Spirit Mars Rover Mission: Overview and selected results from the northern Home Plate Winter Haven to the side of Scamander crater
R. E. Arvidson, J.F. Bell III, P. Bellutta, N.A. Cabrol, J.G. Catalano, J. Cohen, L.S. Crumpler, D. J. Des Marais, T.A. Estlin, W.H. Farrand, R. Gellert, J. A. Grant, Rebecca N Greenberger, E.A. Guinness, Kenneth E. Herkenhoff, J.A. Herman, K.D. Iagnemma, J. R. Johnson, G. Klingelhoefer, K.A. Lichtenberg, S.A. Maxwell, D. W. Ming, R.V. Morris, M.S. Rice, S. W. Ruff, A. Shaw, Kirsten L. Siebach, Paulo A. de Souza Jr., A.W. Stroupe, S. W. Squyres, R.J. Sullivan, K.P. Talley, J.A. Townsend, A. Wang, J.R. Wright, A. S. Yen
2010, Journal of Geophysical Research E: Planets (115)
This paper summarizes Spirit Rover operations in the Columbia Hills, Gusev crater, from sol 1410 (start of the third winter campaign) to sol 2169 (when extrication attempts from Troy stopped to winterize the vehicle) and provides an overview of key scientific results. The third winter campaign took advantage of parking...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
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,...
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...
Sediment management strategies associated with dam removal in the State of Washington
C. S. Magirl, P.J. Connolly, B. Coffin, J.J. Duda, A.E. Draut
2010, Conference Paper, Proceedings of the 2nd Joint Federal Interagency Conference (9th Federal Interagency Sedimentation Conference and 4th Federal Interagency Hydrologic Modeling Conference)
Different removal strategies are described for dams in three diverse drainage basins (Wind River, White Salmon River, and Elwha River basins) in the State of Washington (USA). The comparisons between the strategies offer the opportunity to track the effects of sediment resulting from dam decommissioning in the Pacific Northwest and...
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...
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...
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...
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...
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...
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....
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...
