Automatic Seismic Signal Processing
Abstract
We examined the feasibility of a post-detector as part of an automated seismic data processing system. The post-detector consisted of two parts. One is a three-component processor to determine the wave propagation , direction and distance of the signal. The other, a coherent beamforming process applied to a regional network of sensors to locate events within targeted seismically active areas of interest. Our results indicated that three-component processing is approximately equivalent to a medium-sized array in obtaining initial locations for automatic event association of detected signal. Significant detection gains were also observed, but not yet evaluated. Coherent beamforming of a regional network of sensors effectively detected and located small events in a targeted seismic region at teleseismic distance from the regional network. These preliminary results indicate that post-detection processing is sufficiently feasible to be tested on regional networks of three- component data, ideally situated at regional or teleseismic distance from targeted areas of interest.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 04, 1982
- Accession Number
- ADA123708
Entities
People
- Ilkka Noponen
- Robert Sax
- Steven Higgins