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GEOTECH, A TELEDYNE COMPANY, P.O. BOX 28277 DALLAS, TEXAS 75228
Abstract
A digital computer process is described which examines the three-componen particle-motion pattern of seismic data as a function of frequency and uses this information to discriminate against all motion except surface waves arriving from some pre-assigned direction. Application of the process to long-period data has shown that it can substantially improve the signal-to-noise ratios of Love and Rayleigh waves from earthquakes and underground detonations.
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