Open AccessReal‐Time Event Detection, Phase Identification and Source Location Estimation Using Single Station Three‐Component Seismic Data
Author(s) -
Roberts R. G.,
Christoffersson A.,
Cassidy F.
Publication year - 1989
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.1989.tb00517.x
Subject(s) - coda , azimuth , seismology , geology , window (computing) , geodesy , component (thermodynamics) , earthquake location , arrival time , identification (biology) , phase (matter) , seismic array , p wave , principal component analysis , seismic wave , remote sensing , computer science , induced seismicity , optics , physics , artificial intelligence , botany , quantum mechanics , biology , thermodynamics , medicine , engineering , transport engineering , atrial fibrillation , cardiology , operating system
Summary A new technique for the analysis of three‐component seismic data from a single station is presented. Based upon the auto‐ and cross‐correlations of the three orthogonal components within a short time window an assessment is made of whether these data are consistent with the arrival of a P‐wave or a linearly polarized S‐wave which has a vertical component of motion. In many cases the procedure can discriminate between a major P‐phase and S‐phases or later arriving P‐phases from analysis of the coda after the first detected arrival. the method is computationally efficient, providing for P‐wave detections including estimates of azimuth, apparent surface velocity, and (for teleseismic events) source location, in real time on a small personal computer.