Conference Papers
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
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.
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Traceable Radiometry Underpinning Terrestrial- and Helio- Studies (TRUTHS)
The Traceable Radiometry Underpinning Terrestrial- and Helio- Studies (TRUTHS) mission offers a novel approach to the provision of key scientific data with unprecedented radiometric accuracy for Earth Observation (EO) and solar studies, which will also establish well-calibrated reference targets/standards to support other EO missions. This paper will present the TRUTHS mission and its objectives.
Authors
N. Fox, J. Aiken, J.J. Barnett, X. Briottet, R. Carvell, C. Frohlich, S.B. Groom, O. Hagolle, J.D. Haigh, H. H. Kieffer, J. Lean, D.B. Pollock, T. Quinn, M.C.W. Sandford, M. Schaepman, K.P. Shine, W.K. Schmutz, P.M. Teillet, K. J. Thome, M.M. Verstraete, E. Zalewski
Use of Acoustic Doppler Instruments for Measuring Discharge in Streams with Appreciable Sediment Transport
The use of Acoustic Doppler current profilers (ADCP) for measuring discharge in streams with sediment transport was discussed. The studies show that the acoustic frequency of an ADCP in combination with the sediment transport characteristics in a river causes the ADCP bottom-tracking algorithms to detect a moving bottom. A moving bottom causes bottom-tracking-referenced water velocities and discha
Authors
D. S. Mueller
Use of an Acoustic Doppler Current Profiler (ADCP) to Measure Hypersaline Bidirectional Discharge
The U.S. Geological Survey measures the exchange of flow between the north and south parts of Great Salt Lake, Utah, as part of a monitoring program. Turbidity and bidirectional flow through the breach in the causeway that divides the lake into two parts makes it difficult to measure discharge with conventional streamflow techniques. An acoustic Doppler current profiler (ADCP) can be used to more
Authors
K. K. Johnson, B.L. Loving
Use of an extensive radio receiver network to document Pacific lamprey (Lampetra tridentata) entrance efficiency at fishways in the Lower Columbia River, USA
We used an extensive network of more than 170 radio receiving stations to document fine-scale passage efficiency of adult anadromous Pacific lamprey at Bonneville and The Dalles Dams in the lower Columbia River in the northwestern U.S.A. Each spring from 1997 to 2000, we released 197-299 lamprey with surgically implanted radio transmitters. Unique transmitter codes and the date and time of recepti
Authors
M.L. Moser, A.L. Matter, L.C. Stuehrenberg, T.C. Bjornn
Use of sediment quality guidelines and related tools for the asssessment of contaminated sediments: Executive summary sooklet of a SETAC Pellston Workshop
This publication summarizes the results of a Pellston Workshop sponsored by the Society of Environmental Toxicology and Chemistry (SETAC), held 17-22 August 2002 in Fairmont, Montana, USA. The full technical proceedings of the workshop will be published separately by SET AC in 2003. Previous SETAC workshops have focused on sediment ecological risk assessment (ERA) (Dickson et al. 1987; Ingersoll e
Using tsunami deposits to improve assessment of tsunami risk
In many places in the world the written record of tsunamis is too short to accurately assess the risk of tsunamis. Sedimentary deposits left by tsunamis can be used to extend the record of tsunamis to improve risk assessment. The two primary factors in tsunami risk, tsunami frequency and magnitude, can be addressed through field and modeling studies of tsunami deposits. Recent advances in identifi
Authors
B. E. Jaffe, G. Gelfenbaum
Variability of suspended-sediment concentration at tidal to annual time scales in San Francisco Bay, USA
Singular spectrum analysis for time series with missing data (SSAM) was used to reconstruct components of a 6-yr time series of suspended-sediment concentration (SSC) from San Francisco Bay. Data were collected every 15 min and the time series contained missing values that primarily were due to sensor fouling. SSAM was applied in a sequential manner to calculate reconstructed components with time
Authors
D. H. Schoellhamer
Velocity and Sediment Concentration Measurements over Bedforms in Sand-Bed Rivers
Bedforms often are present on the bed of alluvial sand-bed rivers. Bedforms, such as dunes, impact the flow field. In this field study, velocity and suspended-sediment concentration measurements were made longitudinally along a dune field in large (5-15 meters deep) alluvial sand-bed rivers. The velocity and suspended-sediment concentration data was collected using an acoustic Doppler current prof
Authors
Robert R. Holmes, M.H. Garcia
X-ray Computed Tomography Observation of Methane Hydrate Dissociation
Deposits of naturally occurring methane hydrate have been identified in permafrost and deep oceanic environments with global reserves estimated to be twice the total amount of energy stored in fossil fuels. The fundamental behavior of methane hydrate in natural formations, while poorly understood, is of critical importance if the economic recovery of methane from hydrates is to be accomplished. In
Authors
L. Tomutsa, B. Freifeld, T.J. Kneafsey, L.A. Stern
Age constraints on fluid inclusions in calcite at Yucca Mountain
No abstract available.
Authors
Leonid A. Neymark, Yuri V. Amelin, James B. Paces, Zell E. Peterman, Joseph F. Whelan
Changes in density and height of the shrub baccharis halimifolia following burning in coastal tallgrass prairie
No abstract available.
Authors
Larry K. Allain, James B. Grace
Evidence for Mississippi Valley-type lead-zinc mineralization in the Cevennes region, Southern France, during Pyrenees orogeny
No abstract available.
Authors
D. Leach, Wayne R. Premo, M. Lewchuk, H. Rouvier, J.-C. Macquar, J. Thibieroz, B. Henry, M. Le Goff