Download or read book Some Seismic Effects of Underground Explosions in Cavities written by George L. Lamb and published by . This book was released on 1960 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Further Studies of the Seismic Characteristics of Russian Explosions in Cavities Implications for Cavity Decoupling of Underground Nuclear Explosions written by and published by . This book was released on 1996 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides a summary of the results of a joint research program under which scientists from S-CUBED have been working with scientists from the Russian Institute for Dynamics of the Geospheres in an attempt to develop a better understanding of the effects of cavity decoupling on the seismic signals produced by underground nuclear explosions. Investigations conducted under this program have focused on analyses of seismic data recorded from a series of HE cavity decoupling experiments conducted by the Russians in Kirghizia in 1960, and from a sequence of nuclear tests conducted in a water-filled cavity at the Soviet Azgir test site during the period 1975-1979. The Kirghizia series included tests designed to assess the influence of cavity geometry on decoupling effectiveness, and comparisons of near-field seismic data recorded from these tests indicate that the low frequency decoupling factor is independent of cavity shape for elongated cavities with length to width ratios of 6 or more, in agreement with previous theoretical simulation results. Broadband seismic data recorded from the Azgir water-filled cavity tests are analyzed to estimate cavity/tamped source spectral ratios, and the results are compared with theoretical finite difference simulations of these tests.

Download or read book Use of Large Cavities to Reduce Seismic Waves from Underground Explosions Final Report written by and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report analyzes an experiment designed to test the theory of seismic decoupling of underground explosives proposed by Latter LeLevier, Martinelli, and McMillan STA1959!. The theory calculates the amplitude of a l.7- kt nuclear explosive in a hole in salt and compares it to the measured value of the 1.7-kt Rainier shot in tuff at the same distance. A decoupling factor of about 300 resulted. The experiment, called Cowboy, was designed to test the decoupling principle by carrying out a series of eight highexplosive shots in two spheres made in a salt dome and nine tamped shots for comparison purposes. The seismic data reported were obtained primarily at 14,000 and 22,000 ft from the shot at frequencies of lO to 30 cps. A salt-to-salt decoupling factor of 100 was obtained which is consistent with the predicted 300 tuff-to-salt factor. When the sphere was over-driven so that the walls did not move elastically (a condition which violates the theory), decoupling factors of 10 and 30 were measured. The report interprets the seismic data to give the dependence of decoupling on the varions parameters of the experiment. The decoupling deduced from measurements made 80 ft from the shot points is found to be oonsistent with teat deduced from the measurements at 14,000 and 12,000 ft. (auth).

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geophysical Abstracts written by and published by . This book was released on 1962 with total page 1702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seismic effects of underground explosions authorized tr written by Institut fiziki Zemli im. O.I︠U︡. Shmidta and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geophysical Abstracts 184 January March 1961 written by and published by . This book was released on 1961 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geological Survey Bulletin written by and published by . This book was released on 1962 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seismic Effects of Underground Explosions written by Institut fiziki Zemli im. O.I︠U︡. Shmidta and published by . This book was released on 1962 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hearings and Reports on Atomic Energy written by United States. Congress. Joint Committee on Atomic Energy and published by . This book was released on 1962 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Developments in the Field of Detection and Identification of Nuclear Explosions Project Vela and Relationship to Test Ban Negotiations written by United States. Congress. Joint Committee on Atomic Energy and published by . This book was released on 1962 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on cooperative AEC-NASA-DOD RPD programs to apply nuclear power to rocket propulsion and spacecraft power systems.

Download or read book Geophysical Abstracts 184 187 January December 1961 written by and published by . This book was released on 1962 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book TTHE GENERATION OF THE PRIMARY SEISMIC SIGNAL BY A CONTEINED EXPLOSION written by CARL KISSLINGER` and published by . This book was released on 1963 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Identification of Seismic Sources Earthquake or Underground Explosion written by Eystein S. Husebye and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 867 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this NATO Advanced Study Institute was seismic monitoring under a nuclear test ban - an application of scienti fic knowledge and modern technology for a political purpose. The international political objective of a comprehensive nuclear test ban provided in turn the motivation for our technical and scientific discussions. In order to obtain a historical perspec tive on the progress of the work towards a comprehensive test-ban treaty (CTB), it is necessary to go back to 1958, when a confer ence of scientific experts in Geneva made the first steps toward an international seismic monitoring system. However, agreement on actual capabilities of a monitoring system for verifying compliance with such a treaty was not achieved, and thus the conference did not lead to immediate political results. After the Partial Test Ban Treaty of 1963, which banned nuclear explosions in the atmosphere, outer space and under the seas, renewed interest in the seismological verification of a CTB took place. A number of countries initiated large-scale research efforts toward detecting and identifying underground nuclear explosions, and it was in this context that the large aperture seismic arrays NORSAR and LASA were established. This type of development resulted in excellent seismic data in digital form and was thus of great irnprotance to the seismological com munity.

Download or read book The Strength of Underground Cavities of Spherical and Spheroidal Geometry written by Joseph Matthew Green and published by . This book was released on 1961 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expressions are exhibited for the static-stress distribution over the surface of a degenerate prolate spheroidal cavity which is subjected to a given internal pressure and a given lithostatic loading at infinity. The hoop stress is evaluated at the apex of the spheroidal cavity and is compared with the hoop stress at the corresponding point of a spherical cavity, which is subjected to the same loading. Both cavities are presumed to fail when the hoop stress ceases to be compressive. It is shown that the maximum internal pressure which may be sustained by each of the cavities depends on the Poisson ratio. For certain values of the Poisson ratio, the spherical cavity can actually contain larger internal pressures than the spheroidal cavity, in spite of the fact that when the cavities are 'empty' the spheroidal cavity has a hoop stress at its apex which is more compressive than that of the spherical cavity. These conclusions are of interest in the choice of a geometry for underground cavities which are designed to contain materials held at very high pressures. (Author).

Download or read book Analyses of the Seismic Characteristics of U S and Russian Cavity Decoupled Explosions written by and published by . This book was released on 1994 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a summary of the initial results of an on-going joint research program in which S-CUBED scientists are working with Russian scientists from the Institute for Dynamics of the Geospheres in an attempt to develop a better understanding of the effects of cavity decoupling on the seismic signals produced by underground nuclear explosions. This program includes analyses of seismic data recorded from a series of 10 tamped and 12 decoupled HE tests which were conducted in cavities of different sizes and shapes in Kirghizia in 1960, a theoretical evaluation of the influence of radiation diffusion effects on nuclear cavity decoupling efficiency and an analysis of data recorded from six small (0.01 to 0.50 kt) Russian nuclear tests conducted in a 32 m radius, water-filled cavity in salt at the Azgir test site. (MM).

Download or read book Peaceful Uses for Nuclear Explosives written by and published by . This book was released on 1964 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: