Accession Number:

AD0870768

Title:

Horizontal Array Response of Several Wavenumber Analysis Methods.

Descriptive Note:

Seismic data lab. rept.,

Corporate Author:

TELEDYNE INDUSTRIES INC ALEXANDRIA VA EARTH SCIENCES DIV

Personal Author(s):

Report Date:

1969-12-05

Pagination or Media Count:

43.0

Abstract:

In the report the performance of a small array as regards detection and identification of signals in frequency-wavenumber space is evaluated. A two dimensional array is phased to form a one-dimensional array oriented in the direction of simulated signals. Signal discrimination is tested by varying the amplitude, velocity, frequency content and back azimuth of these generated signals. Illustrations of f-k and kx, and ky spectra plots show that, using a small array, neither the standard nor the high resolution frequency-wavenumber analysis can successfully detect small P-waves in ambient P-wave noise. It is concluded that current f-k analysis techniques when used on data from small arrays can easily produce misleading results. Author

Subject Categories:

  • Seismology
  • Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE