SURFACE WAVES IN LATERALLY INHOMOGENEOUS REGIONS

Abstract

A new model for a seismic source mechanism has been developed. The new model describes the action of a rapid phase change as a seismic source and is an alternate hypothesis to the double couple model. Great improvements have been made in the efficiency of programs for calculating surface wave dispersion curves for a layered half space. Attenuation in the layers may be taken into account directly. A transformation has been developed which maps Love wave dispersion curves for a layered half space into layered sphere dispersion curves, thus allowing use of the more efficient half space dispersion programs. Hedgehog inversion systematically identifies a range of acceptable solutions to a system of nonlinear equations. The above developments have been employed to analyze Rayleigh wave dispersion across the East Pacific Rise.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1970
Accession Number
AD0710285

Entities

People

  • David D. Jackson
  • Fred A. Schwab
  • Leon Knopoff

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Attenuation
  • Bulk Modulus
  • Earth Models
  • East Pacific Rise
  • Equations
  • Frequency
  • Group Velocity
  • Love Waves
  • Models
  • Phase Velocity
  • Physical Properties
  • Radiation Patterns
  • Rayleigh Waves
  • Stresses
  • Surface Waves
  • Wave Propagation
  • Waves

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Regression Analysis.
  • Seismology

Technology Areas

  • Space