Seismic studies of surface and body waves for improved yield determination. Quarterly report 1 Jul--30 Sep 77
The results of two research projects not previously reported are described. One of these, Determination of Crustal Structure from Surface Wave Dispersion Data, describes a recently developed method for obtaining crustal structure and gives results from application of this method to two paths in the Southwestern United States: Nevada Test Site (NTS) to Albuquerque, New Mexico and NTS to Tucson, Arizona. Phase and group velocities are determined from NTS explosion recordings. Theoretical seismograms computed with the new crustal models show remarkable agreement with observations of NTS explosions at the two stations. The second research study described is entitled Small-Scale Laboratory Simulations of Explosion Produced Body Waves - Implications for the Teleseismic Signatures of Underground Nuclear Explosions. Small-scale laboratory experiments were carried out to measure the ground motions from spherical charges. The most important feature of the experimental data is a large negative pulse that occurs at late-time in the experiments that include free-surface effects. Much of the study is directed toward determining the effect a pulse of this kind would have on the teleseismic body waves from nuclear explosions and m sub b-log yield relations.
- Research Organization:
- Systems, Science and Software, La Jolla, CA (USA)
- OSTI ID:
- 6701697
- Report Number(s):
- AD-A-049958; SSS-R-78-3448
- Country of Publication:
- United States
- Language:
- English
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