Conference Papers
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5326
Measuring CO2 emissions from coal fires in the U.S.
No abstract available.
Authors
Allan Kolker, Mark A. Engle, J.C. Hower, J.M.K. O'Keefe, L.F. Radke, E.L. Heffern, A. ter-Schure, G.B. Stracher, A. Prakash, Yomayra A. Roman-Colon, Ricardo A. Olea
Measuring discharge with ADCPs: Inferences from synthetic velocity profiles
Synthetic velocity profiles are used to determine guidelines for sampling discharge with acoustic Doppler current profilers (ADCPs). The analysis allows the effects of instrument characteristics, sampling parameters, and properties of the flow to be studied systematically. For mid-section measurements, the averaging time required for a single profile measurement always exceeded the 40 s usually re
Authors
C.R. Rehmann, D. S. Mueller, K. A. Oberg
Monitoring urban land cover change by updating the national land cover database impervious surface products
The U.S. Geological Survey (USGS) National Land Cover Database (NLCD) 2001 is widely used as a baseline for national land cover and impervious conditions. To ensure timely and relevant data, it is important to update this base to a more recent time period. A prototype method was developed to update the land cover and impervious surface by individual Landsat path and row. This method updates NLCD 2
Authors
George Z. Xian, Collin G. Homer
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 beneath strea
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
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 geophones and
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
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 exceptions to a sin
Authors
Roland E. von Huene, C.R. Ranero
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 accurate u
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
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 of Seward
Authors
E. Suleimani, R. Hansen, Peter J. Haeussler
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 goals. This
Authors
Janet M. Ruth, Kenneth V. Rosenberg
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
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 guidance nece
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
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