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Page 5528, results 138176 - 138200

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Time-dependent spectral analysis of thirty-one strong-motion earthquake records
Virgilio Perez
1974, Open-File Report 74-48
Velocity response spectral analysis as a function of time for 5 percent critical damping is presented for the horizontal components of thirty-one earthquake records (61 components). A nomograph that allows conversion of the velocity response envelope to a displacement response envelope and a pseudo-absolute acceleration response envelope spectrum is also...
Floods of January 15-17, 1974, in Northwestern Montana
M. V. Johnson, R. J. Omang
1974, Open-File Report 74-38
Introduction Rain and snowmelt caused several streams in northwestern Montana to flood during January 15-17, 1974. The flooding was caused by a major rainstorm that extended from Montana through Idaho and Washington. The most damage occurred in the Kootenai River drainage, centering around the town of Libby. Also unusually high flows...
Posssible extension of mineral belts, northern part of Coeur d'Alene district, Idaho
Garland Bayard Gott, Joseph Moses Botbol
1974, Open-File Report 74-67
The ore deposits in the northern part of the Coeur d'Alene district are located within rocks of the Belt Supergroup that have been intruded by Cretaceous quartz monzonites. Lead-zinc-silver replacement veins constitute most of the deposits. The geometry of the district has been modified by post-ore faulting along the Osburn,...
Basic heat-flow data from the United States
J.H. Sass, Robert J. Munroe
1974, Open-File Report 74-9
It has been impossible to document fully in source papers, the large number of heat-flow results from the United States that have been published in recent years. The basic data of the major American research groups active in heat flow are tabulated in this report. Quantities tabulated include temperature, thermal...
Sediment characteristics of five streams near Harrisburg, Pa., before highway construction
Lloyd A. Reed
1974, Open-File Report 74-140
Rainfall, streamfiow, sediment, and turbidity data are being collected as part of a study to evaluate the effects of highway construction on sediment discharge. The study is also designed to determine the effectiveness of different erosion-control measures in reducing sediment discharges. The study area, near Enola, Pa., consists of five...
Streamflow measurement network review for hydroelectric power applications in Brazil
Francis T. Schaefer
1974, Open-File Report 74-357
This review of selected segments of the stream-gaging network of Brazil was undertaken by the writer in March and April, 1973, pursuant to an agreement between Companhia de Pesquisa de Recursos Minerais (CPRM) and Centrais Eletricas Brasileiras S.A. (ELETROBRAS) as a part of the cooperative program of the U.S. Geological...
Straight line fitting of an observation path by least normal squares
William H. Kirby
1974, Open-File Report 74-187
In curtain hydro graphic problems, and perhaps in other geophysical problems, information must be collected as profiles along straight-line courses. When the inevitable deviations from perfect linearity occur, one must then find the straight line course that best approximates the actual observation path. Classical least squares (regression) does not solve...
Storage of low-level radioactive wastes in the ground; hydrogeologic and hydrochemical factors
Stavros Stefanu Papadopulos, Isaac Judah Winograd
1974, Open-File Report 74-344
The status of mathematical simulation techniques, as they apply to radioactive waste burial sites, is briefly reviewed, and hydrogeologic and hydrochemical data needs are listed in order of increasing difficulty and cost of acquisition. Predictive modeling, monitoring, and management of radionuclides dissolved and transported by ground water can best be...