Counterevasion studies. Semi-annual technical report No. 6 (Pt. B), 1 Nov 1975--31 May 1976
Fifteen earthquakes with known PDE (Preliminary Determination of Epicenters) depths were 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) were 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.
- Research Organization:
- Texas Instruments, Inc., Dallas (USA)
- DOE Contract Number:
- F44620-73-C-0055
- OSTI ID:
- 7116199
- Report Number(s):
- AD-A-033177; TI-ALEX-(02)-tr-76-01-Pt-B
- Country of Publication:
- United States
- Language:
- English
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