A Source Theory for Complex Earthquakes

Abstract

Earthquake source theories of Haskell, Brune, Savage have been drawn upon to develop a description of an earthquake as a major slip accompanied by many smaller tensional and slip events. Natural explanations of several previously unexplained observations were found, such as: Robustness of the M sub s:m sub b discriminant; P corner frequency higher than S corner frequency; High-frequency P/S amplitude ratio higher than previous theories predict; Increase of complexity as a function of third moment; Small m sub b relative to M sub s for transform faults. The theory predicts that M sub s:m sub b populations of earthquakes and explosions will not converge at small magnitudes.

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Document Details

Document Type
Technical Report
Publication Date
Apr 10, 1974
Accession Number
ADA001061

Entities

People

  • R. R. Blandford

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • California
  • Contracts
  • Data Analysis
  • Earthquakes
  • Elastic Waves
  • Equations
  • Explosions
  • Far Field
  • Frequency
  • Near Field
  • Rayleigh Waves
  • Secondary Waves
  • Seismic Arrays
  • Seismic Waves
  • Underground Explosions
  • Wave Propagation
  • Waves

Readers

  • Seismology
  • Statistical inference.
  • Theoretical Analysis.