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- W2371781871 abstract "To process the vast data produced by the Item of CHINA-Array,STA/LTA method was used for detecting onsets of events and AIC method was used to improve the accuracy of the onset time.To see the effect of the association of the two methods,18 events were chosen to be analyzed.To solve the problem of wrong touch off,the Power Spectral Density of the events with low magnitude had been calculated and analyzed,so the main frequency band of the events were gained for us to change the filter to filter more unavailable signals.Then we got the window length of the STA/LTA which fit the events with low magnitude. As to the low magnitude events,the touch off parameters were set to be sensitive,so most signals which have the similar frequency and duration time with low magnitude events could be detected.The results showed that 99%events were detected successfully and the accuracy percentage of the onset time was 96.5% by the using of STA/LTA method to detect onsets of events and AIC method to correct the onset time.For the events whose magnitude is lower than 2.0,98% of them were detected successfully and the accuracy percentage of the onset time was96%.This study decreased the analysis time and improved the efficiency largely.It has significant meaning for the research on the structure inversion,the research on the source mechanism of events with low magnitude,the earthquake distribution in different faults and other researches of seismology and geophysics by the using of CHINA-Array data." @default.
- W2371781871 created "2016-06-24" @default.
- W2371781871 creator A5047751882 @default.
- W2371781871 date "2015-01-01" @default.
- W2371781871 modified "2023-09-23" @default.
- W2371781871 title "Automatic onset phase picking for China array data set" @default.
- W2371781871 hasPublicationYear "2015" @default.
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