Broadband Discrimination Studies
Abstract
This research effort had three main objectives: (1) Use a newly developed method for the linear inversion of seismograms to study the source mechanism of explosions and earthquakes; (2) Continue the study of forward and inverse problems for wave propagation in a layered anaelastic earth; and (3) Study the bandwidth requirements of well-behaved discriminants. A method has been developed which treats wave propagation in a layered anelastic medium in an exact manner. The method has been formulated for both body waves and surface waves and for both forward and inverse problems. A general method of estimating the first-degree spatial moment tensor of a seismic source has been developed and applied to data recorded at the Nevada Test Site. Acceleration data recorded within a few kilometers of the explosion HANDLEY and a collapse event of the explosion JORUM have been studied. The explosion is predominantly a dilatation and the collapse is predominantly a compression and both are asymmetric in the vertical direction.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 21, 1979
- Accession Number
- ADA072625
Entities
People
- L. R. Johnson
- Thomas V. McEvilly
Organizations
- University of California, Berkeley