Local sediment scour model tests for the Woodrow Wilson Bridge piers
D.M. Sheppard, J.S. Jones, M. Odeh, T. Glasser
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
The Woodrow Wilson Bridge on I-495 over the Potomac River in Prince Georges County, Maryland is being replaced. Physical local scour model studies for the proposed piers for the new bridge were performed in order to help establish design scour depths. Tests were conducted in two different flumes, one in...
Application of near real-time radial semblance to locate the shallow magmatic conduit at Kilauea Volcano, Hawaii
P. Dawson, D. Whilldin, B. Chouet
2004, Geophysical Research Letters (31)
Radial Semblance is applied to broadband seismic network data to provide source locations of Very-Long-Period (VLP) seismic energy in near real time. With an efficient algorithm and adequate network coverage, accurate source locations of VLP energy are derived to quickly locate the shallow magmatic conduit system at Kilauea Volcano, Hawaii....
An acoustic velocity measurement system for aiding barge traffic in the Colorado River locks near Matagorda, Texas
J. W. East, C. Scheffler
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
In July 1999, the U.S. Geological Survey installed an acoustic Doppler velocity meter in the Colorado River, near the city of Matagorda in southeast Texas. The meter is part of an integrated system used by the U.S. Army Corps of Engineers to control barge traffic that passes through a lock...
Flood hydrology for Dry Creek, Lake County, Northwestern Montana
C. Parrett, R.D. Jarrett
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
Dry Creek drains about 22.6 square kilometers of rugged mountainous terrain upstream from Tabor Dam in the Mission Range near St. Ignatius, Montana. Because of uncertainty about plausible peak discharges and concerns regarding the ability of the Tabor Dam spillway to safely convey these discharges, the flood hydrology for Dry...
Ice processes affect habitat use and movements of adult cutthroat trout and brook trout in a Wyoming foothills stream
J.W. Lindstrom, W.A. Hubert
2004, North American Journal of Fisheries Management (24) 1341-1352
Habitat use and movements of 25 adult cutthroat trout Oncorhynchus clarkii and 25 adult brook trout Salvelinus fontinalis from fall through winter 2002-2003 were assessed by means of radiotelemetry in a 7-km reach of a Rocky Mountains foothills stream. Temporal dynamics of winter habitat conditions were evaluated by regularly measuring...
Simulation of an urban ground-water-flow system in the Menomonee Valley, Milwaukee, Wisconsin using analytic element modeling
C. P. Dunning, D. T. Feinstein
2004, Conference Paper, Bridging the Gap: Meeting the World's Water and Environmental Resources Challenges - Proceedings of the World Water and Environmental Resources Congress 2001
A single-layer, steady-state analytic element model was constructed to simulate shallow ground-water flow in the Menomonee Valley, an old industrial center southwest of downtown Milwaukee, Wisconsin. Project objectives were to develop an understanding of the shallow ground-water flow system and identify primary receptors of recharge to the valley. The analytic...
A web-enabled system for integrated assessment of watershed development
R. Dymond, V. Lohani, B. Regmi, R. Dietz
2004, Conference Paper, Bridging the Gap: Meeting the World's Water and Environmental Resources Challenges - Proceedings of the World Water and Environmental Resources Congress 2001
Researchers at Virginia Tech have put together the primary structure of a web enabled integrated modeling system that has potential to be a planning tool to help decision makers and stakeholders in making appropriate watershed management decisions. This paper describes the integrated system, including data sources, collection, analysis methods, system...
Tailrace Egress of yearling and subyearling Chinook salmon and juvenile steelhead following juvenile bypass system passage at John Day Dam, 2002
C. D. Smith, Theresa L. Liedtke, B.J. Hausmann, Jacquelyn L. Schei, J.R. Lyng, L.P. Gee, John W. Beeman
2004, Report
No abstract available....
Identifying a base network of federally funded streamgaging stations
Kernell G. Ries III, J.R. Kolva, D. W. Stewart
2004, Conference Paper, Bridging the Gap: Meeting the World's Water and Environmental Resources Challenges - Proceedings of the World Water and Environmental Resources Congress 2001
The U.S. Geological Survey (USGS) has completed a preliminary analysis to identify streamgaging stations needed in a base network that would satisfy five primary Federal goals for collecting streamflow information. The five goals are (1) determining streamflow at interstate and international borders and at locations mandated by court decrees, (2)...
Methods and guidelines for effective model calibration
M. C. Hill
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
This paper briefly describes nonlinear regression methods, a set of 14 guidelines for model calibration, how they are implemented in and supported by two public domain computer programs, and a demonstration and a test of the methods and guidelines. Copyright ASCE 2004....
Use of acoustic technology to define hydraulic characteristics of an estuary near the Mississippi Gulf Coast
K. Van Wilson Jr.
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
An Acoustic Doppler Current Profiler (ADCP) was used on the Jourdan River at Interstate Highway 10 near Kiln, Mississippi, in 1996 to measure three-dimensional velocity vectors and water depths and in 1998, in combination with a global positioning system, to define channel bathymetry in the vicinity of the bridge. During...
Historical perspectives on the concept of ecosystem degradation
W. L. Halvorson
2004, Conference Paper, International Journal of Ecology and Environmental Sciences
The concept of environmental degradation has evolved with the development of human society and settlement. In early human development, tribes went through a series of cycles of taming or developing mastery over the environment, to utilizing the resources of that environment until they could no longer support the population, which...
2,3,7,8-TCDD effects on visual structure and function in swim-up rainbow trout
Paulo S. M. Carvalho
2004, Environmental Science & Technology (38) 6300-6306
An understanding of mechanisms of contaminant effects across levels of biological organization is essential in ecotoxicology if we are to generate predictive models for population-level effects. We applied a suite of biochemical, histological, and behavioral end points related to visual structure and function and foraging behavior to evaluate effects of...
Ecosystem restoration on the California Channel Islands
W. L. Halvorson
2004, Conference Paper, International Journal of Ecology and Environmental Sciences
Restoration of natural habitat has become increasingly important over the last three decades in the United States, first as mitigation for development (especially in wetlands), and more recently in natural areas. This latter restoration has come about as land managing agencies have seen the need to reverse the impact of...
Probabilistic assessment of beach and dune changes
A. H. Sallenger Jr., H. Stockdon, J. Haines, W. Krabill, R. Swift, J. Brock
2004, Conference Paper, Coastal Engineering 2000 - Proceedings of the 27th International Conference on Coastal Engineering, ICCE 2000
The recent availability of spatially-dense airborne lidar data makes assessment of the vulnerability of beaches and dunes to storm impacts practical over long reaches of coast. As an initial test, elevations of the tops (D high) and bases (Dlow) of foredune ridges along a 55-km reach on the northern Outer...
Use of amphibians as indicators of ecosystem restoration success
Kenneth G. Rice, Frank Mazzotti
2004, Fact Sheet 2004-3106
No abstract available at this time...
Seasonal methane emissions by diffusion and ebullition from oligohaline marsh environments in coastal Louisiana
Joel S. Leventhal, Glenn R. Guntenspergen
2004, Book chapter, Geochemical investigations in Earth and Space Science: A tribute to Isaac R. Kaplan: The Geochemical Society Special Publications Vol. 9
Methane is an important atmospheric greenhouse gas that is emitted from many natural and anthropogenic sources. In order to evaluate the global methane budget, precise data are needed from the diverse sources including coastal wetlands. Over 100 time-series determinations of methane emissions from an oligohaline wetland (brackish marsh) in coastal...
A method for evaluating the importance of system state observations to model predictions, with application to the Death Valley regional groundwater flow system
Claire R. Tiedeman, D. Matthew Ely, Mary C. Hill, Grady M. O’Brien
2004, Water Resources Research (40)
We develop a new observation‐prediction (OPR) statistic for evaluating the importance of system state observations to model predictions. The OPR statistic measures the change in prediction uncertainty produced when an observation is added to or removed from an existing monitoring network, and it can be used to guide refinement and...
Standard penetration test-based probabilistic and deterministic assessment of seismic soil liquefaction potential
K.O. Cetin, R.B. Seed, A. Der Kiureghian, K. Tokimatsu, L.F. Harder Jr., R. E. Kayen, R.E.S. Moss
2004, Journal of Geotechnical and Geoenvironmental Engineering (130) 1314-1340
This paper presents'new correlations for assessment of the likelihood of initiation (or triggering) of soil liquefaction. These new correlations eliminate several sources of bias intrinsic to previous, similar correlations, and provide greatly reduced overall uncertainty and variance. Key elements in the development of these new correlations are (1) accumulation of...
Preliminary results of a dam-removal analysis on brewster creek near st. Charles, Illinois, 2002-2004
K.M. Kosky, T. D. Straub, D.P. Roseboom, G.P. Johnson
D'Ambrosio J.L., editor(s)
2004, Conference Paper, Proceedings of the 2004 Self-Sustaining Solutions for Streams, Wetlands, and Watersheds Conference
The benefits of gradually removing a dam (through multiple notches) are to reduce the total project cost and reduce possible environmental effects by allowing the impounded sediment to slowly move downstream, and a stable stream and revegetated floodplain to form upstream. Notching, in this study of a dam on Brewster...
The Coso geothermal area: A laboratory for advanced MEQ studies for geothermal monitoring
B.R. Julian, G.R. Foulger, K. Richards-Dinger
2004, Conference Paper, Geothermal Resources Council Transactions
The permanent 16-station network of three-component digital seismometers at the Coso geothermal area, California, supplemented by 14 temporary instruments deployed in connection with the DOE Enhanced Geothermal Systems (EGS) Project, provides high-quality microearthquake (MEQ) recordings that are well suited to monitoring a producing geothermal area. We are currently using these...
An integrated geospatial approach to monitoring the Bering Glacier system, Alaska
E.G. Josberger, J. Payne, S. Savage, R. Shuchman, G. Meadows
2004, Conference Paper, International Geoscience and Remote Sensing Symposium (IGARSS)
The Bering Glacier is the largest and longest glacier in continental North America, with an area of approximately 5,175 km2, and a length of 190 km. It is also the largest surging glacier in America, having surged at least five times during the twentieth century. The last surge of the...
Evaluation of a chinook salmon (Oncorhynchus tshawytscha) bioenergetics model
Charles P. Madenjian, Daniel V. O’Connor, Sergei M. Chernyak, Richard R. Rediske, James P. O'Keefe
2004, Canadian Journal of Fisheries and Aquatic Sciences (61) 627-635
We evaluated the Wisconsin bioenergetics model for chinook salmon (Oncorhynchus tshawytscha) in both the laboratory and the field. Chinook salmon in laboratory tanks were fed alewife (Alosa pseudoharengus), the predominant food of chinook salmon in Lake Michigan. Food consumption and growth by chinook salmon during the experiment were measured. To...
Spatial and temporal variation of Cenozoic surface elevation in the Great Basin and Sierra Nevada
T.W. Horton, D.J. Sjostrom, M.J. Abruzzese, M.A. Poage, J.R. Waldbauer, M. Hren, J. Wooden, C. P. Chamberlain
2004, American Journal of Science (304) 862-888
The surface uplift of mountain belts caused by tectonism plays an important role in determining the long-term climate evolution of the Earth. However, the general lack of information on the paleotopography of mountain belts limits our ability to identify the links and feedbacks between topography, tectonics, and climate change on...
Evaluating observations in the context of predictions for the death valley regional groundwater system
D.M. Ely, M. C. Hill, C. R. Tiedeman, G. M. O’Brien
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
When a model is calibrated by nonlinear regression, calculated diagnostic and inferential statistics provide a wealth of information about many aspects of the system. This work uses linear inferential statistics that are measures of prediction uncertainty to investigate the likely importance of continued monitoring of hydraulic head to the accuracy...
