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Title: BOTE model: an analytic approach to predicting ground motion phenomena resulting from underground nuclear explosions

Abstract

An analytical model (the BOTE model) based upon a superposition of the limiting forms for the outgoing stress wave (i.e., a strong shock at early times decaying to a simple acoustic wave at later times) is presented as a means to describe the groundmotion phenomena resulting from underground nuclear explosions. Taking into account the effects of both the porosity and the water content of the surrounding medium, the BOTE model provides good agreement with both calculated and experimental data for times ranging from tens of microseconds to tens of milliseconds, and for distances ranging out to 350 ft/kt . (auth)

Publication Date:
Research Org.:
California Univ., Livermore (USA). Lawrence Livermore Lab.
OSTI Identifier:
4353225
Report Number(s):
UCRL-51471
NSA Number:
NSA-29-020837
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 30-JUN-74
Country of Publication:
United States
Language:
English
Subject:
N42500* -Engineering-Nuclear Explosions; *GROUND MOTION- NUCLEAR EXPLOSIONS; *NUCLEAR EXPLOSIONS- GROUND MOTION; B CODES; MATHEMATICAL MODELS; SEISMIC WAVES; UNDERGROUND EXPLOSIONS; WAVE PROPAGATION

Citation Formats

None. BOTE model: an analytic approach to predicting ground motion phenomena resulting from underground nuclear explosions. United States: N. p., 1973. Web. doi:10.2172/4353225.
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None. BOTE model: an analytic approach to predicting ground motion phenomena resulting from underground nuclear explosions. United States. doi:10.2172/4353225.
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None. Thu . "BOTE model: an analytic approach to predicting ground motion phenomena resulting from underground nuclear explosions". United States. doi:10.2172/4353225. https://www.osti.gov/servlets/purl/4353225.
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@article{osti_4353225,
title = {BOTE model: an analytic approach to predicting ground motion phenomena resulting from underground nuclear explosions},
author = {None},
abstractNote = {An analytical model (the BOTE model) based upon a superposition of the limiting forms for the outgoing stress wave (i.e., a strong shock at early times decaying to a simple acoustic wave at later times) is presented as a means to describe the groundmotion phenomena resulting from underground nuclear explosions. Taking into account the effects of both the porosity and the water content of the surrounding medium, the BOTE model provides good agreement with both calculated and experimental data for times ranging from tens of microseconds to tens of milliseconds, and for distances ranging out to 350 ft/kt . (auth)},
doi = {10.2172/4353225},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Nov 01 00:00:00 EST 1973},
month = {Thu Nov 01 00:00:00 EST 1973}
}
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Technical Report:
View Technical Report (2.89 MB)
DOI:  10.2172/4353225
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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.

  • This sourcebook is a compendium of nuclear and high-explosive empirical data and analysis of ground motion, cratering, and ejecta. It is a revised and greatly expanded version of the Nuclear Geoplosics Sourcebook published by DNA in 1964 (DASA 1285-IV). It is not meant to be a handbook but rather an authoritative sourcebook on explosion-produced ground-behavior phenomena.

  • Prediction equations were developed for peak vector acceleration, velocity, and displacement from underground nuclear explosions at Pahute Mesa. Separate equations were developed using data from stations on rock and alluvium, rock only, and alluvium only. Equations were further subdivided into three groups: all data, deletion of data with known site anomalies, and additional deletion of Yucca Mountain data. Differences in the prediction equations for the three groups using rock and alluvium and rock only were small. Alluvium only data were too sparse for valid equations. Data were normalized to remove the effects of source-energy coupling, and prediction equations recalculated. Anomalouslymore » high accelerations had been observed previously at Engine Test Stand 1 in the Nuclear Rocket Development Station area. These new data show vector accelerations 4 to 10 times predictions from events in Area 20 and smaller enhancements from events in Area 19. The area receiving the greater accelerations is concentrated at Engine Test Stand 1 and diminishes within about 4 km east and west of that station. Examination of velocity from event location to the point of measurement suggests transmission paths with a high velocity layer at a shallower depth on the path from Area 19 than from Area 20. Measurements made at Yucca Mountain indicate that qualitatively similar large accelerations exist at Yucca Mountain but with the largest observed to date only 4.19 times prediction. Since the data set for Yucca Mountain is relatively small, the possibility exists for even greater enhancements for underground nuclear explosions in locations other than those included in the data set.« less

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