Simulation studies of flow and sediment transport using a mathematical model, Atchafalaya River Basin, Louisiana
Marshall E. Jennings, Larry F. Land
1977, Water-Resources Investigations Report 77-14
Simulation studies were made of flow and sediment transport for the Atchafalaya River basin, Louisiana using a mathematical model calibrated and supplied by the Hydrologic Engineering Center and the New Orleans District, U.S. Army Corps of Engineers. The study results are based on three, 50-year computer simulations for the following...
Ground water in the Lajas Valley, Puerto Rico
Henry R. Anderson
1977, Water-Resources Investigations Report 76-68
Lajas Valley is plagued with salinity and waterlogging problems of the soils. Use of brackish (500 milligrams per liter) ground water for irrigation compounded the problem until an irrigation-drainage system was constructed in 1955. Lajas Valley is an alluvium-filled trough between volcanic and limestone highlands. The alluvium, mostly clay and...
Theoretical drawdown due to simulated pumpage from the Ohio River alluvial aquifer near Siloam, Kentucky
J. M. Kernodle
1977, Water-Resources Investigations Report 77-24
Theoretical drawdown due to simulated pumpage was determined for a site near Siloam, Kentucky by using a digital ground-water-flow model. The maximum sustained yield of water from the single well was shown to be less than 900 gallons per minute, and, for a simulated pumping rate of 450 gallons per...
Training and assistance at the EROS Data Center. A slide-cassette training module
William J. Redmond
1977, Open-File Report 77-122
No abstract available....
Digital flow model of the Chowan River estuary, North Carolina
C.C. Daniel
1977, Water-Resources Investigations Report 77-63
A one-dimensional deterministic flow model based on the continuity equation had been developed to provide estimates of daily flow past a number of points on the Chowan River estuary of northeast North Carolina. The digital model, programmed in Fortran IV, computes daily average discharge for nine sites; four of these...
Electronic thermal sensor and Landsat data collection platform technology
Duane M. Preble, Jules D. Friedman, David Frank
1977, Open-File Report 77-87
Five Data Collection Platforms (DCP) were integrated electronically with thermal sensing systems, emplaced and operated in an analog mode at selected thermally significant volcanic and geothermal sites. The DCP's transmitted 3260 messages comprising 26,080 ambient, surface, and near-surface temperature records at an accuracy of ±1.15°C for 1121 instrument days between...
Uranium mobility during interaction of rhyolitic glass with alkaline solutions: dissolution of glass
Robert A. Zielinski
1977, Open-File Report 77-744
This report concerns investigations designed to identify the important physical and chemical parameters influencing the rate of release of uranium from glass shards of rhyolitic air-fall ash. Oxidizing, silica undersaturated, alkaline solutions are eluted through a column of rhyolitic glass shards at a carefully controlled temperature, pressure, and flow rate....
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...
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...
Characteristics of thin-skinned style of deformation in the southern Appalachians, and potential hydrocarbon traps
Leonard Dorrean Harris, Robert C. Milici
1977, Professional Paper 1018
This paper is an attempt to focus attention on the more important characteristics of the thin-skinned style of deformation in the southern Appalachians by presenting a model to illustrate the regional anatomy and to identify likely structures that need additional investigation as possible prospects for hydrocarbon accumulation. Five distinct changes...
Maps showing sample localities and ternary plots and graphs showing modal and chemical data for granitic rocks of the Santa Lucia Range, Salinian block, California Coast Ranges
D. C. Ross
1977, Miscellaneous Field Studies Map 799
The Alaskan Mineral Resource Assessment Program; background information to accompany folio of geologic and mineral resource maps of the McCarthy Quadrangle, Alaska
E. M. MacKevett, N. R. D. Albert, D.F. Barnes, J. E. Case, Keith Robinson, D.A. Singer
1977, Circular 739
The McCarthy 1? by 3? quadrangle, in eastern south-central Alaska, contains potentially significant resources of copper and possibly of a few other commodities. This circular and a companion folio of maps represent results of integrated field and laboratory studies in the disciplines of geology, geophysics, geochemistry, and satellite imagery that...
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....
A digital model of the Floridan Aquifer, north of Tampa, Florida
A.F. Robertson, M. J. Mallory
1977, Water-Resources Investigations Report 77-64
A regional ground-water model of the Floridan aquifer was constructed for an 875-square-mile portion of the rapidly developing area north of Tampa Bay. The digital model was calibrated by comparing observed (March 1974 and May 1975) and computed potentiometric heads. A good comparison was obtained by adjusting leakance and transmissivity....
Application of digital profile modeling techniques to ground-water solute transport at Barstow, California
Stanley G. Robson
1977, Open-File Report 77-276
Limnology of selected lakes in Ohio, 1975
Robert L. Tobin, John D. Youger
1977, Water-Resources Investigations Report 77-105
Water-quality reconnaissance by the U.S. Geological Survey and Ohio Environmental Protection Agency, to evaluate the status of Ohio's lakes and reservoirs was begun in 1975 with studies of 17 lakes. Spring and summer data collections for each lake included: profile measurements of temperature, dissolved oxygen, pH, and specific conductance; field...
Analog-model analysis of effects of waste-water management on the ground-water reservoir in Nassau and Suffolk counties, New York; Report III: Reduction and redistribution of ground-water pumpage
Arlen W. Harbaugh, Thomas E. Reilly
1977, Open-File Report 77-148
Summary of watershed conditions in the vicinity of Redwood National Park, California
Richard J. Janda
1977, Open-File Report 78-25
The Redwood Creek Unit of Redwood National Park is located in the downstream end of an exceptionally rapidly eroding drainage basin. Spatial distribution and types of erosional landforms, observed in the field and on time-sequential aerial photographs, measured sediment loads, and the lithologic heterogeneity of streambed materials indicated (1) that...
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...
Reconnaissance engineering geology of the Metlakatla area, Annette Island, Alaska, with emphasis on evaluation of earthquakes and other geologic hazards
Lynn A. Yehle
1977, Open-File Report 77-272
A program to study the engineering geology of most larger Alaska coastal communities and to evaluate their earthquake and other geologic hazards was started following the 1964 Alaska earthquake; this report about the Metlakatla area, Annette Island, is a product of that program. Field-study methods were of a reconnaissance nature,...
SIPT: a seismic refraction inverse modeling program for timeshare terminal computer systems
James Henry Scott
1977, Open-File Report 77-365
SIPB is an interactive Fortran computer program that was developed for use with a timeshare computer system with program control information submitted from a remote terminal, and output data displayed on the terminal or printed on a line printer. The program is an upgraded version of FSIPI (Scott, Tibbetts, and...
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...
Analysis of street sweepings, Portland, Oregon
Timothy L. Miller, Joseph F. Rinella, Stuart W. McKenzie, Jerry Parmenter
1977, Report
A brief study involving collection and analysis of street sweepings was undertaken to provide the U.S. Army Corps of Engineers with data on physical, chemical, and biological characteristics of dust and dirt accumulating on Portland streets. Most of the analyses selected were based on the pollutant loads predicted by the...
Petrology of basalt from the East Pacific Rise near 21 degrees North latitude
James G. Moore, William R. Normark, Gordon R. Hess, Charles E. Meyer
1977, Journal of Research of the U.S. Geological Survey (5) 753-759
Four dredge hauls of fresh tholeiitic basalt lava were recovered from a 3.3-kilometer-wide zone at the axis of the East Pacific Rise. Petrologic and major-element chemical studies indicate that the basalt ranges from moderately fractionated varieties to one sample enriched in iron and titanium. The four samples show no symmetrical...
Geology of the gabbroic complex along the northern border of the Josephine Peridotite, Vulcan Peak area, southwestern Oregon
R. A. Loney, Glen R. Himmelberg
1977, Journal of Research of the U.S. Geological Survey (5) 761-781
The terrane bordering the alpine-type Josephine Peridotite on the north in the Vulcan Peak area, southwestern Oregon, is composed of intrusive hornblende gabbro (Middle Jurassic) and scattered remnants of clinopyroxene-bearing ultramafic rocks and amphibolite. The amphibolite, which preliminary analyses suggest is of andesitic composition, has undergone regional metamorphism to the...
