Using a composite grid approach in a complex coastal domain to estimate estuarine residence time
John C. Warner, W. Rockwell Geyer, Herman G. Arango
2010, Computers & Geosciences (36) 921-935
We investigate the processes that influence residence time in a partially mixed estuary using a three-dimensional circulation model. The complex geometry of the study region is not optimal for a structured grid model and so we developed a new method of grid connectivity. This involves a novel approach that allows...
Hydraulic alterations resulting from hydropower development in the Bonneville Reach of the Columbia River
James R. Hatten, Thomas R. Batt
2010, Northwest Science (84) 207-222
We used a two-dimensional (2D) hydrodynamic model to simulate and compare the hydraulic characteristics in a 74-km reach of the Columbia River (the Bonneville Reach) before and after construction of Bonneville Dam. For hydrodynamic modeling, we created a bathymetric layer of the Bonneville Reach from single-beam and multi-beam echo-sounder surveys,...
A hybrid finite-difference and analytic element groundwater model
Henk M. Haitjema, Daniel T. Feinstein, Randall J. Hunt, Maksym Gusyev
2010, Groundwater (48) 538-548
Regional finite-difference models tend to have large cell sizes, often on the order of 1–2 km on a side. Although the regional flow patterns in deeper formations may be adequately represented by such a model, the intricate surface water and groundwater interactions in the shallower layers are not. Several stream...
Climate change and climate systems influence and control the atmospheric dispersion of desert dust: implications for human health
Dale W. Griffin
Richard C. Ragaini, editor(s)
2010, Conference Paper, International Seminar on Nuclear War and Planetary Emergencies 42nd session
The global dispersion of desert dust through Earth’s atmosphere is greatly influenced by temperature. Temporal analyses of ice core data have demonstrated that enhanced dust dispersion occurs during glacial events. This is due to an increase in ice cover, which results in an increase in drier terrestrial cover. A shorter...
Potential mitigation approach to minimize salinity intrusion in the Lower Savannah River Estuary due to reduced controlled releases from Lake Thurmond
Paul Conrads, James M. Greenfield
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: existing and emerging issues
The Savannah River originates at the confluence of the Seneca and Tugaloo Rivers, near Hartwell, Ga. and forms the State boundary between South Carolina and Georgia. The J. Strom Thurmond Dam and Lake, located 187 miles upstream from the coast, is responsible for most of the flow regulation that affects...
Estimating salinity intrusion effects due to climate change along the Grand Strand of the South Carolina coast
Paul Conrads, Edwin A. Roehl Jr., Charles T. Sexton, Daniel L. Tufford, Gregory J. Carbone, Kristin Dow, John B. Cook
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
The ability of water-resource managers to adapt to future climatic change is especially challenging in coastal regions of the world. The East Coast of the United States falls into this category given the high number of people living along the Atlantic seaboard and the added strain on resources as populations...
Field evaluation of sediment-concentration errors arising from Non-Isokinetic intake efficiency in depth-integrating suspended-sediment bag samplers
Thomas A. Sabol, David J. Topping, Ronald E. Griffiths
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: existing and emerging issues
A chemostratigraphic method to determine the end of impact-related sedimentation at marine-target impact craters (Chesapeake Bay, Lockne, Tvären)
Jens Ormö, Andrew C. Hill, Jean M. Self-Trail
2010, Meteoritics and Planetary Science (45) 1206-1224
To better understand the impact cratering process and its environmental consequences at the local to global scale, it is important to know when in the geological record of an impact crater the impact-related processes cease. In many instances, this occurs with the end of early crater modification, leaving an obvious...
Microbial carbon cycling in oligotrophic regional aquifers near the Tono Uranium Mine, Japan as inferred from δ13C and Δ14C values of in situ phospholipid fatty acids and carbon sources
Christopher T. Mills, Yuki Amano, Gregory F. Slater, Robert F. Dias, Teruki Iwatsuki, Kevin W. Mandernack
2010, Geochimica et Cosmochimica Acta (74) 3785-3805
Microorganisms are ubiquitous in deep subsurface environments, but their role in the global carbon cycle is not well-understood. The natural abundance δ13C and Δ14C values of microbial membrane phospholipid fatty acids (PLFAs) were measured and used to assess the carbon sources of bacteria in sedimentary and granitic groundwaters sampled from...
National Wildlife Health Center's quarterly wildlife mortality report
Anne Ballmann, C. LeAnn White, Krysten Schuler, Jennifer Bradsby
2010, Wildlife Disease Association Newsletter 9-13
No abstract available....
In-Place Oil Shale Resources Underlying Federal Lands in the Piceance Basin, Western Colorado
Tracey J. Mercier, Ronald C. Johnson, Michael E. Brownfield, Jesse G. Self
2010, Fact Sheet 2010-3041
Using a geologic-based assessment methodology, the U.S. Geological Survey estimated an in-place oil shale resource of 1.07 trillion barrels under Federal mineral rights, or 70 percent of the total oil shale in place, in the Piceance Basin, Colorado. More than 67 percent of the total oil shale in-place resource, or...
Seismicity of the Earth 1900-2010, Aleutian arc and vicinity
Harley M. Benz, Matthew Herman, Arthur C. Tarr, Gavin P. Hayes, Kevin P. Furlong, Antonio Villaseñor, Richard L. Dart, Susan Rhea
2010, Open-File Report 2010-1083-B
This map shows details of the Aleutian arc not visible in an earlier publication. The Aleutian arc extends about 3,000 km from the Gulf of Alaska to the Kamchatka Peninsula. It marks the region where the Pacific plate subducts into the mantle beneath the North America plate. This subduction is...
A probabilistic assessment methodology for the evaluation of geologic carbon dioxide storage
Sean T. Brennan, Robert A. Burruss, Matthew D. Merrill, Philip A. Freeman, Leslie F. Ruppert
2010, Open-File Report 2010-1127
In 2007, the Energy Independence and Security Act (Public Law 110-140) authorized the U.S. Geological Survey (USGS) to conduct a national assessment of potential geologic storage resources for carbon dioxide (CO2) in cooperation with the U.S. Environmental Protection Agency and the U.S. Department of Energy. The first year of that...
Consumptive use and resulting leach-field water budget of a mountain residence
David Stannard, William T. Paul, Roy Laws, Eileen P. Poeter
2010, Journal of Hydrology (388) 335-349
Consumptive use of water in a dispersed rural community has important implications for maximum housing density and its effects on sustainability of groundwater withdrawals. Recent rapid growth in Colorado, USA has stressed groundwater supplies in some areas, thereby increasing scrutiny of approximate methods developed there more than 30 years ago to...
Suspended-sediment concentration regimes in Tennessee biological reference streams
Timothy H. Diehl, William J. Wolfe
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: existing and emerging issues
Suspended-sediment-concentration (SSC) regimes of five biological reference streams in Tennessee were characterized from 15-minute SSC records spanning 1 to 4 water years (October 1 through September 30) between 2004 and 2008. These streams represent least disturbed conditions for their respective ecoregions and have exceptional biodiversity in terms of fish or...
Calibrating recruitment estimates for mourning doves from harvest age ratios
David A. Miller, David L. Otis
2010, Journal of Wildlife Management (74) 1070-1078
We examined results from the first national-scale effort to estimate mourning dove (Zenaida macroura) age ratios and developed a simple, efficient, and generalizable methodology for calibrating estimates. Our method predicted age classes of unknown-age wings based on backward projection of molt distributions from fall harvest collections to preseason banding. We...
Discriminating silt-and-clay from suspended-sand in rivers using side-looking acoustic profilers
Scott Wright, David J. Topping, Cory A. Williams
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
The ability to accurately monitor suspended-sediment flux in rivers is needed to support many types of studies, because the sediment that typically travels in suspension affects geomorphology and aquatic habitat in a variety of ways (e.g. bank and floodplain deposition, bar morphology, light penetration and primary productivity, tidal wetland deposition...
Grain-size evolution in suspended sediment and deposits from the 2004 and 2008 controlled-flood experiments in Marble and Grand Canyons, Arizona
Amy E. Draut, David J. Topping, David M. Rubin, Scott Wright, John C. Schmidt
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
Since the closure of Glen Canyon Dam in 1963, the hydrology, sediment supply, and distribution and size of modern alluvial deposits in the Colorado River through Grand Canyon have changed substantially (e.g., Howard and Dolan, 1981; Johnson and Carothers, 1987; Webb et al., 1999; Rubin et al., 2002; Topping et...
20,000 grain-size observations from the bed of the Colorado River, and implications for sediment transport through Grand Canyon
David M. Rubin, David J. Topping, Henry Chezar, Joseph E. Hazel Jr., John C. Schmidt, Michael J. Breedlove, Theodore S. Melis, Paul E. Grams
2010, Conference Paper
In the late 1990s, we developed digital imaging hardware and software for in-situ mapping of sand-sized bed sediment of the Colorado River in Grand Canyon. This new technology enables collection and processing of hundreds of grain-size samples in a day. Bed grain size was mapped using this equipment on 8...
Evolving fluvial response of the Sandy River, Oregon, following removal of Marmot Dam
Jon J. Major, Jim O’Connor, Charles J. Podolak, Mackenzie K. Keith, Kurt R. Spicer, J. Rose Wallick, Heather M. Bragg, Smokey Pittman, Peter R. Wilcock, Abagail Rhode, Gordon E. Grant
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
The October 2007 removal of Marmot Dam on the Sandy River, Oregon, triggered a rapid sequence of fluvial responses as ~730,000 m3 of sand and gravel that filled the former reservoir were suddenly exposed to an energetic river. Using direct measurements of sediment transport, photogrammetry, and repeat surveys between transport...
Changes in prevalence of avian malaria on the Alakai`i Plateau, Kaua`i. Hawai`i
Carter T. Atkinson, Ruth B. Utzurrum
2010, Technical Report HCSU-017
We determined prevalence of malarial infections in samples of native and non-native forest birds that were sampled at three locations on the Alaka`i Plateau between 1994-1997 and again between 2007-2009. The three sites spanned the elevational range of the plateau and were located at Kawaikōī Stream (1100 m), the upper...
New York-Alabama lineament: A buried right-slip fault bordering the Appalachians and mid-continent North America
M.G. Steltenpohl, I. Zietz, J. Wright Horton, Jr., D. L. Daniels
2010, Geology (38) 571-574
The New York-Alabama (NY-AL) lineament, recognized in 1978, is a magnetic anomaly that delineates a fundamental though historically enigmatic crustal boundary in eastern North America that is deeply buried beneath the Appalachian basin. Data not in the original aeromagnetic data set, particularly the lack of any information available at the time...
Petroleum systems and geologic assessment of oil and gas in the Bighorn Basin Province, Wyoming and Montana
U.S. Geological Survey Bighorn Basin Province Assessment Team
2010, Data Series 69-V
The U.S. Geological Survey (USGS) recently completed an assessment of the undiscovered oil and gas potential of the Bighorn Basin Province, which encompasses about 6.7 million acres in north-central Wyoming and southern Montana. The assessment is based on the geologic elements of each total petroleum system defined in the province,...
Evaluation of Water Year 2011 Glen Canyon Dam Flow Release Scenarios on Downstream Sand Storage along the Colorado River in Arizona
Scott Wright, Paul E. Grams
2010, Open-File Report 2010-1133
This report describes numerical modeling simulations of sand transport and sand budgets for reaches of the Colorado River below Glen Canyon Dam. Two hypothetical Water Year 2011 annual release volumes were each evaluated with six hypothetical operational scenarios. The six operational scenarios include the current operation, scenarios with modifications to...
Arsenic: a detective story in dusts
Suzette A. Morman
2010, Earth (55) 40-47
No abstract available. ...
