DETERMINATION METHOD FOR LOCATION AND ORIGIN TIME OF EARTHQUAKE USING ARRIVAL TIME OF PRIMARY WAVE

摘要

The present invention relates to a method for determining a seismic center and an origin time of an earthquake using a travel time of P-waves for early earthquake warning and, more specifically, to a method for determining a seismic center and an origin time of an earthquake using a travel time of P-waves capable of accurately and rapidly determining where the earthquake starts (seismic center) and when the earthquake starts (origin time) by expressing a double difference obtained by subtracting a difference in predicted travel times from a difference in the travel times of the P-waves measured by different observation stations using a probability distribution function using the travel times of the P-waves detected by a little number of seismometers, and utilizing a maximum-likelihood classification by generating a likelihood function based on the probability distribution function.