Mineralogical, chemical, and physical properties of the regolith overlying crystalline rocks, Fairfax County, Virginia: a preliminary report
Gerhard W. Leo, M.J. Pavich, Stephen F. Obermeier
1977, Open-File Report 77-644
Undisturbed cores of saprolite developed on crystalline rocks of the Piedmont Province in Fairfax County, Virginia have been obtained using a combination of Shelby tubes, Denison sampler, and modified diamond core-drilling. The principal purpose of the core study is to correlate variations in chemistry, mineralogy and texture with engineering properties...
Artificial recharge for subsidence abatement at the NASA-Johnson Space Center, Phase I
Sergio Garza
1977, Open-File Report 77-219
Regional decline of aquifer head due to ground-water withdrawal in the Houston area has caused extensive land-surface subsidence. The NASA-Johnson Space Center (NASA-JSC) in southeastern Harris County, Texas, was about 13 to 19 feet above mean sea level in 1974 and sinking at a rate of more than 0.2 foot...
Structural and heat-flow implications of infrared anomalies at Mt. Hood, Oregon
Jules D. Friedman, David Frank
1977, Open-File Report 77-599
Surface thermal features occur in an area of 9700 m2 at Mt. Hood, on the basis of an aerial line-scan survey made April 26, 1973. The distribution of the thermal areas below the summit of Mt. Hood, shown on planimetrically corrected maps at 1:12,000, suggests structural control by a fracture...
A theoretical analysis of fluid flow and energy transport in hydrothermal systems
Charles R. Faust, James W. Mercer
1977, Open-File Report 77-60
A mathematical derivation for fluid flow and energy transport in hydrothermal systems is presented. Specifically, the mathematical model describes the three-dimensional flow of both single- and two-phase, single-component water and the transport of heat in porous media. The derivation begins with the point balance equations for mass, momentum, and energy....
Finite-difference model of two-dimensional, single, and two-phase heat transport in a porous medium - Version I
Charles R. Faust, James W. Mercer
1977, Open-File Report 77-234
Model documentation is presented for a two-dimensional (areal) heat-transport model capable of simulating both water- and vapor-dominated geothermal reservoirs that conform with the assumptions of the model. Finite-difference techniques are used to solve for the dependent variables pressure and enthalpy. The program is designed to simulate time-dependent problems such as...
A digital model of ground-water flow in Spanish Valley, Grand and San Juan counties, Utah
James H. Eychaner
1977, Open-File Report 77-760
No abstract available....
Frequency response of the USGS short period telemetered seismic system and its suitability for network studies of local earthquakes
Jerry P. Eaton
1977, Open-File Report 77-844
The USGS telemetered seismic system was intended primarily to record small to moderate earthquakes (magnitude 0 to 4) at distances of a few km to several hundred km. Its frequency response is such that the recorded background noise at a moderately quite Coast Range site has a relatively flat 'record'...
Factors limiting the sensitivity and dynamic range of a seismic system employing analog magnetic tape recording and a seismic amplifier with adjustable gain settings and several output levels
Jerry P. Eaton, John R. Van Schaack
1977, Open-File Report 77-224
In the course of modernizing the low-speed-tape-recorder portable seismic systems and considering the possibilities for the design of a cassette-tape-recorder seismic refraction system, the factors that limit the sensitivity and dynamic range of such systems have been reviewed. These factors will first be stated briefly, and then their influence on...
Interpretation of an aeromagnetic anomaly in McMullen and Live Oak counties, Texas
Joseph S. Duval, R.A. Martin
1977, Open-File Report 77-768
An anomaly about 300 gammas in amplitude has been observed in data from an aerial magnetic survey flown over parts of Duval, Live Oak, McMullen, and Webb Counties, Tex. A two-and-one-half-dimensional model was used to iterpret the data, and the anomaly is apparently caused by a large mafic body centered...
A computer program to calculate the resistivity and induced polarization response for a three-dimensional body in the presence of buried electrodes
Jeffrey J. Daniels
1977, Open-File Report 77-153
Three-dimensional induced polarization and resistivity modeling for buried electrode configurations can be achieved by adapting surface integral techniques for surface electrode configurations to buried electrodes. Modification of. the surface technique is accomplished by considering the additional mathematical terms required to express-the changes in the electrical potential and geometry caused by...
Analysis of runoff from small drainage basins in Wyoming
Gordon S. Craig, James G. Rankl
1977, Open-File Report 77-727
A flood-hydrograph study has defined the magnitude and frequency of flood volumes and flood peaks that can be expected from drainage basins smaller than 11 square miles in the plains and valley areas of Wyoming. Rainfall and runoff data, collected for 9 years on a seasonal basis (April through September),...
User's guide for U.S. Geological Survey rainfall-runoff models; revised 1977
Philip Hadley Carrigan Jr., David E. Bower, G.R. Dempster
1977, Open-File Report 77-884
Modified versions of the rainfall-runoff model described by Dawdy, Lichty, and Bergmann (1972) (see W72-11754) are used in the U.S. Geological Survey as a means of synthesizing flood discharges for small drainage areas. Synthesized flood discharges derived through use of long-term (60-70 year) rainfall and evaporation data, provide a more...
Ground magnetic, E-mode VLF, and radiometric surveys at Phillips Mine-Camp Smith uranium prospect, Westchester and Putnam Counties, New York
David L. Campbell, Richard I. Grauch
1977, Open-File Report 77-780
No abstract available....
Distribution of injected wastewater in the saline-lava aquifer, Wailuku-Kahului wastewater treatment facility, Kahului, Maui, Hawaii
W.L. Burnham, Steven P. Larson, Hilton H. Cooper
1977, Open-File Report 77-469
Field studies and digital modeling of a lava rock aquifer system near Kahului, Maui, Hawaii, were employed to define and describe the distribution of planned injected wastewater from a secondary treatment facility. The lava rock aquifer contains water that is almost as saline as seawater. The saline water is below...
Progress report on study of magnitude and frequency of floods on small drainage areas in Florida
W. C. Bridges
1977, Open-File Report 77-478
Long-term flood records for small basins, especially those basins of less than 10 square miles, are almost nonexistent in Florida. In July 1967 a program was begun to develop a data base to extend short-term flood-peak records for small basins by use of the U.S. Geological Survey rainfall/runoff model. Concurrent...
Strong-motion earthquake accelerograms digitization and analysis records from Lima, Peru, 1951 to 1974
A. Gerald Brady, Virgilio Perez
1977, Open-File Report 77-587
This is the second of a series of reports planned to include the results of digitization and routine analyses of strong-motion earthquake accelerograms published by the U.S. Geological Survey. Serving as a model for this effort is the collection of data reports published by the Earthquake Engineering Research Laboratory of...
Aeromagnetic maps with geologic interpretations for the Tularosa Valley, south-central New Mexico
G. D. Bath
1977, Open-File Report 77-258
An aeromagnetic survey of the Tularosa Valley in south-central New Mexico has provided information on the igneous rocks that are buried beneath alluvium and colluvium. The data, compiled as residual magnetic anomalies, are shown on twelve maps at a scale of 1:62,500. Measurements of magnetic properties of samples collected in...
Calcic soils and calcretes in the southwestern United States
George Odell Bachman, Michael N. Machette
1977, Open-File Report 77-794
Secondary calcium carbonate of diverse origins, 'caliche' of many authors, is widespread in the southwestern United States. 'Caliche' includes various carbonates such as calcic soils and products of groundwater cementation. The term 'caliche' is generally avoided in this report in favor of such terms as calcrete, calcic soils, and pervasively...
Hydrologic data for urban studies in the Houston, Texas, metropolitan area, 1975
C.E. Ranzau
1977, Open-File Report 77-274
Detailed rainfall-runoff computations, including hydrographs and mass curves, are presented for nine storm periods during the 1975 water year in drainage basins in the Houston, Texas metropolitan area. The information will be useful in determining the extent to which progressive urbanization will affect the yield and mode of occurrence of...
Hydrologic Data for Urban Studies in the Fort Worth, Texas Metropolitan Area, 1975
R.M. Slade Jr., J.M. Taylor
1977, Open-File Report 77-266
This report contains rainfall and runoff data collected during the 1975 water year for Sycamore Creek, Sycamore Creek tributary , Dry Branch, and Little Fossil Creek study areas in Fort Worth, Texas. The information will be useful in determining the extent to which progressive urbanization will affect the yield and...
Proceedings of the first annual William Pecora Memorial Symposium, October 1975, Sioux Falls, South Dakota
Priscilla W. Woll, William August Fischer, editor(s)
1977, Professional Paper 1015
The U.S. Geological Survey agreed to publish the proceeding of the first annual William T. Pecora Memorial Symposium in its Professional Paper series because the subject material is related to the mission of the Survey. The usual standards for this series have been modified to accommodate the variety of styles...
Large landslides, composed of megabreccia, interbedded in Miocene basin deposits, southeastern Arizona
Medora Louise Hooper Krieger
1977, Professional Paper 1008
The landslides in the Kearny and El Capitan Mountain quadrangles, Pinal and Gila Counties, Ariz., are tabular or lens like masses of megabreccia enclosed in Miocene basin deposits. The megabreccias within individual slide blocks are composed of pervasively brecciated Precambrian and younger formations that remain in normal stratigraphic sequence, indicating...
Stochastic analysis of particle movement over a dune bed
Baum K. Lee, Harvey E. Jobson
1977, Professional Paper 1040
Stochastic models are available that can be used to predict the transport and dispersion of bed-material sediment particles in an alluvial channel. These models are based on the proposition that the movement of a single bed-material sediment particle consists of a series of steps of random length separated by rest...
Thermal loading of natural streams
Alan P. Jackman, Nobuhiro Yotsukura
1977, Professional Paper 991
The impact of thermal loading on the temperature regime of natural streams is investigated by mathematical models, which describe both transport (convection-diffusion) and decay (surface dissipation) of waste heat over 1-hour or shorter time intervals. The models are derived from the principle of conservation of thermal energy for application to...
Analog-model analysis of regional three-dimensional flow in the ground-water reservoir of Long Island, New York
Rufus T. Getzen
1977, Professional Paper 982
A three-dimensional analog model of the ground-water system beneath Long Island, N.Y., provides a practical means for studying anisotropic flow on a regional scale. Constructional and operational techniques influence the simulation almost as much as model design does. Usefulness and accuracy of the model depend on (1) inherent and practical...
