A general purpose, broad-band, phase detector and picker which is applicable to real-time seismic monitoring and earthquake early-warning. FilterPicker uses an efficient algorithm which operates stably on continuous, real-time, broadband signals, avoids excessive picking during large events, and produces onset timing, realistic timing uncertainty, onset polarity and amplitude information. In practice, it operates on a pre-defined number of frequency bands by generating a set of band-passed time-series with different center frequencies. Characteristic functions are determined for each frequency band and a pick is declared if and when, within a window of predefined time width, the integral of the maximum of the characteristic functions exceeds a pre-defined threshold.

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  • Category: Data Processing
  • Language: C / C++
  • Keywords:

    picker, detector, broadband, time series, real time, Mac OS X, Linux, Solaris, Unix, C, Java

  • Citation:

    Lomax, A., C. Satriano and M. Vassallo (2012), Automatic picker developments and optimization: FilterPicker - a robust, broadband picker for real-time seismic monitoring and earthquake early-warning, Seism. Res. Lett. , 83, 531-540, doi: 10.1785/gssrl.83.3.531.

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Manager: Anthony Lomax