Lg Wave Excitation and Propagation in the Presence of One-, Two-, and Three-Dimensional Heterogeneities

Abstract

The scattering of Lg waves by point heterogeneities in a crustal waveguide is considered. Computer simulations lead to inferences of the behavior of the scattering mechanism which helps understand observed facts about the shear wave coda, especially the relationship between the lag time at which measurements are made and the inferred coda Q. A second study reports on problems on some routine processing techniques used for long period surface wave analysis. The influence of spectral shape on inferred spectral amplitudes is discussed. Keywords: Lg wave scattering; Phase matched surface-wave filters.

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Document Details

Document Type
Technical Report
Publication Date
Jul 15, 1987
Accession Number
ADA187364

Entities

People

  • R. B. Herrmann

Organizations

  • Saint Louis University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Atmospheric Sciences
  • Doppler Effect
  • Earth Sciences
  • Ecology
  • Elastic Waves
  • Filters
  • Geography
  • Geology
  • Geometry
  • Geophysics
  • Planetary Sciences
  • Scattering
  • Secondary Waves
  • Surface Waves
  • United States
  • Wave Propagation

Readers

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

Technology Areas

  • AI & ML