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Conference Papers

Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.

Filter Total Items: 5346

Effects of pulsating flow on current meter performance

Summarized are laboratory tests for current meter response to pulsating flows. Included are results for mechanical and electromagnetic water-current meters that are commonly used for stream gaging. Most of the vertical-axis and horizontal-axis types of mechanical meters that were tested significantly underregistered the mean flow velocity when the magnitude of the pulsating portion of the flow vel
Authors
Janice M. Fulford

Evaluation of frequency distributions for flood hazard analysis

Many different frequency distributions and fitting methods are used to determine the magnitude and frequency of floods and rainfall. Ten different combinations of frequency distributions and fitting methods are evaluated by summarizing the differences in the 0.002 exceedance probability quantile (500-year event), presenting graphical displays of the 10 estimates of the 0.002 quantile, and performi
Authors
Wilbert O. Thomas, Minoru Kuriki, Tadashi Suetsugi

Extending and expanding the life of older current meters

The EG&G Model 610 VACM and Model 630 VMCM are standards for ocean current measurements. It is simple to add peripheral sensors to the data stream of the VACM by use of add-on CMOS circuitry. The firmware control of the VMCM makes it virtually impossible to add sampling of additional sensors. Most of the electronic components used in the VACM are obsolete or difficult to replace and the VMCM will
Authors
W.J. Strahle, Marinna A. Martini

Flooding in southeastern United States from tropical storm Alberto, July 1994

In July 1994, parts of Georgia, Alabama and Florida were devastated by floods resulting from rainfall produced by Tropical Storm Alberto. The flooding resulted in 33 human deaths in towns and small communities or near swollen streams. Total damages to public and private property were estimated at nearly $1 billion dollars. This article highlights severe stream flooding resulting from Alberto and d
Authors
Timothy W. Hale, Timothy C. Stamey

Geohydrology and water quality of the North Platte River alluvial aquifer, Garden County, Western Nebraska

In 1993, a 3-year study was begun to describe the geohydrology and water quality of the North Platte River alluvial aquifer near Oshkosh, Garden County, Nebraska. The study's objectives are to evaluate the geohydrologic characteristics of the alluvial aquifer and to establish a network of observation wells for long-term monitoring of temporal variations and spatial distributions of nitrate and maj
Authors
Gregory V. Steele, James C. Cannia

Geomorphic requirements for establishment and maintenance of cottonwood forest

No abstract available.
Authors
J. M. Friedman, G.T. Auble, M. L. Scott

Geophysical expression of the Ghost Dance fault, Yucca Mountain, Nevada

Gravity and ground magnetic data collected along surveyed traverses across Antler and Live Yucca Ridges, on the eastern flank of Yucca Mountain, Nevada, reveal small-scale faulting associated with the Ghost Dance and possibly other faults. These studies are part of an effort to evaluate faulting in the vicinity of a potential nuclear waste repository at Yucca Mountain.
Authors
D. A. Ponce, V. E. Langenheim

Geoscience research databases for coastal Alabama ecosystem management

Effective management of complex coastal ecosystems necessitates access to scientific knowledge that can be acquired through a multidisciplinary approach involving Federal and State scientists that take advantage of agency expertise and resources for the benefit of all participants working toward a set of common research and management goals. Cooperative geostatic investigations have led toward bui
Authors
Richard L. Hummell

Habitat correlates of Pacific halibut and other groundfish species in Glacier Bay National Park

Originally conceived as a modified Schnabel (1938) design mark-recapture study, the unique random sampling regime of this long line tagging study has allowed us to describe habitat correlates of Pacific halibut (Hippoglossus stenolepis) and other demersal fishes. Pacific halibut and other fish were captured by longline sets of constant length and hook number distributed in a random stratified fash
Authors
Gretchen H. Bishop, Philip N. Hooge, S. James Taggart

How much velocity information is necessary to predict sediment suspension in the surf zone?

Instantaneous horizontal water velocity, or velocity to a power, does not contain enough information to predict suspension in the surf zone. Unlike steady uniform flow, more one than one velocity is necessary to parameterize pick-up and mixing of sediment into the water column. Using a velocity history improves predictions of suspension by more carefully specifying flow conditions (including accel
Authors
Bruce E. Jaffe, David M. Rubin, Asbury Sallenger
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