Continuation of the Iranian Long-Period Array Evaluation

Abstract

This report presents a continuation of the evaluation of long-period data recorded at the Iranian Long Period Array (ILPA). This evaluation was performed by Texas Instruments Inc., at the Seismic Data Analysis Center in Alexandria, Va. In the area of long-period noise analysis, this report discusses RMS noise levels and trends and average noise RMS amplitude spectra for both the individual sites and the beamformed data. The array noise data is also used to investigate the questions of noise coherence and propagating noise. In the area of signal analysis, signal-to-noise ratio gains due to beamforming and site-to- site signal similarities are investigated. Using a processed data base of 613 events, regionalized detection capability estimates and earthquake-presumed explosion discrimination are presented. Finally, the report briefly presents a comparison of the array and the closest Seismic Research Observatory station.

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Document Details

Document Type
Technical Report
Publication Date
Dec 30, 1977
Accession Number
ADA055702

Entities

People

  • Alan C. Strauss
  • Lynn A. Shaner

Organizations

  • Texas Instruments

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Data Analysis
  • Data Processing
  • Databases
  • Detection
  • Digital Data
  • Earthquakes
  • Explosions
  • Frequency
  • High Resolution
  • Information Science
  • Love Waves
  • Plastic Explosives
  • Recording Systems
  • Surface Waves
  • Tape Recording
  • Waveforms

Fields of Study

  • Engineering

Readers

  • Business Analytics
  • Seismology