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...
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...
Identification, characterization and genetic mapping of TLR1 loci in rainbow trout (Oncorhynchus mykiss)
Yniv Palti, M. Fernanda Rodriguez, Scott A. Gahr, Maureen K. Purcell, Caird E. Rexroad III, Gregory D. Wiens
2010, Fish and Shellfish Immunology (28) 918-926
Induction of innate immune pathways is critical for early anti-microbial defense but there is limited understanding of how teleosts recognize microbial molecules and activate these pathways. In mammals, Toll-like receptors (TLR) 1 and 2 form a heterodimer involved in recognizing peptidoglycans and lipoproteins of microbial origin. Herein, we identify and...
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...
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...
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...
The use of the multi-dimensional surface-water modeling system (MD-SWMS) in calculating discharge and sediment transport in remote ephemeral streams
Peter G. Griffiths, David J. Topping, Richard R. McDonald, Thomas A. Sabol
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
No abstract available....
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...
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...
Modeling the Effects of Mortality on Sea Otter Populations
James L. Bodkin, Brenda E. Ballachey
2010, Scientific Investigations Report 2010-5096
Conservation and management of sea otters can benefit from managing the magnitude and sex composition of human related mortality, including harvesting within sustainable levels. Using age and sex-specific reproduction and survival rates from field studies, we created matrix population models representing sea otter populations with growth rates of 1.005, 1.072,...
Arsenic: a detective story in dusts
Suzette A. Morman
2010, Earth (55) 40-47
No abstract available. ...
Karst map of Puerto Rico
2010, Open-File Report 2010-1104
This map is a digital compilation, combining the mapping of earlier geologists. Their work, cited on the map, contains more detailed descriptions of karst areas and landforms in Puerto Rico. This map is the basis for the Puerto Rico part of a new national karst map currently being compiled by...
Geospatial Information Response Team
Emitt C. Witt III
2010, Fact Sheet 2010-3039
Extreme emergency events of national significance that include manmade and natural disasters seem to have become more frequent during the past two decades. The Nation is becoming more resilient to these emergencies through better preparedness, reduced duplication, and establishing better communications so every response and recovery effort saves lives and...
Upper thermal tolerances of early life stages of freshwater mussels
Tamara J. Pandolfo, W. Gregory Cope, Consuelo Arellano, Robert B. Bringolf, M. Christopher Barnhart, E Hammer
2010, Journal of the North American Benthological Society (29) 959-969
Freshwater mussels (order Unioniformes) fulfill an essential role in benthic aquatic communities, but also are among the most sensitive and rapidly declining faunal groups in North America. Rising water temperatures, caused by global climate change, industrial discharges, drought, or land development, could further challenge imperiled unionid communities. The aim of...
The effects of road crossings on prairie stream habitat and function
Wesley W. Bouska, Timothy Keane, Craig P. Paukert
2010, Journal of Freshwater Ecology (25) 499-506
Improperly designed stream crossing structures may alter the form and function of stream ecosystems and habitat and prohibit the movement of aquatic organisms. Stream sections adjoining five concrete box culverts, five low-water crossings (concrete slabs vented by one or multiple culverts), and two large, single corrugated culvert vehicle crossings in...
Nitrate Loads and Concentrations in Surface-Water Base Flow and Shallow Groundwater for Selected Basins in the United States, Water Years 1990-2006
Norman E. Spahr, Neil M. Dubrovsky, JoAnn M. Gronberg, O. Lehn Franke, David M. Wolock
2010, Scientific Investigations Report 2010-5098
Hydrograph separation was used to determine the base-flow component of streamflow for 148 sites sampled as part of the National Water-Quality Assessment program. Sites in the Southwest and the Northwest tend to have base-flow index values greater than 0.5. Sites in the Midwest and the eastern portion of the Southern...
A preliminary evaluation of Trinity river sediment and nutrient loads into Galveston Bay, Texas, during two periods of high flow
Michael T. Lee
2010, Conference Paper
Suspend-sediment and water-quality data were measured during two periods of high flow, one during April 20-23, 2009 and a second during September 22-November 3, 2009. On the basis of streamflow and continuous and discrete water-quality measurements, the two periods of high flow had different flood and nutrient loading characteristics. Some...
Analyzing turbidity, suspended-sediment concentration, and particle-size distribution resulting from a debris flow on Mount Jefferson, Oregon, November 2006
Mark A. Uhrich
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
A debris flow and sediment torrent occurred on the flanks of Mt Jefferson in Oregon on November 6, 2006, inundating 150 acres of forest. The massive debris flow was triggered by a rock and snow avalanche from the Milk Creek glaciers and snowfields during the early onset of an intense...
An automated and universal method for measuring mean grain size from a digital image of sediment
Daniel D. Buscombe, David M. Rubin, Jonathan A. Warrick
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010 : Hydrology and sedimentation for a changing future : existing and emerging issues
Existing methods for estimating mean grain size of sediment in an image require either complicated sequences of image processing (filtering, edge detection, segmentation, etc.) or statistical procedures involving calibration. We present a new approach which uses Fourier methods to calculate grain size directly from the image without requiring calibration. Based...
Evaluating the effect of Tikhonov regularization schemes on predictions in a variable-density groundwater model
Jeremy T. White, Christian D. Langevin, Joseph D. Hughes
2010, Conference Paper, SWIM21 – 21st Salt Water Intrusion Meeting Proceedings Book
Calibration of highly‐parameterized numerical models typically requires explicit Tikhonovtype regularization to stabilize the inversion process. This regularization can take the form of a preferred parameter values scheme or preferred relations between parameters, such as the preferred equality scheme. The resulting parameter distributions calibrate the model to a user‐defined acceptable level...
Use of time series and harmonic constituents of tidal propagation to enhance estimation of coastal aquifer heterogeneity
Joseph D. Hughes, Jeremy T. White, Christian D. Langevin
2010, Conference Paper, SWIM21 – 21st Salt Water Intrusion Meeting Proceedings Book
A synthetic two‐dimensional model of a horizontally and vertically heterogeneous confined coastal aquifer system, based on the Upper Floridan aquifer in south Florida, USA, subjected to constant recharge and a complex tidal signal was used to generate 15‐minute water‐level data at select locations over a 7‐day simulation period. “Observed” water‐level...
Visualizing NetCDF Files by Using the EverVIEW Data Viewer
Craig Conzelmann, Stephanie S. Romañach
2010, Fact Sheet 2010-3046
Over the past few years, modelers in South Florida have started using Network Common Data Form (NetCDF) as the standard data container format for storing hydrologic and ecologic modeling inputs and outputs. With its origins in the meteorological discipline, NetCDF was created by the Unidata Program Center at the University...
