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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SALTWATER INTRUSION IN A HIGHLY TRANSMISSIVE UNCONFINED AQUIFER.
Saltwater intrusion is particularly dynamic in coastal Dade County because of the high permeability of the Biscayne aquifer, because of the good interconnection between canals and the aquifer, and because of the seasonal rainfall. The problem is accentuated as urban growth continues to encroach on inland wetland areas which results in lowered inland water levels. This lowering reduces the seaward
Authors
Bradley G. Waller
SEISMIC-REFLECTOR DATABASE SOFTWARE.
The seismic data analysis (SDA) software system facilitates generation of marine seismic reflector databases composed of reflector depths, travel times, root-mean-square and interval velocities, geographic coordinates, and identifying information. System processes include digitizing of seismic profiles and velocity semblance curves, merging of velocity and navigation data with profile travel-time
Authors
Evelyn L. Wright, John-Paul Hosom
SIMULATION OF PEANUT GROWTH IN OKLAHOMA.
Two peanut growth models of varying complexity were calibrated for Oklahoma varieties and growing conditions. Both models predicted pod growth quite well. The models were then used to simulate the effects of various soil moisture levels on peanut growth. The more complex model has potential as a management tool.
Authors
Gerald D. Grosz, Ronald L. Elliott, James H. Young
SITE AMPLIFICATION OF EARTHQUAKE GROUND MOTION.
When analyzing the patterns of damage in an earthquake, physical parameters of the total earthquake-site-structure system are correlated with the damage. Soil-structure interaction, the cause of damage in many earthquakes, involves the frequency-dependent response of both the soil-rock column and the structure. The response of the soil-rock column (called site amplification) is controversial becau
Authors
Walter W. Hays
STRIKE SLIP ON REACTIVATED TRIASSIC(? ) BASIN BOUNDARY FAULT ZONES AS SOURCES OF EARTHQUAKES NEAR CHARLESTON, S. C.
Interpretation of several thousand kilometers of multifold seismic reflection data supports the old theory that earthquakes in the Charleston, S. C. area are associated with reactivated Triassic(? ) basin boundary extensional fault zones. The Gants-Cooke fault zone associated with the Jedburg basin in the 1886 meizoseismal area, an unnamed fault along the margin of the Branchville basin in the Bow
Authors
John C. Behrendt, Annette Yuan
STRONG-MOTION INSTRUMENTATION OF STRUCTURES IN CHARLESTON, SOUTH CAROLINA AND ELSEWHERE.
Instrumentation of structures is part of earthquake hazard mitigation program of many institutions, including the United States Geological Survey (USGS). The USGS Strong-Motion Instrumentation of Structures Program is designed to complement other programs and to implement its own, within budget and other constraints. This paper reviews the overall national effort, cites examples of structures impl
Authors
M. Çelebi, R. Maley
SULFUR CONTENT OF THE COAL RESOURCES OF THE UNITED STATES: CURRENT STATUS.
The sulfur content of United States coal can be assessed using a variety of approaches. The sulfur content may be expressed in terms of total sulfur in the coal, pounds of sulfur per million Btu, or sulfur remaining after reduction by coal preparation. In addition, sulfur content may be applied to the demonstrated reserve base or to coal resource estimates. Unfortunately, current data bases do not
Authors
C. B. Cecil, F.T. Dulong
THERMAL-ENERGY STORAGE IN A DEEP SANDSTONE AQUIFER IN MINNESOTA: FIELD OBSERVATIONS AND THERMAL ENERGY-TRANSPORT MODELING.
A study of the feasibility of storing heated water in a deep sandstone aquifer in Minnesota is described. The aquifer consists of four hydraulic zones that are areally anisotropic and have average hydraulic conductivities that range from 0. 03 to 1. 2 meters per day. A preliminary axially symmetric, nonisothermal, isotropic, single-phase, radial-flow, thermal-energy-transport model was constructed
Authors
R. T. Miller
U. S. GEOLOGICAL SURVEY'S SIDE-LOOKING AIRBORNE RADAR PROGRAM: THE ALASKAN CONNECTION.
The U. S. Geological Survey (USGS) has become a major source of side-looking airborne radar (SLAR) data as a result of a Congressional mandate in 1980 to 'begin the use of side-looking airborne radar for topographic and geologic mapping, and geological resource surveys in promising areas, particularly Alaska. ' In 1982, SLAR images were acquired, with a northwest look direction of almost 13,000 km
Authors
Allan N. Kover, John Edwin Jones, Stephen J. Gawarecki
URBAN STORMWATER-QUALITY INVESTIGATIONS BY THE USGS.
U. S. Geological Survey (USGS) urban stormwater investigations, in cooperation with local and Federal agencies, have produced significant national data bases of information and enhanced understanding of urban hydrologic processes. Studies in progress include statistical regionalization of urban stormwater quality, the effects of stormwater detention on water quality, ways of improving instrumentat
Authors
Marshall E. Jennings, Timothy L. Miller
Use of hatcheries in hatchery fish management
No abstract available
Authors
J.A. Lichatowich, J.D. McIntyre