Sediment-transport during three controlled-flood experiments on the Colorado River downstream from Glen Canyon Dam, with implications for eddy-sandbar deposition in Grand Canyon National Park
David J. Topping, David M. Rubin, Paul E. Grams, Ronald E. Griffiths, Thomas A. Sabol, Nicholas Voichick, Robert B. Tusso, Karen M. Vanaman, Richard R. McDonald
2010, Open-File Report 2010-1128
Three large-scale field experiments were conducted on the Colorado River downstream from Glen Canyon Dam in 1996, 2004, and 2008 to evaluate whether artificial (that is, controlled) floods released from the dam could be used in conjunction with the sand supplied by downstream tributaries to rebuild and sustainably maintain eddy...
Submarine groundwater discharge and fate along the coast of Kaloko-Honokohau National Historical Park, Island of Hawai`i: Part 3, spatial and temporal patterns in nearshore waters and coastal groundwater plumes, December 2003-April 2006
Eric E. Grossman, Joshua B. Logan, M. Katherine Presto, Curt D. Storlazzi
2010, Scientific Investigations Report 2010-5081
During seven surveys between December 2003 and April 2006, 1,045 depth profiles of surface water temperature and salinity were collected to examine variability in water column properties and the influence of submarine groundwater discharge (SGD) on the nearshore waters and coral reef complex of Kaloko-Honokōhau National Historical Park, Island of...
U.S. Geological Survey Streamgage Operation and Maintenance Cost Evaluation...from the National Streamflow Information Program
J. Michael Norris
2010, Fact Sheet 2010-3025
To help meet the goal of providing earth-science information to the Nation, the U.S. Geological Survey (USGS) operates and maintains the largest streamgage network in the world, with over 7,600 active streamgages in 2010. This network is operated in cooperation with over 850 Federal, tribal, State, and local funding partners....
Detailed Sections from Auger Holes in the Emporia 1:100,000-Scale Quadrangle, North Carolina and Virginia
Robert E. Weems, J. Stephen Schindler, William C. Lewis
2010, Open-File Report 2010-1121
The Emporia 1:100,000-scale quadrangle straddles the Tidewater Fall Line in southern Virginia and includes a small part of northernmost North Carolina. Sediments of the coastal plain underlie the eastern three-fifths of this area. These sediments onlap crystalline basement rocks toward the west and dip gently to the east, reaching a...
Occurrence of herbicides and pharmaceutical and personal care products in surface water and groundwater around Liberty Bay, Puget Sound, Washington
Jennifer A. Dougherty, Peter W. Swarzenski, Richard S. Dinicola, Martin Reinhard
2010, Journal of Environmental Quality (39) 1173-1180
Organic contaminants, such as pharmaceuticals and personal care products (PPCPs), pose a risk to water quality and the health of ecosystems. This study was designed to determine if a coastal community lacking point sources, such as waste water treatment plant effluent, could release PPCPs, herbicides, and plasticizers at detectable levels...
Effects of climate change on saltwater intrusion at Hilton Head Island, SC. U.S.A.
Dorothy F. Payne
2010, Conference Paper, Proceedings of the 21st Salt Water Intrusion Meeting, Azores, Portugal, 2010
Sea‐level rise and changes in precipitation patterns may contribute to the occurrence and affect the rate of saltwater contamination in the Hilton Head Island, South Carolina area. To address the effects of climate change on saltwater intrusion, a threedimensional, finite‐element, variable‐density, solute‐transport model was developed to simulate different rates of...
Visible and near-infrared multispectral analysis of geochemically measured rock fragments at the Opportunity landing site in Meridiani Planum
Catherine M. Weitz, William H. Farrand, Jeffrey R. Johnson, Iris Fleischer, Christian Schroder, Aileen Yingst, Bradley L. Jolliff, Ralf Gellert, Jim Bell, Kenneth E. Herkenhoff, G. Klingelhoefer, Barbara Cohen, Wendy M. Calvin, Malcolm Rutherford, James W. Ashley
2010, Journal of Geophysical Research E: Planets (115)
We have used visible and near‐infrared Panoramic Camera (Pancam) spectral data acquired by the Opportunity rover to analyze 15 rock fragments at the Meridiani Planum landing site. These spectral results were then compared to geochemistry measurements made by the in situ instruments Mössbauer (MB) and Alpha Particle X‐ray Spectrometer (APXS)...
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...
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...
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...
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,...
Delineating a road-salt plume in lakebed sediments using electrical resistivity, piezometers, and seepage meters at Mirror Lake, New Hampshire, U.S.A
Laura Toran, Melanie Johnson, Jonathan E. Nyquist, Donald O. Rosenberry
2010, Geophysics (75) WA75-WA83
Electrical-resistivity surveys, seepage meter measurements, and drive-point piezometers have been used to characterize chloride-enriched groundwater in lakebed sediments of Mirror Lake, New Hampshire, U.S.A. A combination of bottom-cable and floating-cable electrical-resistivity surveys identified a conductive zone (<100ohm-<mi...
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,...
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...
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...
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...
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...
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...
Groundwater Levels for Selected Wells in the Chehalis River Basin, Washington
E.T. Fasser, R. J. Julich
2010, Data Series 512
Groundwater levels for selected wells in the Chehalis River basin, Washington, are presented on an interactive web-based map to document the spatial distribution of groundwater levels in the study area during late summer 2009. Groundwater level data and well information were collected by the U.S. Geological Survey using standard techniques....
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...
Geochemical Results of Lysimeter Sampling at the Manning Canyon Repository in the Mercur Mining District, Utah
John Earle, LaDonna Choate
2010, Data Series 513
This report presents chemical characteristics of transient unsaturated-zone water collected by lysimeter from the Manning Canyon repository site in Utah. Data collected by U.S. Geological Survey and U.S. Department of the Interior, Bureau of Land Management scientists under an intragovernmental order comprise the existing body of hydrochemical information on unsaturated-zone...
The role of mosses in ecosystem succession and function in Alaska’s boreal forest
Merritt R. Turetsky, Michelle Mack, Teresa N. Hollingsworth, Jennifer W. Harden
2010, Canadian Journal of Forest Research (40) 1237-1264
Shifts in moss communities may affect the resilience of boreal ecosystems to a changing climate because of the role of moss species in regulating soil climate and biogeochemical cycling. Here, we use long-term data analysis and literature synthesis to examine the role of moss in ecosystem succession, productivity, and decomposition....
Topographic Science
Sandra K. Poppenga, Gayla Evans, Dean Gesch, Jason M. Stoker, Vivian R. Queija, Bruce Worstell, Dean J. Tyler, Jeff Danielson, Norman Bliss, Susan Greenlee
2010, Fact Sheet 2010-3049
The mission of U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center Topographic Science is to establish partnerships and conduct research and applications that facilitate the development and use of integrated national and global topographic datasets. Topographic Science includes a wide range of research and applications that result...
