Models for Calculating Close-in Motions from Underground Nuclear Explosions PDF Download
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Author: Paul R. Beaudet
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Category : Seismic waves
Languages : en
Pages :
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Author: Paul R. Beaudet
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Category : Seismic waves
Languages : en
Pages :
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Author:
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Category : Nuclear energy
Languages : en
Pages : 1090
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Author:
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Category :
Languages : en
Pages :
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A physical model is proposed to describe the ground motion pattern resulting from an underground nulear explosion in an idealized homogeneous medium. Irregular behaviors in the observed ground motion are assumed to be perturbations caused by the local inhomogeneity of the ground medium. Our model correlates the ground motions at any point in the spalled zone to the initial acceleration pulse at the ground zero. Interestingly, the model predicts that the ground motion first comes to a stop at a definite radius about the ground zero, and the region expands both outward and inward as time goes on. We believe that this result is closely related to a phenomenon observed at NTS. In the far field approximation, we also calculate the overpressure in the lower atmosphere generated by the ground motion. We demonstrate that the irregular component of the ground motion does not affect the overpressure history in any significant way. Consequently the model ground motion can be used as a good approximation in generating the atmospheric overpressure.
Author:
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Category : Nuclear energy
Languages : en
Pages : 1036
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Author:
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Category :
Languages : en
Pages :
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This report provides a detailed presentation and critique of a model used to characterize the surface ground motion following a contained, spalling underground nuclear explosion intended for calculation of the resulting atmospheric acoustic pulse. Some examples of its use are included. Some discussion of the general approach of ground motion model parameter extraction, not dependent on the specific model, is also presented.
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Category : Aeronautics
Languages : en
Pages : 1038
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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author:
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Category : Power resources
Languages : en
Pages : 472
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Author: International Atomic Energy Agency
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Category :
Languages : en
Pages : 1036
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Author: Defense Documentation Center (U.S.)
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Category : Science
Languages : en
Pages : 1148
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Author:
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Category : Earth movements
Languages : en
Pages : 362
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