Development of LP Wave Discrimination Capability Using LP Strain Instruments

Abstract

The final report describes the development, construction, operation, data collection and data processing associated with the strain/inertial seismograph at Queen Creek, Arizona (QC-AZ), from 1 July 1968 to 1 June 1972. Strain seismographs were matched in sensitivity, amplitude, and phase to long- period (LP) inertial seismographs at 100K magnifications. Strain sensitivities of 2.5 x 10 to the minus 13th power at 30 sec were achieved. Operating magnifications were limited by ambient unrest of the ground which even for this quiet site was 6 dB or more above instrument noise at all periods from 0.1 to 2560 sec. The strain and inertial seismographs were combined to form an on-line directional array to enhance and to separate seismic waves. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 15, 1972
Accession Number
AD0748232

Entities

People

  • James E. Fix
  • John R. Sherwin

Organizations

  • Teledyne Technologies

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Barometric Pressure
  • Computational Science
  • Computer Programs
  • Convection
  • Crystal Structure
  • Data Analysis
  • Doppler Effect
  • Electronic Components
  • Geography
  • Materials Laboratories
  • Materials Processing
  • Measurement
  • Mechanics
  • Meteorology
  • Resonant Frequency
  • Ridges
  • Stress Strain Relations

Fields of Study

  • Environmental science

Readers

  • Seismology