Counterevasion Studies
Abstract
Fifteen earthquakes with known PDE (Preliminary Determination of Epicenters) depths have been analyzed using teleseismic short-period P-waves recorded at NORSAR. Results from this analysis indicate that misdecomposition by cepstrum analysis is unlikely, especially if the analyst follows the appropriate criteria closely. Also, two presumed underground explosions from eastern Kazakh (EKZ) have been analyzed using teleseismic short-period P-waves recorded at nine NORSAR subarrays with signal-to-noise ratio above 18 dB. Waveforms recorded at nine subarrays are quite dissimilar, especially for two subarrays on the west side of NORSAR. However, cepstrum-analyzed results are fairly consistent among them. The difference in the resolved delay times is one sampling unit (0.1 second) maximum. Although these subarrays are not located widely apart enough to be considered as separate stations at different azimuths, the good agreement of cepstrum-analyzed results among them is definitely a plus toward better recognition of the capability of the cepstrum analysis.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 1976
- Accession Number
- ADA033177
Entities
People
- David Sun
Organizations
- Texas Instruments