Detection and Analysis of Multiple Seismic Events

The authors have tested several methods of analyzing short-period seismic records to detect multiple events. The data were from a pair of chemical explosions at a dam site near Alma Ata, recorded at the Mould Bay, Canada, seismic observatory. The methods evaluated included visual analysis of array b...

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Bibliographic Details
Main Authors: Flinn, E A, Cohen, T J, McCowan, D W
Other Authors: TELEDYNE GEOTECH ALEXANDRIA VA SEISMIC DATA LAB
Format: Text
Language:English
Published: 1972
Subjects:
Seismology
Seismic Detection and Detectors
*SEISMIC WAVES
*UNDERGROUND EXPLOSIONS
CANADA
DETECTION
MATCHED FILTERS
MULTIPLE OPERATION
NUCLEAR EXPLOSIONS
POWER SPECTRA
SIGNAL TO NOISE RATIO
SPECTRUM ANALYZERS
SEISMIC DETECTION
SPECTRUM ANALYSIS
VELA UNIFORM
Canada
Mould Bay
Online Access:http://www.dtic.mil/docs/citations/AD0747764
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0747764
Description
Summary:The authors have tested several methods of analyzing short-period seismic records to detect multiple events. The data were from a pair of chemical explosions at a dam site near Alma Ata, recorded at the Mould Bay, Canada, seismic observatory. The methods evaluated included visual analysis of array beams, multichannel matched filtering, autocorrelation analysis, and cepstral analysis. For matched filtering the seismogram waveforms were used from a seismic event which occurred reasonably close to the Alma Ata site. Measurements using the spectra or the cepstra appear to be more accurate in determining the delay time between the two events. The analysis methods discussed here are generally in good agreement with the announced time between the explosions, and their yield ratio.

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