Combined Studies
Abstract
This final report summarizes the material covered in six previous semiannual technical reports, and discusses the conclusions obtained from these studies. The counterevasion studies were concerned with the evaluation and application of two techniques: complex cepstrum analysis and eigenspectrum analysis. These techniques were used to separate interfering seismic signals in order to distinguish underground nuclear explosions hidden in larger earthquakes, for the identification of sequential underground nuclear explosions, and for the detection of the pP depth phase. In addition, a new study on the effect of sampling rate on the detection of the pP depth phase is also presented. The main topic of the far-field research was directed toward the determination of seismic source parameters using teleseismic surface wave spectra. Techniques were developed to fit theoretical spectra generated using a double couple source in a layered half-space to observed spectra corrected to a near source reference point. Several procedures were used to correct the observed spectra for effective attenuation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 1976
- Accession Number
- ADA033463
Entities
People
- David Sun
- Lawrence S. Turnbull Jr.
Organizations
- Texas Instruments