Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16902
Geology of the western Piedmont in Virginia Geology of the western Piedmont in Virginia
No abstract available.
Authors
James P. Hibbard, James S. Beard, William S. Henika, J. Wright Horton
Temperature response of soil respiration largely unaltered with experimental warming Temperature response of soil respiration largely unaltered with experimental warming
The respiratory release of carbon dioxide (CO2) from soil is a major yet poorly understood flux in the global carbon cycle. Climatic warming is hypothesized to increase rates of soil respiration, potentially fueling further increases in global temperatures. However, despite considerable scientific attention in recent decades, the overall response of soil respiration to anticipated...
Authors
Joanna C. Carey, Jianwu Tang, Pamela H. Templer, Kevin D. Kroeger, Thomas W. Crowther, Andrew J. Burton, Jeffrey S. Dukes, Bridget Emmett, Serita D. Frey, Mary A. Heskel, Lifen Jiang, Megan B. Machmuller, Jacqueline Mohan, Anne Marie Panetta, Peter B. Reich, Sabine Reinsch, Xin Wang, Steven D. Allison, Chris Bamminger, Scott D. Bridgham, Scott L. Collins, Giovanbattista de Dato, William C. Eddy, Brian J. Enquist, Marc Estiarte, John Harte, Amanda Henderson, Bart R. Johnson, Klaus Steenberg Larsen, Yiqi Luo, Sven Marhan, Jerry M. Melillo, Josep Penuelas, Laurel Pfeifer-Meister, Christian Poll, Edward B. Rastetter, Andrew B. Reinmann, Lorien L. Reynolds, Inger K. Schmidt, Gaius R. Shaver, Aaron L. Strong, Vidya Suseela, Albert Tietema
Simple, efficient allocation of modelling runs on heterogeneous clusters with MPI Simple, efficient allocation of modelling runs on heterogeneous clusters with MPI
In scientific modelling and computation, the choice of an appropriate method for allocating tasks for parallel processing depends on the computational setting and on the nature of the computation. The allocation of independent but similar computational tasks, such as modelling runs or Monte Carlo trials, among the nodes of a heterogeneous computational cluster is a special case that has...
Authors
David I. Donato
Observations of pockmark flow structure in Belfast Bay, Maine, Part 1: current-induced mixing Observations of pockmark flow structure in Belfast Bay, Maine, Part 1: current-induced mixing
Field observations of current profiles and temperature, salinity, and density structure were used to examine vertical mixing within two pockmarks in Belfast Bay, Maine. The first is located in 21 m water depth (sea level to rim), nearly circular in shape with a 45 m rim diameter and 12 m rim-to-bottom relief. The second is located in 25 m water depth, more elongated in shape with an...
Authors
Christina L. Fandel, Thomas C. Lippmann, James D. Irish, Laura L. Brothers
Trace elements at the intersection of marine biological and geochemical evolution Trace elements at the intersection of marine biological and geochemical evolution
Life requires a wide variety of bioessential trace elements to act as structural components and reactive centers in metalloenzymes. These requirements differ between organisms and have evolved over geological time, likely guided in some part by environmental conditions. Until recently, most of what was understood regarding trace element concentrations in the Precambrian oceans was...
Authors
Leslie J. Robbins, Stefan V. Lalonde, Noah J. Planavsky, Camille A. Partin, Christopher T. Reinhard, Brian Kendall, Clint Scott, Dalton S. Hardisty, Benjamin C. Gill, Daniel S. Alessi, Christopher L. Dupont, Mak A. Saito, Sean A. Crowe, Simon W. Poulton, Andrey Bekker, Timothy Lyons, Kurt O. Konhauser
Abiotic raw-materials in life cycle impact assessments: An emerging consensus across disciplines Abiotic raw-materials in life cycle impact assessments: An emerging consensus across disciplines
This paper captures some of the emerging consensus points that came out of the workshop “Mineral Resources in Life Cycle Impact Assessment: Mapping the path forward”, held at the Natural History Museum London on 14 October 2015: that current practices rely in many instances on obsolete data, often confuse resource depletion with impacts on resource availability, which can therefore...
Authors
Johannes Drielsma, Ruth Allington, Thomas Brady, Jeroen Guinee, Jane M. Hammarstrom, Torsten Hummen, Andrea Russell-Vaccari, Laura Schneider, Guido Sonnemann, Par Weihed
Managing climate change refugia for climate adaptation Managing climate change refugia for climate adaptation
Refugia have long been studied from paleontological and biogeographical perspectives to understand how populations persisted during past periods of unfavorable climate. Recently, researchers have applied the idea to contemporary landscapes to identify climate change refugia, here defined as areas relatively buffered from contemporary climate change over time that enable persistence of...
Authors
Toni L. Morelli, Stephen T. Jackson
Assessment of trace element accumulation by earthworms in an orchard soil remediation study using soil amendments Assessment of trace element accumulation by earthworms in an orchard soil remediation study using soil amendments
This study assessed potential bioaccumulation of various trace elements in grasses and earthworms as a consequence of soil incorporation of organic amendments for in situ remediation of an orchard field soil contaminated with organochlorine and Pb pesticide residues. In this experiment, four organic amendments of differing total organic carbon content and quality (two types of composted...
Authors
Tiziana Centofantia, Rufus L. Chaney, W. Nelson Beyer, Laura L. McConnell, A. P. Davis, Dana Jackson
Modeling the effects of land cover and use on landscape capability for urban ungulate populations Modeling the effects of land cover and use on landscape capability for urban ungulate populations
Expanding ungulate populations are causing concerns for wildlife professionals and residents in many urban areas worldwide. Nowhere is the phenomenon more apparent than in the eastern US, where urban white-tailed deer (Odocoileus virginianus) populations are increasing. Most habitat suitability models for deer have been developed in rural areas and across large (>1000 km2) spatial...
Authors
H. Brian Underwood, Chellby R. Kilheffer
Geochemistry, Nd-Pb Isotopes, and Pb-Pb Ages of the Mesoproterozoic Pea Ridge Iron Oxide-Apatite–Rare Earth Element Deposit, Southeast Missouri Geochemistry, Nd-Pb Isotopes, and Pb-Pb Ages of the Mesoproterozoic Pea Ridge Iron Oxide-Apatite–Rare Earth Element Deposit, Southeast Missouri
Iron oxide-apatite and iron oxide-copper-gold deposits occur within ~1.48 to 1.47 Ga volcanic rocks of the St. Francois Mountains terrane near a regional boundary separating crustal blocks having contrasting depleted-mantle Sm-Nd model ages (TDM). Major and trace element analyses and Nd and Pb isotope data were obtained to characterize the Pea Ridge deposit, improve identification of...
Authors
Robert A. Ayuso, John F. Slack, Warren C. Day, Anne E. McCafferty
Creating a Coastal National Elevation Database (CoNED) for science and conservation applications Creating a Coastal National Elevation Database (CoNED) for science and conservation applications
The U.S. Geological Survey is creating the Coastal National Elevation Database, an expanding set of topobathymetric elevation models that extend seamlessly across coastal regions of high societal or ecological significance in the United States that are undergoing rapid change or are threatened by inundation hazards. Topobathymetric elevation models are raster datasets useful for...
Authors
Cindy A. Thatcher, John Brock, Jeffrey J. Danielson, Sandra K. Poppenga, Dean B. Gesch, Monica Palaseanu-Lovejoy, John Barras, Gayla A. Evans, Ann Gibbs
Geology of the eastern Piedmont in Virginia Geology of the eastern Piedmont in Virginia
No abstract available.
Authors
J. Wright Horton, Brent E. Owens, Paul C. Hackley, William C. Burton, Paul E. Sacks, James P. Hibbard