Estimation of ground motion parameters
David M. Boore, W. B. Joyner, A.A. Oliver, R.A. Page
1978, Circular 795
Strong motion data from western North America for earthquakes of magnitude greater than 5 are examined to provide the basis for estimating peak acceleration, velocity, displacement, and duration as a function of distance for three magnitude classes. A subset of the data (from the San Fernando earthquake) is used to...
A computer program designed to produce tables from alphanumeric data
Jennie L. Ridgley, Robert Wayne Schnabel
1978, Open-File Report 78-875
This program is designed to produce tables from alphanumeric data. Each line of data that appears in the table is entered into a data file as a single line of data. Where necessary, a predetermined delimiter is added to break up the data into column data. The program can process...
Methods of estimating recharge to the Floridan aquifer in northeast Florida
G. G. Phelps
1978, Water-Resources Investigations Report 77-109
Recharge to the principal artesian aquifer in a six-county area in northeast Florida was calculated using closed contour methods , water budgets, and formulas for computing leakage through confining beds. Each estimate was tested in a computer model of groundwater flow to see which estimate was best. Calculations of flow...
Summary appraisals of the nation's ground-water resources – Great Lakes region
William G. Weist Jr.
1978, Professional Paper 813-J
The Great Lakes Regions, as a whole, has abundant supplies of water. Nearly 805,000 billion cubic feet of water is contained in the Great Lakes. An additional 35,000 billion cubic feet of potable ground water is available from storage in the region. Estimated ground-water discharge to the streams and lakes...
Users guide for distributed routing rainfall-runoff model
D.R. Dawdy, John C. Schaake Jr., William M. Alley
1978, Water-Resources Investigations Report 78-90
A computer program of a watershed model for routing urban flood discharges through a branched system of pipes or natural channels using rainfall as input has been developed and documented. The model combines soil-moisture-accounting and rainfall-excess components developed by Dawdy and others (1972) with the kinematic-wave routing method presented by...
Results and interpretation of exploratory drilling near the Picacho Fault, south-central Arizona
Thomas L. Holzer
1978, Open-File Report 78-1016
Modern surface faulting along the Picacho fault, east of Picacho, Arizona, has been attributed to ground-water withdrawal. In September 1977, three exploratory test holes were drilled 5 km east of Picacho and across the Picacho fault to investigate subsurface conditions and the mechanism of the faulting. The holes were logged...
Computer program for a generic western coal region simulated model developed to investigate potential applications of system dynamics modeling to the EIS process
R. K. Mark, D. S. Harwood, Richard R. Doell, E. B. Newman
1978, Open-File Report 78-321
A statistical summary and listing of the spectrographic analyses of heavy mineral concentrate and conventional, sieved stream-sediment samples, Silver City area, New Mexico
K. C. Watts, J.R. Hassemer, D. F. Siems, J. M. Nishi
1978, Open-File Report 78-801
Geochemical sampling of a tier of eight 7 1/2-minute quadrangles bordered by latitudes 32° 45'and 33° 00' N. and longitudes 108° 00' and 108° 30' W. was begun in the fall of 1974 and continued seasonally until completion in the fall of 1976. These quadrangles are in southwest New Mexico...
Effects of coal mine subsidence in the western Powder River basin, Wyoming
C. Richard Dunrud, Frank W. Osterwald
1978, Open-File Report 78-473
Analyses of the surface effects of past underground coal mining in the western Powder River Basin suggest that underground mining of strippable coal deposits will damage the environment more over long periods of time than will modern surface mining, provided proper restoration procedures are followed after surface mining. Subsidence depressions...
Backwater at bridges and densely wooded flood plains, Bogue Chitto near Summit, Mississippi
B.E. Colson, C. O. Ming, George J. Arcement
1978, Hydrologic Atlas 592
New techniques for predicting water-surface profiles, needed in the design of economical, structurally sound, and environmentally compatible stream crossings, are under investigation. The investigation has accelerated with the advent of digital computers capable of analyzing large quatities of data. Among the techniques is the development of two-dimensional (2-D) digital models....
Proposed parameters for an automated mapping satellite (Mapsat) system
Alden P. Colvocoresses
1978, Open-File Report 78-932
Landsats-1, -2, and -3, although not defined as mapping satellites, are in fact effectively recording the Earth in a form suitable for presentation as small-scale image maps. These spacecraft have demonstrated the effectiveness of Earth sensing, which must now move from the research to the operational phase. Landsat-D is designed...
Postulated model of uranium occurrence in the central mining area, Marysvale District, west-central Utah
Charles G. Cunningham, Thomas August Steven
1978, Open-File Report 78-1093
Uranium in the central mining area of Marysvale, Utah occurs in hydrothermal veins cutting granitic and volcanic rocks in the eastern source area of the Mount Belknap Volcanics. A preliminary model for the origin of the veins envisages deposition in near-surface fractures above an unexposed pluton that may host a...
Computer model of two-dimensional solute transport and dispersion in ground water
Leonard F. Konikow, J.D. Bredehoeft
1978, Techniques of Water-Resources Investigations 07-C2
This report presents a model that simulates solute transport in flowing ground water. The model is both general and flexible in that it can be applied to a wide range of problem types. It is applicable to one- or two-dimensional problems involving steady-state or transient flow. The model computes changes...
Flood profiles for Peace River, south-central Florida
W. R. Murphy Jr., K.M. Hammett, C. V. Reeter
1978, Water-Resources Investigations Report 78-57
This report presents flood heights and profiles for a 70-mile reach of Peace River from Bartow to Arcadia, Fla. The flood heights were calculated using the U.S. Geological Survey step-backwater model. Profiles were prepared for floods having expected recurrence intervals of 2, 2.33, 5, 10, 25, 50, 100, 200, and...
Plan of study for the High Plains regional aquifer-system analysis in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
John B. Weeks
1978, Water-Resources Investigations Report 78-70
The Ogallala Formation and associated Tertiary and Quarternary deposits form the principal aquifers supporting irrigation in the High Plains of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. The volume of water in storage within the aquifers is declining in most of the High Plains because water...
Hot, deep origin of petroleum: shelf and shallow basin evidence and application
Leigh C. Price
1978, Open-File Report 78-1021
Oil and gas pools in shallow basins or on the shallow, stable shelves of deeper sedimentary basins may not be exceptions to the model of a hot deep origin of petroleum. The oil in shallow basins is directly associated with faulting extending out of the deepest parts of the basin....
Geology of the uranium prospect at Camp Smith, New York, with a new model for the formation of uranium deposits in metamorphosed submarine volcanogenic rocks
Richard I. Grauch
1978, Open-File Report 78-949
Uraninite of Precambrian age occurs locally in and around a massive sulfide deposit at Camp Smith, Westchester and Putnam Counties, New York. The host rocks are believed to be part of a sequence of marine sediments and submarine volcanogenic rocks that were metamorphosed to leucogneisses, amphibolites, and amphoholite gneisses in...
Postcrystalline deformation of the Pelona Schist bordering Leona Valley, southern California
James George Evans
1978, Professional Paper 1039
Detailed structural investigations in part of the Leona Valley segment of the San Andreas fault zone, 5-16 km west of Palm dale, focused on the postcrystalline deformation of the block of Mesozoic(?) Pelona Schist underlying Portal and Ritter Ridges. The early fabric of the schist is modified and in places...
Electron-microprobe study of chromitites associated with alpine ultramafic complexes and some genetic implications
M. L. Bird
1978, Open-File Report 78-119
Electron-microprobe and petrographic studies of alpine chromite deposits from around the world demonstrate that they are bimodal with respect to the chromic oxide content of their chromite. The two modes occur at 54 ? 4 and 37 ? 3 weight per cent chromic oxide corresponding to chromite designated as high-chromium...
Mass movement and storms in the drainage basin of Redwood Creek, Humboldt County, California — A progress report
Deborah Reid Harden, Richard J. Janda, K. Michael Nolan
1978, Open-File Report 78-486
Numerous active landslides are clearly significant contributors to high sediment loads in the Redwood Creek basin. Field and aerial-photograph inspections indicate that large mass-movement features, such as earthflows and massive streamside debris slides, occur primarily in terrain underlain by unmetamorphosed or slightly metamorphosed sedimentary rocks. These features cannot account for...
Eolian sand and interbedded organic horizons at Kealok Creek on the Arctic Coastal Plain of Alaska: possible regional implications
L. David Carter, S.W. Robinson
1978, Open-File Report 78-320
Eolian sand has long been recognized as a widespread but minor facies of supposedly dominantly marine sediments of the Gubik Formation of the Arctic Coastal Plain (Smith and Mertie, 1930; Black, 1951 and 1964; O'Sullivan, 1961). Descriptions of eolian landforms of the coastal plain have been published by several authors,...
Simulation model of Cryptomonas ovata population dynamics in southern Kootenay Lake, British Columbia
James E. Cloern
1978, Ecological Modelling (4)-133
A one-dimensional transient model is developed to simulate observed population dynamics of a small flagellate (Cryptomonas ovata) in southern Kootenay Lake, B.C., during a 1-year period (1 June 1974-31 May 1975). The model considers advective displacement of C. ovata as water flows from its southern entrance into the lake and moves northward...
A von Bertalanffy growth model with a seasonally varying coefficient
James E. Cloern, Frederic H. Nichols
1978, Journal of the Fisheries Research Board of Canada (35) 1479-1482
The von Bertalanffy model of body growth is inappropriate for organisms whose growth is restricted to a seasonal period because it assumes that growth rate is invariant with time. Incorporation of a time-varying coefficient significantly improves the capability of the von Bertalanffy equation to describe changing body size of both...
Digital and photographic processing study for shallow seas mapping from landsat
Brian P. Bauer, Lincoln Perry
1978, Report
The application of contrast stretch and haze removal techniques to Landsat/MSS imagery for shallow seas bathymetry is discussed. The application of these techniques is based upon procedures inherent in the EDIPS system processing. Application of both MSS band 4 and band 5 data are discussed in lx and 3x gain...
Oxygen isotope composition of subglacially precipitated calcite: Possible paleoclimatic implications
B.B. Hanshaw, B. Hallet
1978, Science (200) 1267-1270
Isotopic analyses of subglacially precipitated calcite from near a modern temperate glacier show that the δ18O (= 18O/ 16O relative to standard mean ocean water) of the calcite records the δ18O of the ice from that glacier. It may therefore be possible to determine the δ18O of Pleistocene ice sheets on the...
