Above-surface Earth Motion from Underground Explosions PDF Download
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Author: Leo F. Ingram
Publisher:
ISBN:
Category : Military geology
Languages : en
Pages : 84
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Book Description
Author: Leo F. Ingram
Publisher:
ISBN:
Category : Military geology
Languages : en
Pages : 84
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Book Description
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 :
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: D. C. Sachs
Publisher:
ISBN:
Category : Blast effect
Languages : en
Pages : 118
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Book Description
Project 1.7 of Operation TEAPOT was concerned with the measurement of surface and subsurface effects of an underground explosion of a 1.2-kt nuclear burst (Shot 7). The measurements included free-field earth and airblast effects, as well as loading on underground structural devices. This report deals with the presentation and analysis of the free-field data only; the structural data have been transmitted to the appropriate agencies for their analysis. From the 76 channels installed on TEAPOT Shot 7, 75 usable records were obtained. The free-field quantities measured include air-blast pressure, earth acceleration, earth stress and strain, and permanent earth displacement. The results are discussed by phenomenon and, in each case, the TEAPOT data are compared with pretest predictions. Also, where data are available, comparisons are made with previous underground nuclear test results. Some aspects of seismology and soil mechanics as applied to underground explosion phenomena are presented and, finally, the most pertinent high explosives results from subsequent tests conducted at the TEAPOT location are summarized. (Author).
Author: United States. Congress. Joint Committee on Atomic Energy
Publisher:
ISBN:
Category : Disarmament
Languages : en
Pages : 488
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Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1256
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Book Description
Author: Lewis J. Cauthen (Jr.)
Publisher:
ISBN:
Category : Blast effect
Languages : en
Pages : 38
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Book Description
Author: United States. Bureau of Yards and Docks
Publisher:
ISBN:
Category : Building, Bombproof
Languages : en
Pages : 154
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Book Description
Author: United States. Congress. Joint Committee on Atomic Energy
Publisher:
ISBN:
Category : Blasting
Languages : en
Pages : 780
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Book Description
Considers H.R. 477 and identical H.R. 10288 and companion S. 1885, to amend the Atomic Energy Act to authorize AEC to provide peaceful nuclear explosives to commercial domestic and foreign concerns under an expanded Plowshare Program. Includes report "Nuclear Construction Engineering Technology" by Lt. Col. Bernard C. Hughes, Sept. 1968 (p. 447-629).
Author: D. S. CARDER
Publisher:
ISBN:
Category :
Languages : en
Pages : 83
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Book Description
Ground effects resulting from certain HARDTACK II underground explosions were measured by strong-motion and teleseismic seismographs from 2000 feet to distances of nearly 100 miles. In addition, many temporary seismographs were operated by a number of organizations to distances of nearly 2400 miles, and routine seismographs continued to operate on a world wide basis. Some of the results are given in this report. An energetic wave believed reflected from the surface near the source was recorded by some of the strong-motion seismographs. It is out of phase with the initial wave and follows it by about a quarter second. From the ground effects standpoint, the Blanca shot was equivalent to a magnitude 4.8 earthquake, and seismic energy contained in a wave 0.8 km. from the source is believed to contain about 0.4 percent of the yield energy. The Logan and Rainier shots were respectively equivalent to magnitude 4.5 and 4.1 earthquakes and corresponding seismic energies contained respectively 0.5 and 0.3 percent of the yield energy.
