ANALYSIS OF TFSO LONG-PERIOD NOISE SURVEY DATA

Abstract

The installation and checkout of a medium aperture long-period array at Tonto Forest Seismological Observatory is described. Methods of data selection and preparation for processing are given. Power spectra and phase velocities of the noise are computed; comparison with previously reported results show basic agreement. Coherence functions show peaks at the same frequencies in which the noise power is concentrated. In the frequency band 0.04 to 0.082 cps, the peak coherence is greater than 0.8 for station separations less than 10 kilometers. The coherence tends to decrease with increasing distance between stations.

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Document Details

Document Type
Technical Report
Publication Date
Sep 18, 1967
Accession Number
AD0822367

Entities

People

  • Dale S. Kelley

Organizations

  • Geotech Instruments (United States)

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Computations
  • Confidence Limits
  • Contracts
  • Digital Data
  • Frequency
  • Frequency Bands
  • Gaussian Processes
  • Instrumentation
  • Measurement
  • Measuring Instruments
  • Observatories
  • Phase Velocity
  • Power Spectra
  • Rayleigh Waves
  • Seismometers
  • Spectra
  • Surveys

Readers

  • Astronomy and Astrophysics.
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.