Determination of Seismic Source Parameters from Frequency Dependent Rayleigh and Love Wave Radiation Patterns

Abstract

Both exhaustive and non-linear spectral fitting procedures are applied to far-field surface wave data for determining seismic source parameters, especially depth. These procedures were applied to a series of events with decreasing control on the source parameters. High quality Rayleigh wave data from the Southeastern Missouri Earthquake of October 21, 1965 was analyzed, and the parameter corroboration with independent estimates was good, with excellent spectral fits. Two low magnitude (mb = 4.1) Italian events were analyzed individually and by taking spectral ratios. Six events from Sinkiang were analyzed, again using both techniques. Initial efforts are directed towards determining the importance of the parameter variations; it was found that depth has the greatest effect on the shape of the spectra.

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1973
Accession Number
AD0778996

Entities

People

  • David F. D. Sun
  • Jeffrey S. Shaub
  • Lawrence S. Turnbull Jr.

Organizations

  • Texas Instruments

Tags

Communities of Interest

  • Air Platforms
  • Counter IED
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Doppler Effect
  • Earth Models
  • Earthquakes
  • Explosives
  • Far Field
  • Frequency
  • Frequency Bands
  • Group Velocity
  • Love Waves
  • Plastic Explosives
  • Radiation
  • Radiation Patterns
  • Rayleigh Waves
  • Regression Analysis
  • Surface Waves
  • United States

Readers

  • Computational Modeling and Simulation
  • Seismology