Conference Papers
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Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Multi-offset GPR methods for hyporheic zone investigations Multi-offset GPR methods for hyporheic zone investigations
Porosity of stream sediments has a direct effect on hyporheic exchange patterns and rates. Improved estimates of porosity heterogeneity will yield enhanced simulation of hyporheic exchange processes. Ground-penetrating radar (GPR) velocity measurements are strongly controlled by water content thus accurate measures of GPR velocity in saturated sediments provides estimates of porosity...
Authors
T.R. Brosten, J.H. Bradford, J. P. McNamara, M.N. Gooseff, J.P. Zarnetske, W.B. Bowden, M.E. Johnston
Near‐surface evaluation of Ball Mountain Dam, Vermont, using multi‐channel analysis of surface waves (MASW) and refraction tomography seismic methods on land‐streamer data Near‐surface evaluation of Ball Mountain Dam, Vermont, using multi‐channel analysis of surface waves (MASW) and refraction tomography seismic methods on land‐streamer data
A limited seismic investigation of Ball Mountain Dam, an earthen dam near Jamaica, Vermont, was conducted using multiple seismic methods including multi‐channel analysis of surface waves (MASW), refraction tomography, and vertical seismic profiling (VSP). The refraction and MASW data were efficiently collected in one survey using a towed land streamer containing vertical‐displacement...
Authors
Julian M. Ivanov, Carole D. Johnson, John W. Lane, Richard D. Miller, Drew Clemens
Neogene collision and deformation of convergent margins along the backbone of the Americas Neogene collision and deformation of convergent margins along the backbone of the Americas
Along Pacific convergent margins of the Americas, high-standing relief on the subducting oceanic plate "collides" with continental slopes and subducts. Features common to many collisions are uplift of the continental margin, accelerated seafloor erosion, accelerated basal subduction erosion, a flat slab, and a lack of active volcanism. Each collision along America's margins has...
Authors
Roland E. von Huene, C.R. Ranero
Numerical analysis of the performance of rock weirs: Effects of structure configuration on local hydraulics Numerical analysis of the performance of rock weirs: Effects of structure configuration on local hydraulics
River spanning rock structures are being constructed for water delivery as well as to enable fish passage at barriers and provide or improve the aquatic habitat for endangered fish species. Current design methods are based upon anecdotal information applicable to a narrow range of channel conditions. The complex flow patterns and performance of rock weirs is not well understood. Without...
Authors
C. L. Holmquist-Johnson
Numerical study of tsunami generated by multiple submarine slope failures in Resurrection Bay, Alaska, during the MW 9.2 1964 earthquake Numerical study of tsunami generated by multiple submarine slope failures in Resurrection Bay, Alaska, during the MW 9.2 1964 earthquake
We use a viscous slide model of Jiang and LeBlond (1994) coupled with nonlinear shallow water equations to study tsunami waves in Resurrection Bay, in south-central Alaska. The town of Seward, located at the head of Resurrection Bay, was hit hard by both tectonic and local landslide-generated tsunami waves during the MW 9.2 1964 earthquake with an epicenter located about 150 km northeast...
Authors
E. Suleimani, R. Hansen, Peter J. Haeussler
Partners in Flight research needs assessment summary Partners in Flight research needs assessment summary
An important component of the PIF International Conference in McAllen, TX in February 2008 was the incorporation of a Needs Assessment Process in all of the conference sessions. Throughout the McAllen sessions, a number of critical information gaps were identified, pointing to future research that will be needed to establish bird conservation objectives and accomplish bird conservation...
Authors
Janet M. Ruth, Kenneth V. Rosenberg
Phenology as a tool to link ecology and sustainable decision making in a dynamic environment Phenology as a tool to link ecology and sustainable decision making in a dynamic environment
[No abstract available]
Authors
A. J. Miller-Rushing, J. Weltzin
Physical modeling of river spanning rock structures: Evaluating interstitial flow, local hydraulics, downstream scour development, and structure stability Physical modeling of river spanning rock structures: Evaluating interstitial flow, local hydraulics, downstream scour development, and structure stability
Rock weir and ramp structures uniquely serve a necessary role in river management: to meet water deliveries in an ecologically sound manner. Uses include functioning as low head diversion dams, permitting fish passage, creating habitat diversity, and stabilizing stream banks and profiles. Existing information on design and performance of in-stream rock structures does not provide the...
Authors
K.L. Collins, C.I. Thornton, B. Mefford, C. L. Holmquist-Johnson
Preliminary results of the North American Soil Geochemical Landscapes Project, northeast United States and Maritime Provinces of Canada Preliminary results of the North American Soil Geochemical Landscapes Project, northeast United States and Maritime Provinces of Canada
The results of a soil geochemical survey of the Canadian Maritime provinces and the northeast states of the United States are described. The data presented are for the
Authors
Eric C. Grunsky, David B. Smith, Peter W.B. Friske, Laurel G. Woodruff
Preparing a population for an earthquake like Chi-Chi: The Great Southern California ShakeOut Preparing a population for an earthquake like Chi-Chi: The Great Southern California ShakeOut
The Great Southern California ShakeOut was a week of special events featuring the largest earthquake drill in United States history. On November 13, 2008, over 5 million southern Californians pretended that a magnitude-7.8 earthquake had occurred and practiced actions that could reduce its impact on their lives. The primary message of the ShakeOut is that what we do now, before a big...
Authors
Lucile M. Jones
Primary factors affecting water quality and quantity in four watersheds in Eastern Puerto Rico Primary factors affecting water quality and quantity in four watersheds in Eastern Puerto Rico
As part of the U.S. Geological Survey (USGS) Water, Energy, and Biogeochemical Budgets (WEBB) program, four small watersheds in eastern Puerto Rico were monitored to identify and evaluate the effects of geology, landcover, atmospheric deposition, and other factors on stream water quality and quantity. Two catchments are located on coarse-grained granitic plutonic rocks, which weather to...
Authors
Sheila F. Murphy, Robert F. Stallard
Producing fired bricks using coal slag from a gasification plant in indiana Producing fired bricks using coal slag from a gasification plant in indiana
Integrated gasification combined cycle (IGCC) is a promising power generation technology which increases the efficiency of coal-to-power conversion and enhances carbon dioxide concentration in exhaust emissions for better greenhouse gas capture. Two major byproducts from IGCC plants are bottom slag and sulfur. The sulfur can be processed into commercially viable products, but high value
Authors
L.-M. Chen, I.-M. Chou, Sheng-Fu J. Chou, J.W. Stucki