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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Data collection and documentation of flooding downstream of a dam failure in Mississippi
On March 12, 2004, the Big Bay Lake dam failed, releasing water and affecting lives and property downstream in southern Mississippi. The dam is located near Purvis, Mississippi, on Bay Creek, which flows into Lower Little Creek about 1.9 miles downstream from the dam. Lower Little Creek flows into Pearl River about 16.9 miles downstream from the dam. Knowledge of the hydrology and hydraulics of fl
Authors
K. Van Wilson
DEM, tide and velocity over sulzberger ice shelf, West Antarctica
Arctic and Antarctic ice sheets preserve more than 77% of the global fresh water and could raise global sea level by several meters if completely melted. Ocean tides near and under ice shelves shifts the grounding line position significantly and are one of current limitations to study glacier dynamics and mass balance. The Sulzberger ice shelf is an area of ice mass flux change in West Antarctica
Authors
S. Baek, C. K. Shum, H. Lee, Y. Yi, Oh-Ig Kwoun, Z. Lu, Andreas Braun
Design, implementation, and initial results from a water-quality monitoring network for Atlanta, Georgia, USA
In cooperation with the City of Atlanta, Georgia, the US Geological Survey has designed and implemented a water-quantity and quality monitoring network that measures a variety of biological and chemical constituents in water and suspended sediment. The network consists of 20 long-term monitoring sites and is intended to assess water-quality trends in response to planned infrastructural improvement
Authors
A. J. Horowitz, K. A. Elrick, J.J. Smith
Development and composition of a mixed culture for bioremediation of chlorinated ethenes and ethanes
Microbial organisms capable of dechlorinating 1,1,2,2 tetrachloroethane (TeCA) and its chlorinated ethane and ethylene daughter products were enriched in surface sediments collected from the West Branch Canal Creek wetland area, leading to the formation of two mixed cultures using slightly different enrichment methods. Both WBC-1 and WBC-2 were capable of rapid and complete reductive dechlorinatio
Authors
E.J.P. Jones, M.A. Voytek, M.M. Lorah
Development of a subunit vaccine for infectious pancreatic necrosis virus using a baculovirus insect/larvae system
Various attempts to develop a vaccine against infectious pancreatic necrosis virus (IPNV) have not yielded consistent results. Thus, at present, no commercial vaccine is available that can be used with confidence to immunize fry of salmon and trout. We generated a cDNA clone of the large genome segment A of an IPNV Sp strain and expressed all structural protein genes in insect cells and larvae usi
Authors
R.B. Shivappa, P. E. McAllister, G.H. Edwards, N. Santi, O. Evensen, V.N. Vakharia
Development of the caudal exoskeleton of the pliomerid trilobite Hintzeia plicamarginis new species
The later juvenile ontogeny of the caudal plate of the early Ordovician pliomerid trilobite Hintzeia plicamarginis new species likely comprised an initial phase during which the rate of appearance of new segments subterminally exceeded that of segment release into the thorax, a short phase of constant segment numbers, and a later phase during which release occurred but in which no new segments app
Authors
A.G. Simpson, N.C. Hughes, D. C. Kopaska-Merkel, R. Ludvigsen
Distribution and density of moose in relation to landscape characteristics: Effects of scale
We analyzed the relation between early winter distribution and density of female moose (Alces alces L.) and habitat heterogeneity in interior Alaska. We tested for effects of vegetation type, topography, distance to rivers and towns, occurrence and timing of fire, and landscape metrics. A spatial linear model was used to analyze effects of independent variables organized at multiple scales. Becaus
Authors
J.A.K. Maier, J. M. Ver Hoef, A. D. McGuire, R.T. Bowyer, L. Saperstein, H.A. Maier
Drill hole logging with infrared spectroscopy
Infrared spectroscopy has been used to identify rocks and minerals for over 40 years. The technique is sensitive to primary silicates as well as alteration products. Minerals can be uniquely identified based on multiple absorption features at wavelengths from the visible to the thermal infrared. We are currently establishing methods and protocols in order to use the technique for rapid assessment
Authors
W. M. Calvin, J.G. Solum
Early marine life history of juvenile Pacific salmon in two regions of Puget Sound
Puget Sound could differentially represent either a simple migration corridor or an important rearing environment during the potentially critical early marine residence period for different species of Pacific salmon. Recent declines in various stocks of Puget Sound salmon could reflect degraded rearing conditions or changes in temporal-spatial utilization patterns by juvenile salmon in Puget Sound
Authors
E.J. Duffy, D.A. Beauchamp, R.M. Buckley
Eco-informatics for decision makers advancing a research agenda
Resource managers often face significant information technology (IT) problems when integrating ecological or environmental information to make decisions. At a workshop sponsored by the NSF and USGS in December 2004, university researchers, natural resource managers, and information managers met to articulate IT problems facing ecology and environmental decision makers. Decision making IT problems
Authors
J.B. Cushing, T. Wilson, L. Brandt, V. Gregg, S. Spengler, A. Borning, L. Delcambre, G. Bowker, Mike Frame, J. Fulop, C. Hert, E. Hovy, J. Jones, E. Landis, J.L. Schnase, C. Schweik, W. Sonntag
Ecological structure of salt ponds, San Francisco Bay, California: Balancing tidal wetland restoration with existing beneficial habitat
No abstract available.
Authors
A.K. Miles, John Y. Takekawa, D. H. Schoellhamer, N.D. Athearn, M. K. Saiki, W.D. Duffy, S. Kleinschmidt, G.G. Shellenbarger, C.A. Jannusch, S.E. Spring
Effects of depleted uranium on survival, growth, and metamorphosis in the african clawed frog (Xenopus laevis)
Embryos (stage 8-47, Nieuwkoop and Faber) of the African clawed frog (Xenopus laevis) were subjected to water-borne depleted uranium (DU) concentrations that ranged from 4.8 to 77.7 mg/Lusing an acute 96-h frog embryo teratogenesis assay-Xenopus (FETAX). In a chronic 64-d assay, X. laevis (from embryo through metamorphosis; stages 8-66) were subjected to concentrations of DU that ranged from 6.2 t
Authors
S.E. Mitchell, C.A. Caldwell, G. Gonzales, W.R. Gould, R. Arimoto