RESEARCH IN THEORETICAL AND MODEL SEISMOLOGY.

Abstract

Various aspects of model seismology were investigated including: (1) laminated two-dimensional model fabrication and property measurement; (2) the use of variable repetition rates to eliminate reverberations in finite size models; and (3) the measurement of seismic model transducer properties and the comparison with theoretical calculations. In addition, the seismic models were used to determine the diffraction of elastic waves by wedges. Arrays of transducers on seismic models were used in conjunction with a delay-line type, seismic model data processor to demonstrate frequency-wavenumber filtering techniques. A theoretical derivation and demonstration of N-dimensional feedback (or recursion) filtering are given. A computer algorithm for the accurate and automatic determination of seismic array steering delays is presented. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 16, 1967
Accession Number
AD0664941

Entities

People

  • Anthony F. Gangi

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Arrays
  • Delay Lines
  • Diffraction
  • Elastic Waves
  • Filtration
  • Frequency
  • Measurement
  • Repetition Rate
  • Seismic Arrays
  • Seismology
  • Transducers
  • Two Dimensional
  • Waves

Readers

  • Computational Modeling and Simulation
  • Phased Array Antenna Design.
  • Seismology