Seismic Verification of Mixed Events

Abstract

The limitations of polarization and azimuthal filters for sorting mixed event seismic signals was quantified and a combined data processing technique, the Ellipticity Filter, was proposed. The algorithms for instrumenting the Ellipticity Filter concept for both noise-free and noise- present models were developed. The superiority of the Ellipticity Filter, however, requires the accurate calibration of the seismological stations. This problem was experimentally examined and the differences of the seismic instrumentation noted. Since considerable improvements in the VLP seismological stations have been recently achieved, it is recommended that the Ellipticity Filter technique be tested using current data.

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1975
Accession Number
ADA020591

Entities

People

  • Bernard Harris

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Analytic Functions
  • Detection
  • Dynamic Range
  • Filters
  • Filtration
  • Frequency Domain
  • High Gain
  • Instrumentation
  • Measurement
  • Resonant Circuits
  • Seismological Stations
  • Seismometers
  • Surface Waves
  • Time Domain
  • Transfer Functions
  • Tuned Circuits
  • Wave Interference

Fields of Study

  • Engineering

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Seismology
  • Systems Analysis and Design