host genotype limit phenotypic plasticity?
D.J. Barshis, J.H. Stillman, R.D. Gates, R.J. Toonen, L.W. Smith, C. Birkeland
2010, Molecular Ecology (19) 1705-1720
The degree to which coral reef ecosystems will be impacted by global climate change depends on regional and local differences in corals' susceptibility and resilience to environmental stressors. Here, we present data from a reciprocal transplant experiment using the common reef building coral Porites lobata between a highly fluctuating back...
Mapping brucellosis increases relative to elk density using hierarchical Bayesian models
Paul C. Cross, Dennis M. Heisey, Brandon M. Scurlock, William H. Edwards, Angela Brennan, Michael R. Ebinger
2010, PLoS ONE (5) 1-9
The relationship between host density and parasite transmission is central to the effectiveness of many disease management strategies. Few studies, however, have empirically estimated this relationship particularly in large mammals. We applied hierarchical Bayesian methods to a 19-year dataset of over 6400 brucellosis tests of adult female elk (Cervus elaphus)...
Computer algorithm for analyzing and processing borehole strainmeter data
John O. Langbein
2010, Computers & Geosciences (36) 611-619
The newly installed Plate Boundary Observatory (PBO) strainmeters record signals from tectonic activity, Earth tides, and atmospheric pressure. Important information about tectonic processes may occur at amplitudes at and below tidal strains and pressure loading. If incorrect assumptions are made regarding the background noise in the strain data, then the...
Recruitment in a Colorado population of big brown bats: Breeding probabilities, litter size, and first-year survival
T. J. O'Shea, L.E. Ellison, D.J. Neubaum, M.A. Neubaum, C.A. Reynolds, R. A. Bowen
2010, Journal of Mammalogy (91) 418-428
We used markrecapture estimation techniques and radiography to test hypotheses about 3 important aspects of recruitment in big brown bats (Eptesicus fuscus) in Fort Collins, Colorado: adult breeding probabilities, litter size, and 1st-year survival of young. We marked 2,968 females with passive integrated transponder (PIT) tags at multiple sites during...