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Page 1849, results 46201 - 46225

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Analysis of current-use pesticides in aquatic and terrestrial organisms collected throughout California, USA
Kelly L. Smalling, Kathyrn M. Kuivila
2010, Conference Paper, Proceedings of 14th international conference, IWA Diffuse Pollution Specialist Group: Diffuse pollution and eutrophication
A wide variety of pesticides are applied concurrently in agricultural and urban areas and transported off site dissolved in water and bound to sediments. But the exposure of aquatic and terrestrial organisms to current-use pesticides and the resulting effects are not well understood. One approach is to directly analyze tissue...
Seasonal and decadal-scale channel evolution on the dammed Elwha River, Washington
Amy E. Draut, Joshua B. Logan, Mark C. Mastin, Randall E. McCoy
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues
More than 75,000 dams exist in the continental United States to provide water storage, flood control, and hydropower generation (Graf, 1999). Many of these were built during the early twentieth century and are due for relicensing consideration now and in the near future. The cost of repairing aging dams, together...
Surrogate technologies for monitoring suspended-sediment transport in rivers
John R. Gray, Jeffrey W. Gartner, Chauncey W. Anderson, Gregory G. Fisk, G. Douglas Glysson, Daniel J. Gooding, Nancy J. Hornewer, Matthew C. Larsen, Jamie P. Macy, Patrick P. Rasmussen, Scott A. Wriight, Andrew C. Ziegler
Cristiano Poleto, Susanne Charlesworth, editor(s)
2010, Book chapter, Sedimentology of Aqueous Systems
No abstract available....
The use of genetics for the management of a recovering population: temporal assessment of migratory peregrine falcons in North America
Jeff A. Johnson, Sandra L. Talbot, George K. Sage, Kurt K. Burnham, Joseph W. Brown, Tom L. Maechtle, William S. Seegar, Michael A. Yates, Bud Anderson, David P. Mindell
2010, PLoS ONE (5)
Background:Our ability to monitor populations or species that were once threatened or endangered and in the process of recovery is enhanced by using genetic methods to assess overall population stability and size over time. This can be accomplished most directly by obtaining genetic measures from temporally-spaced samples that reflect...
Overview of selected surrogate technologies for high-temporal resolution suspended-sediment monitoring
John R. Gray, Jeffrey W. Gartner
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and Sedimentation for a Changing Future: Existing and Emerging Issues: Las Vegas, NV, June 27-July 1, 2010
Traditional methods for characterizing selected properties of suspended sediments in rivers are being augmented and in some cases replaced by cost-effective surrogate instruments and methods that produce a temporally dense time series of quantifiably accurate data for use primarily in sediment-flux computations. Turbidity is the most common such surrogate...
Fluvial sediment in the environment: a national challenge
Matthew C. Larsen, Allen C. Gellis, G. Douglas Glysson, John R. Gray, Arthur J. Horowitz
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and Sedimentation for a Changing Future: Existing and Emerging Issues
Sediment and sediment-associated constituents can contribute substantially to water-quality impairment. In the past, sediment was viewed mainly as an engineering problem that affected reservoir storage capacity, shipping channel maintenance, and bridge scour, as well as the loss of agricultural soil. Sediment is now recognized as a major cause of aquatic...
Development of a national, dynamic reservoir-sedimentation database
J. R. Gray, J.M. Bernard, D. W. Stewart, E.J. McFaul, K.W. Laurent, G. E. Schwarz, J.T. Stinson, M.M. Jonas, T. J. Randle, J.W. Webb
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and Sedimentation for a Changing Future: Existing and Emerging Issues: Las Vegas, NV, June 27-July 1, 2010
The importance of dependable, long-term water supplies, coupled with the need to quantify rates of capacity loss of the Nation’s re servoirs due to sediment deposition, were the most compelling reasons for developing the REServoir- SEDimentation survey information (RESSED) database and website. Created under the auspices of the Advisory Committee...
Computing time-series suspended-sediment concentrations and loads from in-stream turbidity-sensor and streamflow data
Patrick P. Rasmussen, John R. Gray, G. Doug Glysson, Andrew C. Ziegler
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and Sedimentation for a Changing Future: Existing and Emerging Issues: Las Vegas, NV, June 27-July 1, 2010
Over the last decade, use of a method for computing suspended-sediment concentration and loads using turbidity sensors—primarily nephelometry, but also optical backscatter—has proliferated. Because an in- itu turbidity sensor is capa le of measuring turbidity instantaneously, a turbidity time series can be recorded and related directly to time-varying suspended-sediment concentrations....
The morphology, processes, and evolution of Monterey Fan: a revisit
James V. Gardner, Robert G. Bohannon, Michael E. Field, Douglas G. Masson
2010, Book chapter, Geology of the United States' seafloor: the view from GLORIA
Long-range (GLORIA) and mid-range (TOBI) sidescan imagery and seismic-reflection profiles have revealed the surface morphology and architecture of the complete Monterey Fan. The fan has not developed a classic wedge shape because it has been blocked for much of its history by Morro Fracture Zone. The barrier has caused the...
HIMALA: climate impacts on glaciers, snow, and hydrology in the Himalayan region
Molly Elizabeth Brown, Hua Ouyang, Shahid Habib, Basanta Shrestha, Mandira Shrestha, Prajjwal Panday, Maria Tzortziou, Frederick Policelli, Guleid A. Artan, Amarnath Giriraj, Sagar R. Bajracharya, Adina Racoviteanu
2010, Mountain Research and Development (30) 401-404
Glaciers are the largest reservoir of freshwater on Earth, supporting one third of the world's population. The Himalaya possess one of the largest resources of snow and ice, which act as a freshwater reservoir for more than 1.3 billion people. This article describes a new project called HIMALA, which focuses...
A model for Iapetan rifting of Laurentia based on Neoproterozoic dikes and related rocks
William C. Burton, Scott Southworth
2010, GSA Memoirs (206) 455-476
Geologic evidence of the Neoproterozoic rifting of Laurentia during breakup of Rodinia is recorded in basement massifs of the cratonic margin by dike swarms, volcanic and plutonic rocks, and rift-related clastic sedimentary sequences. The spatial and temporal distribution of these geologic features varies both within and between the massifs but...
Understanding behavioral responses of fish to pheromones in natural freshwater environments
Nicholas S. Johnson, Weiming Li
2010, Journal of Comparative Physiology A (196) 701-711
There is an abundance of experimental studies and reviews that describe odorant-mediated behaviors of fish in laboratory microcosms, but research in natural field conditions has received considerably less attention. Fish pheromone studies in laboratory settings can be highly productive and allow for controlled experimental designs; however, laboratory tanks and flumes...
Viscoelastic-cycle model of interseismic deformation in the northwestern United States
F. F. Pollitz, Patricia McCrory, Doug Wilson, Jerry Svarc, Christine Puskas, Robert B. Smith
2010, Geophysical Journal International (181) 665-696
We apply a viscoelastic cycle model to a compilation of GPS velocity fields in order to address the kinematics of deformation in the northwestern United States. A viscoelastic cycle model accounts for time-dependent deformation following large crustal earthquakes and is an alternative to block models for explaining the interseismic crustal...
Correction to “Constraints on the stress state of the San Andreas Fault with analysis based on core and cuttings from San Andreas Fault Observatory at Depth (SAFOD) drilling phases 1 and 2”
Sheryl Tembe, David Lockner, Teng-Fong Wong
2010, Journal of Geophysical Research B: Solid Earth (115)
This article corrects: Constraints on the stress state of the San Andreas Fault with analysis based on core and cuttings from San Andreas Fault Observatory at Depth (SAFOD) drilling phases 1 and 2. Vol. 114, Issue B11, Article first published online: 5 NOV 2009....
Analytical models for the groundwater tidal prism and associated benthic water flux
Jeffrey N. King, Ashish J. Mehta, Robert G. Dean
2010, Hydrogeology Journal (18) 203-215
The groundwater tidal prism is defined as the volume of water that inundates a porous medium, forced by one tidal oscillation in surface water. The pressure gradient that generates the prism acts on the subterranean estuary. Analytical models for the groundwater tidal prism and associated benthic flux are presented. The...
Creation of next generation U.S. Geological Survey topographic maps
Kari J. Craun
2010, Book
The U.S. Geological Survey (USGS) is 2 years into a 3-year cycle to create new digital topographic map products for the conterminous United States from data acquired and maintained as part of The National Map databases. These products are in the traditional, USGS topographic quadrangle, 7.5-minute (latitude and longitude) cell...
Making lidar more photogenic: creating band combinations from lidar information
Jason M. Stoker
2010, Photogrammetric Engineering and Remote Sensing (76) 216-220
Over the past five to ten years the use and applicability of light detection and ranging (lidar) technology has increased dramatically. As a result, an almost exponential amount of lidar data is being collected across the country for a wide range of applications, and it is currently the technology of...
Petrography, mineralogy, and geochemistry of deep gravelly sands in the Eyreville B core, Chesapeake Bay impact structure
Katerina Bartosova, Susanne Gier, J. Wright Horton Jr., Christian Koeberl, Dieter Mader, Henning Dypvik
2010, Meteoritics and Planetary Science (45) 1021-1052
The ICDP–USGS Eyreville drill cores in the Chesapeake Bay impact structure reached a total depth of 1766 m and comprise (from the bottom upwards) basement-derived schists and granites/pegmatites, impact breccias, mostly poorly lithified gravelly sand and crystalline blocks, a granitic slab, sedimentary breccias, and postimpact sediments. The gravelly sand and...
Emerging themes in the ecology and management of North American forests
Terry L. Sharik, William Adair, Fred A. Baker, Michael Battaglia, Emily J. Comfort, Anthony W. D’Amato, Craig Delong, R. Justin DeRose, Mark J. Ducey, Mark Harmon, Louise Levy, Jesse A. Logan, Joseph O'Brien, Brian J. Palik, Scott D. Roberts, Paul C. Rogers, Douglas J. Shinneman, Thomas Spies, Sarah L. Taylor, Christopher Woodall, Andrew Youngblood
2010, International Journal of Forestry Research (2010)
The 7th North American Forest Ecology Workshop, consisting of 149 presentations in 16 oral sessions and a poster session, reflected a broad range of topical areas currently under investigation in forest ecology and management. There was an overarching emphasis on the role of disturbance, both natural and anthropogenic, in the...
Ball clay
Robert L. Virta
2010, Mining Engineering (62) 39-40
The article reports on the global market performance of ball clay in 2009 and presents an outlook for its 2010 performance. Several companies mined ball call in the country including Old Hickey Clay Co., Kentucky-Tennessee Clay Co., and H.C. Spinks Clay Co. Information on the decline in ball clay imports...
New plant records from the Hawaiian Archipelago
Forest Starr, Kim Starr, Lloyd L. Loope
Neal L. Evenhuis, Lucius G. Eldredge, editor(s)
2010, Bishop Museum Occasional Papers: Records of the Hawaii Biological Survey for 2008 (107) 61-68
The following contributions include 19 new plant records for the islands of Kure Atoll (1), Midway Atoll (7), Lāna‘i (9), Kaho‘olawe (1), and Maui (1). The records are comprised of one new state record and 18 new island records. All but one of the records are non-natives. Images of most...