Large sand waves on the Atlantic Outer Continental Shelf around Wilmington Canyon, off Eastern United States
H.J. Knebel, D. W. Folger
1976, Marine Geology (22) M7-M15
New seismic-reflection data show that large sand waves near the head of Wilmington Canyon on the Atlantic Outer Continental Shelf have a spacing of 100-650 m and a relief of 2-9 m. The bedforms trend northwest and are asymmetrical, the steeper slopes being toward the south or west. Vibracore sediments...
Preliminary survey of modern glaciolacustrine sediments for earthquake-induced deformational structures, south-central Alaska
Michael J. Rymer, John D. Sims
1976, Open-File Report 76-373
Bottom sediments of four lakes in South-Central Alaska were studied in the summer of 1975 for evidence of earthquake-induced deformation. The lakes are: Summit, Upper Trail, and Skilak, all on the Kenai Peninsula, and Eklutna, northeast of Anchorage (fig. 1). Interest in these lakes was stimulated by hypotheses developed from...
Numerical modeling of subsurface radioactive solute transport from waste seepage ponds at the Idaho National Engineering Laboratory
John B. Robertson
1976, Open-File Report 76-717
Aqueous chemical and low-level radioactive effluents have been disposed to seepage ponds since 1952 at the Idaho National Engineering Laboratory. The solutions percolate toward the Snake River Plain aquifer (135 m below) through interlayered basalts and unconsolidated sediments and an extensive zone of ground water perched on a sedimentary layer...
A stochastic model for predicting the probability distribution of the dissolved-oxygen deficit in streams
I.I. Esen, R. E. Rathbun
1976, Professional Paper 913
Heat flow and near-surface radioactivity in the Australian continental crust
J.H. Sass, J.C. Jaeger, Robert J. Munroe
1976, Open-File Report 76-250
Heat-flow data have been obtained at 44 sites in various parts of Australia. These include seven sites from the old (~ 2500 m.y.) Precambrian shield of Western Australia, seventeen from the younger (~ 600- 2000 m.y.) Precambrian rocks of South Australia, the Northern Territory, and Queensland, and twenty within the...
Analog-model analysis of effect of wastewater management on the ground-water reservoir in Nassau and Suffolk Counties, New York: Report I: Proposed and current sewerage
Grant E. Kimmel, Arlen W. Harbaugh
1976, Open-File Report 76-441
By 1995, the water table may fall by as much as 5 metres (16 feet) in east-central Nassau County and as much as 1.8 metres (6 feet) in central Suffolk County as a result of proposed sewerage programs. similar, but generally slightly less, change may occur in the potentiometric head...
Hydrology and sedimentation of Bixler Run Basin, central Pennsylvania
Lloyd A. Reed
1976, Water Supply Paper 1798-N
Rainfall, streamflow, stream chemical, and sediment discharge data were collected from Bixler Run near Loysville, Pa., during the period from February 1954 to September 1969 as part of a project to evaluate sediment discharge from an agricultural area in which soil-conservation techniques were being adopted at a moderate rate. The...
Determining availability of LANDSAT imagery at the EROS Data Center: a slide-cassette training module
James A. Nickerson
1976, Open-File Report 76-21
No abstract available....
Tests of the standard (30 hz) NCER FM multiplex telemetry system, augmented by two timing channels and a compensation reference signal, used to record multiplexed seismic network data on magnetic tape
Jerry P. Eaton
1976, Open-File Report 76-374
The application of subtractive compensation to USGS seismic magnetic tape recording and playback systems was examined in a recent USGS Open-file report (1). It was found, for the standard (30 Hz) NCER multiplex system, that subtractive compensation utilizing a 4688 Hz reference signal multiplexed onto each data track was more...
Documentation of finite-difference model for simulation of three-dimensional ground-water flow
Peter C. Trescott, S. P. Larson
1976, Open-File Report 76-591
User experience has indicated that the documentation of the model of three-dimensional ground-water flow (Trescott and Larson, 1975) should be expanded. This supplement is intended to fulfill that need. The original report emphasized the theory of the strongly implicit procedure, instructions for using the groundwater-flow model, and practical considerations for...
Programmable calculators; modern instruments for analyzing hydrologic data
David V. Maddy
1976, Open-File Report 75-642
Laboratory manual: mineral X-ray diffraction data retrieval/plot computer program
Phoebe L. Hauff, George Van Trump
1976, Open-File Report 76-407
The Mineral X-Ray Diffraction Data Retrieval/Plot Computer Program--XRDPLT (VanTrump and Hauff, 1976a) is used to retrieve and plot mineral X-ray diffraction data. The program operates on a file of mineral powder diffraction data (VanTrump and Hauff, 1976b) which contains two-theta or 'd' values, and intensities, chemical formula, mineral name, identification...
Finite difference model for aquifer simulation in two dimensions with results of numerical experiments
Peter C. Trescott, George Francis Pinder, S. P. Larson
1976, Techniques of Water-Resources Investigations 07-C1
The model will simulate ground-water flow in an artesian aquifer, a water-table aquifer, or a combined artesian and water-table aquifer. The aquifer may be heterogeneous and anisotropic and have irregular boundaries. The source term in the flow equation may include well discharge, constant recharge, leakage from confining beds in which...
A cross-section plotting program (CSPP) for gridded (map) data
Richard B. Wells, Charles R. Faust, James W. Mercer
1976, Open-File Report 76-689
A FORTRAN program that prepares the Calcomp plotter tape for drawing cross-sections from gridded map data is described and documented. The program accepts gridded data of the form Z(x,y), where Z is the value at the grid intersection, (x,y). Up to 10 sets of Z(x,y) data for a given grid...
Implications of a magnetic model of the Long Valley Caldera, California
D.L. Williams
1976, Open-File Report 76-439
Geologic interpretation of an aeromagnetic map of the west-central Columbia Plateau, Washington and Oregon
Donald A. Swanson, Thomas L. Wright, Isidore Zietz
1976, Open-File Report 76-51
A low altitude, total intensity aeromagnetic map of the ?west-central Columbia Plateau, underlain principally by the Yakima Basalt,. shows Positive and negative anomalies that stand out from a moderate intensity .background reflecting .interbedded flows of normal and reversed magnetic polarity. One set of anomalies is related to anticlinal ridges, nother...
Integration of geological remote-sensing techniques in subsurface analysis
James V. Taranik, Charles M. Trautwein
1976, Open-File Report 76-402
Geological remote sensing is defined as the study of the Earth utilizing electromagnetic radiation which is either reflected or emitted from its surface in wavelengths ranging from 0.3 micrometre to 3 metres. The natural surface of the Earth is composed of a diversified combination of surface cover types, and geologists...
A modification of Shapiro's technique for determining low levels of CO 2 in silicate rocks
John R. Watterson, Walter H. Ficklin, John Hopkins Turner
1976, Open-File Report 76-530
Chemical analyses of 183 rocks from the Modoc mine area, Lander County, Nevada
Paul E. Venuti, Ted G. Theodore
1976, Open-File Report 76-301
SELECT, EXTRACT, SETUP: a set of computer programs for searching and modifying local earthquake data
J. Alan Steppe
1976, Open-File Report 76-342
15/16 ips Operation of the Precision Instrument Company Model P15100 tape recorder to record the standard (30 Hz) NCER seismic data multiplex system
Jerry P. Eaton
1976, Open-File Report 76-252
In recent months the need has arisen to record special seismic networks consisting of a dozen or more standard NCER seismic systems telemetered to a central collection point on a reliable, portable, low-power tape recorder. Because of its simplicity and the ease with which it can be adapted for the...
Status of ground-water modeling in the U.S. Geological Survey
Charles A. Appel, J.D. Bredehoeft
1976, Circular 737
The U.S. Geological Survey is active in the development and use of models for the analysis of various types of ground-water problems. Types of problems for which models have been, or are being, developed include: (1) ground-water flow in saturated or partially unsaturated materials, (2) land subsidence resulting from ground-water...
Economic worth of hydrologic data in project design: An application to regional energy development
M.R. Karlinger
1976, Open-File Report 76-316
The linkage between the benefits to a regional economy from a water-dependent industry and the statistical uncertainty of the water supply that is needed in the production process is analyzed using a Bayesian scheme of expected-expected benefits of hydrologic data. In this analysis, expected benefits are calculated using anticipated streamflow...
Computer applications for step-backwater and floodway analyses
James O. Shearman
1976, Open-File Report 76-499
A computer program which can be used to computer water-surface profiles for gradually varied, subcritical flow is described. Profiles are computed by the standard step-backwater method. Water-surface profiles may be obtained for both existing stream conditions and for stream conditions as modified by encroachment. The user may specify encroachment patterns...
Model for evaluating the effects of dikes on the water and salt balance of Great Salt Lake, Utah
K.M. Waddell, Fred K. Fields
1976, Open-File Report 76-256
No abstract available....
