A First Estimate of Initial Surface Motions Produced by an Underground Explosion PDF Download
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Author: H. A. Lang
Publisher:
ISBN:
Category : Explosions
Languages : en
Pages : 156
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Book Description
The method used is capable, in principle, of extension to more complex distributions of sources modeling explosions, faulting, and earthquakes. The term "primary seismogram" is introduced to imply that the displacement-time curve is free of uncertainties in source, instruments and propagational characteristics of the medium which are present in the wave records of any real seismic disturbance. The intent of the paper is to both illustrate the technique by an example and to emphasize additional problems and extensions for generating more complex primary seismograms.
Author: H. A. Lang
Publisher:
ISBN:
Category : Explosions
Languages : en
Pages : 156
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Book Description
The method used is capable, in principle, of extension to more complex distributions of sources modeling explosions, faulting, and earthquakes. The term "primary seismogram" is introduced to imply that the displacement-time curve is free of uncertainties in source, instruments and propagational characteristics of the medium which are present in the wave records of any real seismic disturbance. The intent of the paper is to both illustrate the technique by an example and to emphasize additional problems and extensions for generating more complex primary seismograms.
Author: David E. Willis
Publisher:
ISBN:
Category : Seismic waves
Languages : en
Pages : 60
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Book Description
The report summarizes one year of theoretical and applied research on propagation of seismic waves and techniques for analyzing data. The main objectives were to determine the frequency and energy of seismic signatures, and investigate attenuation, patterns of azimuthal radiation from source regions, and methods of determining the type of motion at the source. Natural and artificial sources were studied to develop diagnostic aids for distinguishing between earthquakes and underground nuclear detonations. Equipment for selection, reformatting, and digital-to-analog conversion for digitally recorded LASA data was constructed and is being checked out. Several approaches for using the parallel computational capabilities of optics for LASA data were developed. A study of background noise and reciprocity for teleseismic events as recorded on the bottom of a large fresh water lake has commenced with the emplacement of three-component seismometers in Lake Superior. Array data have been used for crustal studies on the Eastern United States. Digital mode filtering was investigated. A perturbation theory for seismic sources was developed. (Author).
Author: Richard D. Woods
Publisher:
ISBN:
Category : Soil mechanics
Languages : en
Pages : 228
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Book Description
This report contains a critical review of the literature on the dynamic testing of soils. The review was conducted prior to the design of an apparatus for dynamic direct shear tests. The specifications for the apparatus generated from this review and the preliminary design of the apparatus are presented. Included are appendixes containing annotated bibliographies (421 entries) on soil dynamics, stress-wave propagation, and nuclear and high-explosive cratering. (Author).
Author: Dean S. Carder
Publisher:
ISBN:
Category : Operation Plumbbob, Nev., 1957
Languages : en
Pages : 54
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Book Description
Author:
Publisher:
ISBN:
Category : Petroleum
Languages : en
Pages : 754
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Author: University of Michigan. VESIAC.
Publisher:
ISBN:
Category :
Languages : en
Pages : 388
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 60
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Book Description
Seismic effects of Rainier, a 1.7-kt nuclear shot detonated 900 feet underground, were measured in terms of ground surface motion at ten strong-motion seismograph stations located 1200 to 45,000 feet from the source. In addition, records were borrowed from seven teleseismic stations located 100 to 300 miles from the source. Recorded accelerations attenuated from a maximum singlecomponent value of 2.6 g at 1280 feet to 0.009 g at 17,640 feet. Gutenberg-Richter magnitude of Rainier, calculated as for a natural earthquake from seven WoodAnderson seismograph records, was 4.6. Earthquakes of 4.6 magnitude are felt up to 60 miles from the epicenter, however, Rainier was felt by only a few observers at 21/2 miles. Seismologists at established teleseismic stations were able to pick out Rainier's elastic wave signature on seismograms at considerable distance. Very small amplitude waves from Rainier were found on the Coast and Geodetic Survey, College, Alaska, seismogram, 3600 km away, although attempts in the eastern United States at distances of 2000 to 3000 km, using conventional instruments, were not successful.
Author: M. C. Heuston
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 500
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Author: Rand Corporation
Publisher:
ISBN:
Category : Abstracts
Languages : en
Pages : 802
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Book Description
Includes publications previously listed in the supplements to the Index of selected publications of the Rand Corportation (Oct. 1962-Feb. 1963)
Author: Robert W. Lambert
Publisher:
ISBN:
Category : Nuclear disarmament
Languages : en
Pages : 116
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Book Description
