ANALYSIS OF GROUND MOTION AND CONTAINMENT

Abstract

The pre-shot predictions and evaluations of ground motion, stemming and containment are presented and compared with the available observed data. The analysis of seismic data included corrections for frequency response of the instruments, derivation of nonrecorded motions by differentiation and integration, and filtering of the seismic signals to derive amplitude-frequency relationships. Observed ground motions were lower than expected from a coupled (fully tamped) explosion of equal size. The peak accelerations and velocities displayed high rates of attenuation compared to Salmon. Relatively small azimuthal variations were observed. Peak motions were associated with frequencies between 3 and 80 hz. A noticeable decrease in frequency with increasing distance was observed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 26, 1968
Accession Number
AD0669483

Entities

People

  • Lawrence L. Davis

Tags

Communities of Interest

  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Amplitude
  • Corporations
  • Displacement
  • Energy
  • Environment
  • Equations
  • Explosions
  • Exponential Functions
  • Frequency
  • Frequency Response
  • Groundwater
  • Instrumentation
  • Interpolation
  • Physical Properties
  • Radiation
  • Step Functions
  • Surface Zero

Readers

  • Control Systems Engineering.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Seismology