Frequency Dependent Attenuation in Rocks

Abstract

A comparison of laboratory Q values calculated from phase angles and hysteresis loop areas reveals an inconsistency. Q values calculated from hysteresis loops are a factor of 4 times greater than those from the phase angle. The source of this inconsistency is the definition of maximum strain energy for a hysteresis loop. An accounting of this factor of 4 is significant in comparing various experimental results that have used either of the two techniques. Keywords: Seismic waves, Attenuation; Anisotropy; Rock properties; Stress strain relations; Granite; Laboratory tests.

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Document Details

Document Type
Technical Report
Publication Date
Oct 03, 1988
Accession Number
ADA205276

Entities

People

  • Karl B. Coyner
  • Randolph J. Martin

Tags

DTIC Thesaurus Topics

  • Air Force
  • Earth Sciences
  • Frequency
  • Geography
  • Geology
  • Geophysics
  • Glaciology
  • Materials
  • Measurement
  • New England
  • Observatories
  • Planetary Sciences
  • Security
  • Seismic Waves
  • Seismology
  • Stress Strain Relations
  • United States

Readers

  • Geotechnical Engineering.
  • Mechanical Engineering/Mechanics of Materials.
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