STUDY OF SHORT-PERIOD SEISMIC NOISE
Semiannual technical summary rept. no. 6, 1 Jan-30 Jun 1965
GEOTECHNICAL CORP GARLAND TX
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This report describes work on short-period seismic noise, signals, and signal-to-noise ratios. It includes 1 a section on statistical measurements of noise and some sampling techniques in use, 2 a section on visual and spectral techniques that were used to detect body waves in the short- period noise recorded by a deep-hole array at Grapevine, Texas, 3 a section on a filtered narrow-band seismograph that was designed to reduce noise outside the band of maximum signal information at Las Cruces, New Mexico, and 4 a section on highermode Rayleigh waves as recorded by deep-hole seismographs at Fort Stockton, Texas.