Experimental and Analytic Characterization of Nonlinear Seismic Attenuation

Abstract

In order to assess the existence and impact of mild nonlinear contributions to attenuation of seismic signals from underground explosions, data from the test SALMON have been studied. It's found that the moderate strain regime (epsilon approx. 10 to the third power) data are internally consistent with an attenuation function, Q, which is independent of amplitude over more than an order magnitude. However the attenuation is much greater than that found from small strain measurements in different experiments. Nonlinear constitutive relations are considered which allow an analytic solution for the expected transition to linear small strain behavior. Keywords include: Seismic Propagation; Nonlinear Attenuation; Nonlinear constitutive relation; SALMON data.

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Document Details

Document Type
Technical Report
Publication Date
Mar 20, 1985
Accession Number
ADA154760

Entities

People

  • G. D. Mccartor
  • W. R. Wortman

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Amplitude
  • Attenuation
  • Chemical Explosives
  • Data Sets
  • Explosions
  • Explosives
  • Frequency
  • Losses
  • Materials
  • Measurement
  • Near Field
  • Nuclear Explosions
  • Peak Values
  • Phase Velocity
  • Seismic Waves
  • Transitions
  • Wave Propagation

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Plasma Physics / Magnetohydrodynamics
  • Seismology