Bulletin of the Seismological Society of America
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Bulletin of the Seismological Society of America; June 1974; v. 64; no. 3-1; p. 581-594
© 1974 Seismological Society of America
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Secondary sources of seismic waves from underground nuclear explosions

DONALD L. SPRINGER

LAWRENCE LIVERMORE LABORATORY UNIVERSITY OF CALIFORNIA, LIVERMORE, CALIFORNIA 94550

Abstract

Surface-reflected seismic energy from underground explosions, in the form of a pP phase and a spall-closure (slapdown) phase, Ps, may contribute to the P wave and coda seen at teleseismic distances. In this report, delay times corresponding to pP – P and Ps – P are estimated from surface-zero accelerograms for a number of U.S. underground nuclear explosions and are presented for use by the seismological community. When compared with published estimates, these pP – P estimates are in reasonable agreement but the Ps – P estimates are at wide variance. No ready explanation is at hand for the disagreement.






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Copyright © 1974 by the Seismological Society of America.