Equilibrium shoreline response of a high wave energy beach
M.L. Yates, R.T. Guza, W. C. O’Reilly, J.E. Hansen, P.L. Barnard
2011, Journal of Geophysical Research C: Oceans (116)
Four years of beach elevation surveys at Ocean Beach, San Francisco, California, are used to extend an existing equilibrium shoreline change model, previously calibrated with fine sand and moderate energy waves, to medium sand and higher-energy waves. The shoreline, characterized as the cross-shore location of the mean high water contour,...
Developing a Scenario for widespread use: Best practices, lessons learned
S. Perry, L. Jones, D. Cox
2011, Earthquake Spectra (27) 263-272
The ShakeOut Scenario is probably the most widely known and used earthquake scenario created to date. Much of the credit for its widespread dissemination and application lies with scenario development criteria that focused on the needs and involvement of end users and with a suite of products that tailored communication...
Terrestrial, benthic, and pelagic resource use in lakes: Results from a three-isotope Bayesian mixing model
C.T. Solomon, S.R. Carpenter, M.K. Clayton, J. J. Cole, J.J. Coloso, M. L. Pace, M. J. Vander Zanden, B.C. Weidel
2011, Ecology (92) 1115-1125
Fluxes of organic matter across habitat boundaries are common in food webs. These fluxes may strongly influence community dynamics, depending on the extent to which they are used by consumers. Yet understanding of basal resource use by consumers is limited, because describing trophic pathways in complex food webs is difficult....
Probabilistic estimates of number of undiscovered deposits and their total tonnages in permissive tracts using deposit densities
Donald A. Singer, Ryoichi Kouda
2011, Natural Resources Research (20) 89-93
Empirical evidence indicates that processes affecting number and quantity of resources in geologic settings are very general across deposit types. Sizes of permissive tracts that geologically could contain the deposits are excellent predictors of numbers of deposits. In addition, total ore tonnage of mineral deposits of a particular type...
Changes in agricultural cropland areas between a water-surplus year and a water-deficit year impacting food security, determined using MODIS 250 m time-series data and spectral matching techniques, in the Krishna river basin (India)
Murali Krishna Gumma, Prasad S. Thenkabail, I.V. Muralikrishna, Naga Manohar Velpuri, P.T. Gangadhararao, V. Dheeravath, C.M. Biradar, S.A. Nalan, A. Gaur
2011, International Journal of Remote Sensing (32) 3495-3520
The objective of this study was to investigate the changes in cropland areas as a result of water availability using Moderate Resolution Imaging Spectroradiometer (MODIS) 250 m time-series data and spectral matching techniques (SMTs). The study was conducted in the Krishna River basin in India, a very large river basin...
Viral replication in excised fin tissues (VREFT) corresponds with prior exposure of Pacific herring, Clupea pallasii (Valenciennes), to viral haemorrhagic septicaemia virus (VHSV)
C.A. Grady, J.L. Gregg, R.M. Wade, J. R. Winton, P.K. Hershberger
2011, Journal of Fish Diseases (34) 3-12
Procedures for a viral replication in excised fin tissue (VREFT) assay were adapted to Pacific herring, Clupea pallasii, and optimized both to reduce processing time and to provide the greatest resolution between na??ve herring and those previously exposed to viral haemorrhagic septicaemia virus (VHSV), Genogroup IVa. The optimized procedures included...
Estimating equivalence with quantile regression
B.S. Cade
2011, Ecological Applications (21) 281-289
Equivalence testing and corresponding confidence interval estimates are used to provide more enlightened statistical statements about parameter estimates by relating them to intervals of effect sizes deemed to be of scientific or practical importance rather than just to an effect size of zero. Equivalence tests and confidence interval estimates are...
Devonian and carboniferous arcs of the oyu tolgoi porphyry Cu-Au district, South Gobi region, Mongolia
A.J. Wainwright, R. M. Tosdal, C.N. Forster, D.J. Kirwin, P.D. Lewis, J. L. Wooden
2011, Geological Society of America Bulletin (123) 306-328
The Central Asian orogenic belt consists of microcontinental blocks and mobile belts positioned between the Siberian craton and the Tarim and North China cratons. Extending across Asia for 5000 km, the belt consists of terranes that decrease in age southward away from the Siberian craton. A time-stratigraphic-structural sequence for the...
Assessment of field-related influences on polychlorinated biphenyl exposures and sorbent amendment using polychaete bioassays and passive sampler measurements
E.M. Janssen, A.M. Oen, Samuel N. Luoma, R.G. Luthy
2011, Environmental Toxicology and Chemistry (30) 173-180
Field-related influences on polychlorinated biphenyl (PCB) exposure were evaluated by employing caged deposit-feeders, Neanthes arenaceodentata, along with polyoxymethylene (POM) samplers using parallel in situ and ex situ bioassays with homogenized untreated or activated carbon (AC) amended sediment. The AC amendment achieved a remedial efficiency in reducing bioaccumulation by 90% in...
Age, genesis, and paleoclimatic interpretation of the Sangamon/Loveland complex in the Lower Mississippi Valley, USA
H. W. Markewich, D.A. Wysocki, M.J. Pavich, E.M. Rutledge
2011, Geological Society of America Bulletin (123) 21-39
For more than a century, the Sangamon paleosol (the Sangamon) has been an integral part of geologic and pedologic investigations in the central United States, including the Upper Mississippi and Lower Missouri River Valleys. Compositional, pedologic, micromorphologic, stratigraphic, and age data indicate that the prominent reddish paleosol developed in silt-rich...
U.S. Department of Energy's regional carbon sequestration partnership initiative: Update on validation and development phases
T. Rodosta, J. Litynski, S. Plasynski, L. Spangler, R. Finley, E. Steadman, D. Ball, H. Gerald, B. McPherson, E. Burton, D. Vikara
2011, Conference Paper, Energy Procedia
The U.S. Department of Energy (DOE) is the lead federal agency for the development and deployment of carbon sequestration technologies. The Regional Carbon Sequestration Partnerships (RCSPs) are the mechanism DOE utilizes to prove the technology and to develop human capital, stakeholder networks, information for regulatory policy, best practices documents and...
Response to comment on "pAHs underfoot: Contaminated dust from coal-tar sealcoated pavement is widespread in the U.S."
Peter C. Van Metre, Barbara Mahler
2011, Environmental Science & Technology (45) 3187-3188
No abstract available....
Lagrangian mass-flow investigations of inorganic contaminants in wastewater-impacted streams
L. B. Barber, Ronald C. Antweiler, J.L. Flynn, S.H. Keefe, D.W. Kolpin, D.A. Roth, D.J. Schnoebelen, Howard E. Taylor, P. L. Verplanck
2011, Environmental Science & Technology (45) 2575-2583
Understanding the potential effects of increased reliance on wastewater treatment plant (WWTP) effluents to meet municipal, agricultural, and environmental flow requires an understanding of the complex chemical loading characteristics of the WWTPs and the assimilative capacity of receiving waters. Stream ecosystem effects are linked to proportions of WWTP effluent under...
Managing and learning with multiple models: Objectives and optimization algorithms
William J. M. Probert, C.E. Hauser, E. McDonald-Madden, M.C. Runge, P.W.J. Baxter, H.P. Possingham
2011, Biological Conservation (144) 1237-1245
The quality of environmental decisions should be gauged according to managers' objectives. Management objectives generally seek to maximize quantifiable measures of system benefit, for instance population growth rate. Reaching these goals often requires a certain degree of learning about the system. Learning can occur by using management action in combination...
Sources and physical processes responsible for OH/H2O in the lunar soil as revealed by the Moon Mineralogy Mapper (M3)
T. B. McCord, L.A. Taylor, J. #NAME? Combe, G. Kramer, C.M. Pieters, J.M. Sunshine, R. N. Clark
2011, Journal of Geophysical Research E: Planets (116)
Analysis of two absorption features near 3 m in the lunar reflectance spectrum, observed by the orbiting M3 spectrometer and interpreted as being due to OH and H2O, is presented, and the results are used to discuss the processes producing these molecules. This analysis focuses on the dependence of the...
Anthropogenic influences on shoreline and nearshore evolution in the San Francisco Bay coastal system
K.L. Dallas, P.L. Barnard
2011, Estuarine, Coastal and Shelf Science (92) 195-204
Analysis of four historical bathymetric surveys over a 132-year period has revealed significant changes to the morphology of the San Francisco Bar, an ebb-tidal delta at the mouth of San Francisco Bay estuary. From 1873 to 2005 the San Francisco Bar vertically-eroded an average of 80 cm over a 125...
Recovery and reprocessing of legacy geophysical data from the archives of the State Company of Geology and Mining (GEOSURV) of Iraq and Iraq Petroleum Company (IPC)
David V. Smith, Benjamin J. Drenth, J.D. Fairhead, K. Lei, J.A. Dark, K. Al-Bassam
2011, SEG Technical Program Expanded Abstracts (30) 856-860
Aeromagnetic data belonging to the State Company of Geology and Mining of Iraq (GEOSURV) have been recovered from magnetic tapes and early paper maps. In 1974 a national airborne survey was flown by the French firm Compagnie General de Geophysique (CGG). Following the survey the magnetic data were stored on...
8 March 2010 Elazığ-Kovancilar (Turkey) Earthquake: observations on ground motions and building damage
Sinan Akkar, A. Aldemir, A. Askan, S. Bakir, E. Canbay, I.O. Demirel, M.A. Erberik, Z. Gulerce, Polat Gulkan, Erol Kalkan, S. Prakash, M.A. Sandikkaya, V. Sevilgen, B. Ugurhan, E. Yenier
2011, Seismological Research Letters (82) 42-58
An earthquake of MW = 6.1 occurred in the Elazığ region of eastern Turkey on 8 March 2010 at 02:32:34 UTC. The United States Geological Survey (USGS) reported the epicenter of the earthquake as 38.873°N-39.981°E with a focal depth of 12 km. Forty-two people lost their lives and 137 were injured during...
Climate change, uncertainty, and natural resource management
J.D. Nichols, M.D. Koneff, P.J. Heglund, M. G. Knutson, M.E. Seamans, J. E. Lyons, J.M. Morton, M.T. Jones, G.S. Boomer, B. Kenneth Williams
2011, Journal of Wildlife Management (75) 6-18
Climate change and its associated uncertainties are of concern to natural resource managers. Although aspects of climate change may be novel (e.g., system change and nonstationarity), natural resource managers have long dealt with uncertainties and have developed corresponding approaches to decision-making. Adaptive resource management is an application of structured decision-making...
Hierarchical modeling of an invasive spread: The eurasian collared-dove streptopelia decaocto in the United States
F. Bled, J. Andrew Royle, E. Cam
2011, Ecological Applications (21) 290-302
Invasive species are regularly claimed as the second threat to biodiversity. To apply a relevant response to the potential consequences associated with invasions (e.g., emphasize management efforts to prevent new colonization or to eradicate the species in places where it has already settled), it is essential to understand invasion mechanisms...
Implications of chronic wasting disease, cougar predation, and reduced recruitment for elk management
G.A. Sargeant, D.C. Weber, D.E. Roddy
2011, Journal of Wildlife Management (75) 171-177
Emerging diseases and expanding carnivore populations may have profound implications for ungulate harvest management and population regulation. To better understand effects of chronic wasting disease (CWD) and cougar (Puma concolor) predation, we studied mortality and recruitment of elk (Cervus elaphus) at Wind Cave National Park (WICA) during 2005-2009. We marked...
Past and ongoing shifts in Joshua tree distribution support future modeled range contraction
Kenneth L. Cole, Kirsten Ironside, Jon K. Eischeid, Gregg Garfin, Phil Duffy, Chris Toney
2011, Ecological Applications (21) 137-149
The future distribution of the Joshua tree (Yucca brevifolia) is projected by combining a geostatistical analysis of 20th-century climates over its current range, future modeled climates, and paleoecological data showing its response to a past similar climate change. As climate rapidly warmed ;11 700 years ago, the range of Joshua...
Long-term increases in young-of-the-year growth of Arctic cisco Coregonus autumnalis and environmental influences
Vanessa R. von Biela, Christian E. Zimmerman, L.L. Moulton
2011, Journal of Fish Biology (78) 39-56
Arctic cisco Coregonus autumnalis young‐of‐year (YOY) growth was used as a proxy to examine the long‐term response of a high‐latitude fish population to changing climate from 1978 to 2004. YOY growth increased over time (r2 = 0·29) and was correlated with monthly averages of the Arctic oscillation index, air temperature, east wind speed,...
Imaging using cross-hole seismoelectric tomography
A.H. Araji, A. Revil, A. Jardani, B. Minsley
2011, SEG Technical Program Expanded Abstracts (30) 469-473
We propose a new cross-hole imaging approach based on seismoelectric conversions associated with the transmission of seismic waves from seismic sources located in a borehole to receivers electrodes located in a second borehole. The seismoelectric seismic-to-electric problem is solved using Biot theory coupled with a generalized Ohm's law with an...
Lunar mare deposits associated with the Orientale impact basin: New insights into mineralogy, history, mode of emplacement, and relation to Orientale Basin evolution from Moon Mineralogy Mapper (M3) data from Chandrayaan-1
J. Whitten, J.W. Head, M. Staid, C.M. Pieters, J. Mustard, R. Clark, J. Nettles, R.L. Klima, L. Taylor
2011, Journal of Geophysical Research E: Planets (116) 1-33
Moon Mineralogy Mapper (M3) image and spectral reflectance data are combined to analyze mare basalt units in and adjacent to the Orientale multiring impact basin. Models are assessed for the relationships between basin formation and mare basalt emplacement. Mare basalt emplacement on the western nearside limb began prior to the...
