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: 5519
Ground truth; in-situ properties of hydrate Ground truth; in-situ properties of hydrate
No abstract available.
Authors
David S. Goldberg, Timothy S. Collett, Roy D. Hyndman, Michael D. Max
Digital elevation models derived from small format lunar images Digital elevation models derived from small format lunar images
No abstract available.
Authors
Mark R. Rosiek, Randolph L. Kirk, Elpitha Howington-Kraus
The land cover trends project: A strategy for monitoring land cover change at a national scale The land cover trends project: A strategy for monitoring land cover change at a national scale
Policy-makers and scientists often require comprehensive data on the types and rates of land use and land cover change at a variety of scales. However, there is generally a lack of local, regional, and national land use and land cover data of sufficient reliability and temporal and geographic detail for providing accurate estimates of landscape change. The U.S. Geological Survey's EROS...
Authors
Terry L. Sohl, Thomas Loveland, Kristi L. Sayler, Alisa L. Gallant, Roger F. Auch, Darrell E. Napton
Implications of celsian in the Ruby Mountains, Elko County, Nevada Implications of celsian in the Ruby Mountains, Elko County, Nevada
The Ba-feldspar celsian [BaAl2Si2O8] has been found in quartz-skarn-sulfide deposits at the American Beauty and Summit View Mines in the Ruby Mountains, Nevada. The celsian is present in quartz-skarn-polymetallic sulfide ores formed during Jurassic and Tertiary phases of skarn formation. Well-shaped microcrystals of celsian, along with sulfide minerals and apatite, fill cavities in...
Authors
Vladimir Berger, Ted G. Theodore, Richard M. Tosdal, Robert L. Oscarson
Oil–bearing rocks of the Davenport and Point Reyes areas and their implications for offset along the San Gregorio and northern San Andreas faults Oil–bearing rocks of the Davenport and Point Reyes areas and their implications for offset along the San Gregorio and northern San Andreas faults
No abstract available.
Authors
Richard G. Stanley, Paul G. Lillis
An elevational gradient in snowpack chemical loading at Glacier National Park, Montana: implications for ecosystem processes An elevational gradient in snowpack chemical loading at Glacier National Park, Montana: implications for ecosystem processes
The accumulation and melting of mountain snowpacks are major drivers of ecosystem processes in the Rocky Mountains. These include the influence of snow water equivalent (SWE) timing and amount of release on soil moisture for annual tree growth, and alpine stream discharge and temperature that control aquatic biota life histories. Snowfall also brings with it atmospheric deposition...
Authors
Daniel Fagre, Kathy Tonnessen, Kristi Morris, George Ingersoll, Lisa McKeon, Karen Holzer
Current research efforts in decision support system technology as applied to trumpeter swan management Current research efforts in decision support system technology as applied to trumpeter swan management
No abstract available.
Authors
Richard S. Sojda, J.E. Cornely, L. H. Fredrickson, A.E. Howe
Phosphate sorption by base metal hydroxides generated in the neutralization of acid mine drainage Phosphate sorption by base metal hydroxides generated in the neutralization of acid mine drainage
No abstract available at this time
Authors
P.L. Sibrell, P.R. Adler
11 things a geologist thinks an engineer should know about carbonate beaches 11 things a geologist thinks an engineer should know about carbonate beaches
A review is given on the geological aspects of carbonate beaches that a geologist thinks may be useful for an engineer. Though, Geologists not involved in engineering problems may find it difficult to know what an engineer should understand about carbonate beaches. Nevertheless, there are at least eleven topics that are potentially very useful for engineers to keep in mind. This paper...
Authors
R. B. Halley
A comparison of solute-transport solution techniques based on inverse modelling results A comparison of solute-transport solution techniques based on inverse modelling results
Five common numerical techniques (finite difference, predictor-corrector, total-variation-diminishing, method-of-characteristics, and modified-method-of-characteristics) were tested using simulations of a controlled conservative tracer-test experiment through a heterogeneous, two-dimensional sand tank. The experimental facility was constructed using randomly distributed homogeneous...
Authors
S. Mehl, M. C. Hill
A review of the contrasting behavior of two magmatic volatiles: Chlorine and carbon dioxide A review of the contrasting behavior of two magmatic volatiles: Chlorine and carbon dioxide
Chlorine (Cl) and carbon dioxide (CO2) are common magmatic volatiles with contrasting behaviors. CO2 solubility increases with pressure whereas Cl solubility shows relatively little pressure or temperature effect. CO2 speciation changes with silicate melt composition, dissolving as carbonate in basaltic magmas and molecular CO2 in more silicic compositions. In H2O-bearing systems, the...
Authors
J. B. Lowenstern