The environment of south-central Tunisia as observed on Landsat scene 206/036
M. J. Grolier, P.A. Schultejann
1982, Open-File Report 82-130
One Landsat image in south-central Tunisia was analyzed to demonstrate the application of remote-sensing technology to regional development. A preliminary analysis included I) major landscape features; 2) gypsum-encrusted soils; and 3) phosphate-bearing beds exposed in the Gafsa mining district. The products specifically used for this report include: 1) A false-color...
Three-dimensional mathematical model for simulating the hydrologic system in the Piceance basin, Colorado
J.O. Taylor
1982, Open-File Report 82-637
Estimating peak flow characteristics at ungaged sites by ridge regression
Gary D. Tasker
1982, Open-File Report 82-333
A regression simulation model, is combined with a multisite streamflow generator to simulate a regional regression of 50-year peak discharge against a set of basin characteristics. Monte Carlo experiments are used to compare the unbiased ordinary lease squares parameter estimator with Hoerl and Kennard's (1970a) ridge estimator in which the...
Ground-water storage depletion in Pahrump Valley, Nevada-California, 1962-75
James R. Harrill
1982, Open-File Report 81-635
During the 13-year period, February 1962 to February 1975, about 540,000 acre-feet of ground water was pumped from Pahrump Valley. This resulted in significant water-level declines along the base of the Pahrump and Manse fans where pumping was concentrated. Maximum observed net decline was slightly more than 60 feet. Much...
A Two-dimensional finite-element model study of backwater and flow distribution at the I-10 crossing of the Pearl River near Slidell, Louisiana
J. K. Lee, D.C. Froelich, J. J. Gilbert, G.J. Wiche
1982, Water-Resources Investigations Report 82-4119
A two-dimensional finite-element surface-water flow modeling system was used to study the effect of Interstate Highway 10 on water-surface elevations and flow distribution during the flood on the Pearl River on April 2, 1980, near Slidell, La. A finite-element network was designed to represent the topography and vegetative cover of...
An alternative hypothesis for sink development above salt cavities in the Detroit area
Daniel Stump, A.S. Nieto, J. R. Ege
1982, Open-File Report 82-297
Subsidence and sink formation resulting from brining operations in the Windsor-Detroit area include the 1954 sink at the Canadian Salt Company brine field near Windsor, Ontario, and the 1971 sinks at the BASF Wyandotte Corporation brine field at Grosse Ile, Mich. Earlier investigations into both occurrences concluded that the mechanism...
Determination of the true density of pulverized coal samples
R.W. Stanton
1982, Open-File Report 82-835
A method using the gas-comparison pycnometer with helium gas as the penetrating medium measures precisely the true volume of a pulverized coal sample. The true density of a solid is calculated as the true unit volume of the solid exclusive of its pore space which is divided into the weight...
Regional geohydrology of the northern Louisiana salt-dome basin; Part I, conceptual model and data needs
G.N. Ryals
1982, Open-File Report 82-343
As part of the National Waste Terminal Storage Program, the U.S. Geological Survey is conducting a regional study of the geohydrology of the northern Louisiana salt-dome basin and developing a regional multi-layered ground-water flow model to determine regional flow paths. In the salt-dome basin the Tokio Formation and Brownstown Marl...
Texas Instruments Model 59 hand-calculator programs to calculate CIPW norms
R.L. Mackie
1982, Open-File Report 82-821
An oilspill risk analysis for the Gulf of Mexico outer continental shelf lease area; regional environmental impact statement
R.P. LaBelle
1982, Open-File Report 82-238
An oilspill risk analysis was conducted for the Gulf of Mexico Outer Continental Shelf (OCS)lease area region. Results of the analysis can be used to determine relative risks associated with oil production in different regions to be offered in OCS Lease Sales 72, 74, and 79. The analysis considered the...
Supplement to the New Mexico three-dimensional model
Glenn A. Hearne
1982, Open-File Report 82-857
The computer program documented in Open-File Report 80-421 has continued to evolve in response to needs. By January 1981, changes included the following: (1) treatment of head-dependent boundaries and specified-flow boundaries and (2) code which executes on the CRAY-1 computer. This report provides instructions for compiling and executing the computer...
Paleomagnetic evidence bearing on Tertiary tectonics of the Tihamat Asir coastal plain, southwestern Saudi Arabia
K.S. Kellogg, H. R. Blank
1982, Open-File Report 82-1047
Paleomagnetic directions determined for an upper Oligocene to lower Miocene dike swarm and from two lower Miocene layered gabbros in the Tihamat Asir coastal plain of southwestern Saudi Arabia are used to test several hypotheses concerning the tectonics of rifting along the eastern margin of the Red Sea. The dikes...
Procedures for assessment of cumulative impacts of coal mining on the hydrologic balance
Alan M. Lumb
1982, Open-File Report 82-334
Techniques were developed to assess the probable cumulative impacts of anticipated surface mining upon the hydrology of and area. An activity profile of cumulative drainage area versus river miles downstream from the surface mining site is constructed that shows major water uses, flood prone areas, and stream classifications. From the...
A hybrid structure for the storage and manipulation of very large spatial data sets
Donna J. Peuquet
1982, Open-File Report 82-816
The map data input and output problem for geographic information systems is rapidly diminishing with the increasing availability of mass digitizing, direct spatial data capture and graphics hardware based on raster technology. Although a large number of efficient raster-based algorithms exist for performing a wide variety of common tasks on...
A plan for hydrologic investigations of in situ, oil-shale retorting near Rock Springs, Wyoming
Kent C. Glover, E. A. Zimmerman, L. R. Larson, J.C. Wallace
1982, Open-File Report 82-758
The recovery of shale oil by the in-situ retort process may cause hydrologic impacts, the most significant being ground-water contamination and possible transport of contaminants into surrounding areas. Although these impacts are site-specific, many of the techniques used to investigate each retort operation commonly will be the same. The U.S....
Ground-water applications of remote sensing
Gerald K. Moore
1982, Open-File Report 82-240
Remote sensing can be used as a tool to inventory springs and seeps and to interpret lithology, structure, and ground-water occurrence and quality. Thermograms are the best images for inventory of seeps and springs. The steps in aquifer mapping are image analysis and interpretation and ground-water interpretation. A ground-water interpretation...
Thermodynamic properties of selected uranium compounds and aqueous species at 298.15 K and 1 bar and at higher temperatures; preliminary models for the origin of coffinite deposits
B. S. Hemingway
1982, Open-File Report 82-619
Thermodynamic values for 110 uranium-bearing phases and 28 aqueous uranium solution species (298.15 K and l bar) are tabulated based upon evaluated experimental data (largely from calorimetric experiments) and estimated values. Molar volume data are given for most of the solid phases. Thermodynamic values for 16 uranium-bearing phases are presented...
Thermal regime of permafrost at Prudhoe Bay, Alaska
A.H. Lachenbruch, J.H. Sass, B.V. Marshall, T. H. Moses Jr.
1982, Open-File Report 82-535
Temperature measurements through permafrost in the oil field at Prudhoe Bay, Alaska, combined with laboratory measurements of the thermal conductivity of drill cuttings permit an evaluation of in situ thermal properties and an understanding of the general factors that control the geothermal regime. A sharp contrast in temperature gradient at...
Computer programs for modeling flow and water quality of surface water systems
J.A. Lorens
1982, Open-File Report 82-430
A selection of available computer programs for modeling flow and water quality in surface water systems is described. The models include programs developed as part of the U.S. Geological Survey Water Resources Division hydrologic research activities and others developed by other agencies, universities, and consulting firms. Each model description includes...
Drilling results at the Farah Garan ancient mine, southwestern Saudi Arabia
Charles W. Smith, Mustafa M. Mawad
1982, Open-File Report 82-942
The Farah Garan ancient mine is located at fat 17?41'00'' N., long 43?38'15'' E. in the southwestern part of the Kingdom of Saudi Arabia. Three diamond drill holes intersected base-metal sulfides, which are present both as conformable layers in Precambrian tuffaceous volcanic rocks and as fracture fillings, irregularly shaped masses,...
Pacific summary report 2: A revision of Outer Continental Shelf oil and gas activities in the Pacific (Southern California) and their onshore impacts: A summary report, May 1980
Karen M. Collins, Catherine A. McCord, Anne Stadnychenko, Peter Yoskin
1982, Open-File Report 82-21
The Pacific Outer Continental Shelf (OCS) is an established hydrocarbon-producing region. Oil and gas have been produced from the Santa Barbara Channel (both State and Federal acreage) since 1896. Almost 77,000 barrels of oil are produced from the California Federal OCS each day as of December 1981, and leases on...
Three-dimensional modeling of the Nevada Test Site and vicinity from teleseismic P-wave residuals
Mary E. Monfort, John R. Evans
1982, Open-File Report 82-409
A teleseismic P-wave travel-time residual study is described which reveals the regional compressional-velocity structure of southern Nevada and neighboring parts of California to a depth of 280 km. During 1980, 98 teleseismic events were recorded at as many as 53 sites in this area. P-wave residuals were calculated relative to...
Field, model, and computer simulation study of some aspects of the origin and distribution of Colorado Plateau-type uranium deposits
F.G. Ethridge, D.K. Sunada, Noel Tyler, Sarah Andrews
1982, Open-File Report 82-589
Numerous hypotheses have been proposed to account for the nature and distribution of tabular uranium and vanadium-uranium deposits of the Colorado Plateau. In one of these hypotheses it is suggested that the deposits resulted from geochemical reactions at the interface between a relatively stagnant groundwater solution and a dynamic, ore-carrying...
A recommended procedure for the preparation of oriented clay-mineral specimens for X-ray diffraction analysis; modifications to Drever's filter-membrane peel technique
R. M. Pollastro
1982, Open-File Report 82-71
Extremely well-oriented clay mineral mounts for X-ray diffraction analysis can be prepared quickly and without introducing segregation using the filter-membrane peel technique. Mounting problems encountered with smectite-rich samples can be resolved by using minimal sample and partial air-drying of the clay film before transfer to a glass slide. Samples containing...
Predevelopment flow in the Tertiary limestone aquifer, southeastern United States: A regional analysis from digital modeling
Peter W. Bush
1982, Open-File Report 82-905
The Tertiary limestone aquifer of the southeastern United States is a sequence of carbonate rocks that underlies all of Florida, south Georgia, and adjacent parts of Alabama and South Carolina. It is the principal source of municipal, industrial, and agricultural water supply in south Georgia and most of Florida. The...
