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Seismic decoupling for explosions in spherical cavities

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Summary

A series of paired explosions in a salt mine near Winnfield, Louisiana, has been conducted to test a theory by Dr.A. L. Latter concerning seismic decoupling by underground cavities. The theory predicted a decoupling of about 100. Free-field and surface measurements from an explosion in either a 6-ft-or a 15-ft-radius spherical cavity were compared with similar measurements from a completely tamped explosion. Shot sizes were from 20 Ib up to a few tons. Surface measurements were made out to 100 km and covered the frequency range from 0.5 to 100 cps. The experiment confirmed that decoupling does occur. The actual decoupling factor as a function of frequency is presented and compared with theLatter theory.

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References

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Authors and Affiliations

  1. Lawrence Radiation Laboratory, University of California, Livermore, California

    W. M. Adams

  2. U.S. Coast and Geodetic Survey, Washington, D.C.

    D. S. Carder

Authors
  1. W. M. Adams
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  2. D. S. Carder
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Adams, W.M., Carder, D.S. Seismic decoupling for explosions in spherical cavities. Geofisica Pura e Applicata 47, 17–29 (1960). https://doi.org/10.1007/BF01992480

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  • DOI: https://doi.org/10.1007/BF01992480

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