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http://dx.doi.org/10.5467/JKESS.2018.39.6.593

Onset Time Estimation of P- and S-waves at Gyeongsan Seismic Station Using Akaike Information Criterion (AIC)  

Kwon, Joa (Department of Geological Sciences, Pusan National University)
Kang, Su Young (Institute of Geological Hazard and Industrial Resources, Pusan National University)
Kim, Kwang-Hee (Department of Geological Sciences, Pusan National University)
Publication Information
Journal of the Korean earth science society / v.39, no.6, 2018 , pp. 593-599 More about this Journal
Abstract
The onset times of P- and S-waves are important information to have reliable earthquake locations, 1D or 3D subsurface velocity structures, and other related studies in seismology. As the number of seismic stations increases significantly in recent years, it becomes a formidable task for network operators to pick phase arrivals manually. This study used a simple method to estimate additional P- and S-wave arrival times for local earthquakes when a priori information (event location and time) is available using the Akaike Information Criterion (AIC). We applied the AIC program to the earthquake data recorded at the seismic station located in Gyeongsan (DAG2). The comparisons of automatically estimated phase arrival times with manually picked onset times showed that 95.1% and 93.7% of P-wave and S-wave arrival time estimations, respectively, are less than 0.1 second difference. The higher percentage of agreement presented the method which can be successfully applied to large data sets recorded by high-density seismic arrays.
Keywords
earthquakes; automatic onset time estimation; Akaike Information Criterion (AIC); seismic array;
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Times Cited By KSCI : 2  (Citation Analysis)
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