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.
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GPS network operations for the International GPS Geodynamics Service GPS network operations for the International GPS Geodynamics Service
As GPS technology comes of age in the 1990’s, it is evident that an internationally sponsored GPS tracking system is called for to provide consistent, timely ground tracking data and data products to the geophysical community. The planning group for the International GPS Geodynamics Service (IGS), sponsored by the International Association of Geodesy (IAG), is addressing all elements of...
Authors
Ruth E. Neilan
Gravity and magnetic studies of the Wind River Reservation, Wyoming Gravity and magnetic studies of the Wind River Reservation, Wyoming
No abstract available
Authors
R.P. Kucks
Habitat use patterns of wintering shorebirds at the San Diego Bay, California. Symposium on the Behavior, Ecology, and Conservation of Western Hemisphere Shorebirds Habitat use patterns of wintering shorebirds at the San Diego Bay, California. Symposium on the Behavior, Ecology, and Conservation of Western Hemisphere Shorebirds
No abstract available at this time
Authors
B.E. Kus
Heat-flow studies in the northwest geysers geothermal field, California Heat-flow studies in the northwest geysers geothermal field, California
Temperature and thermal conductivity data were acquired from 3 idle production wells in the Northwest Geysers. Heat-flow profiles derived from data recorded in the caprock which overlies the steam reservoir reveal a decrease of heat flow with depth in 2 of the 3 wells. These observations contradict the generally accepted theory that conductive heat flow is constant with depth within The...
Authors
Colin F. Williams, S. Peter Galanis, Thomas H. Moses, Frederick V. Grubb
Hematological and serological assays to determine fish health Hematological and serological assays to determine fish health
No abstract available at this time
Authors
D. P. Anderson, A.K. Siwicki
Holocene sedimentation and coastal wetlands response to rising sea level at the Aucilla river mouth, a low energy coast in the Big Bend area of Florida Holocene sedimentation and coastal wetlands response to rising sea level at the Aucilla river mouth, a low energy coast in the Big Bend area of Florida
The shallow dip of the Florida carbonate platform results in low wave energy on Florida ???Big Bend??? coasts. Therefore sedimentation is dominated by river-and tidal-hydrodynamics near the Aucilla River mouth. Where present, Holocene sediments are thin and unconformably overlie Oligocene-aged Suwannee Limestone. The oldest unlithified sediments include reworked carbonate rubble with...
Authors
Connie Garrett, Heidi Hertler, Ronald Hoenstine, Brad Highley
Illite crystallite thickness by X-ray diffraction Illite crystallite thickness by X-ray diffraction
No abstract available
Authors
D. D. Eberl, A.E. Blum
Immunostimulation and protection from diseases in rainbow trout by glucans given by injection or bath Immunostimulation and protection from diseases in rainbow trout by glucans given by injection or bath
No abstract available at this time.
Authors
D. P. Anderson, G. Jeney
Influence of long term climate change on net infiltration at Yucca Mountain, Nevada Influence of long term climate change on net infiltration at Yucca Mountain, Nevada
Net infiltration and recharge at Yucca Mountain, Nevada, a potential site for a high level nuclear waste repository, are determined both by the rock properties and past and future changes in climate. A 1-dimensional model was constructed to represent a borehole being drilled through the unsaturated zone. The rock properties were matched to the lithologies expected to be encountered in...
Authors
Alan I. Flint, Lorraine E. Flint, Joseph A. Hevesi
Influence of seasonal climatic variability on shallow infiltration at Yucca Mountain Influence of seasonal climatic variability on shallow infiltration at Yucca Mountain
To analyze infiltration and the redistribution of moisture in alluvial deposits at Yucca Mountain, water content profiles at a 13.5 m deep borehole were measured at monthly intervals using a neutron moisture probe. Increases in water content to a maximum depth of 1.8 m in response to winter season precipitation were noted. Below a depth of 1.8 m, a gradual drying trend was indicated. A...
Authors
Joseph A. Hevesi, Alan L. Flint
Instrumentation for detailed bridge-scour measurements Instrumentation for detailed bridge-scour measurements
A portable instrumentation system is being developed to obtain channel bathymetry during floods for detailed bridge-scour measurements. Portable scour measuring systems have four components: sounding instrument, horizontal positioning instrument, deployment mechanisms, and data storage device. The sounding instrument will be a digital fathometer. Horizontal position will be measured...
Authors
Mark N. Landers, David S. Mueller, Roy E. Trent