False Alarm Probabilities for Mixed Events
TELEDYNE GEOTECH ALEXANDRIA VA SEISMIC DATA ANALYSIS CENTER
Pagination or Media Count:
Analysis of 1,471 P- and PKP-coda indicates that the probability of an unexplained phase occurring in a coda of an event as recorded at a single station is 0.12 for a detection threshold on the order of 3.5db signal-to-coda background. The average coda length is roughly six minutes 343 seconds for the events examined. The probability, therefore, that the seismograms at four stations out of thirteen will exhibit unexplained phases in the coda of a given earthquake is 0.045.
- Seismic Detection and Detectors