Most earthquake location algorithms are based on ray-theory travel-times and thus require as input data the onset times of body-wave phases such as P and S at a number of stations. It is often easy to detect and pick the first P onset times manually since the human eye can identify a change in amplitude or frequency in a signal even in the presence of high noise levels. The picking of S-phase onsets is more difficult because these onsets are often emergent and buried in the P coda, though at very short ranges the S onset can be impulsive...
Automatic Picker Developments and Optimization: FilterPicker—a Robust, Broadband Picker for Real-Time Seismic Monitoring and Earthquake Early Warning
Dipartimento di Scienze Fisiche, Università di Napoli Federico II, Naples, Italy; Analisi e Monitoraggio del Rischio Ambientale (AMRA) Scarl, Naples, Italy
now at Institut de Physique du Globe de Paris, Paris, France
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Anthony Lomax, Claudio Satriano, Maurizio Vassallo; Automatic Picker Developments and Optimization: FilterPicker—a Robust, Broadband Picker for Real-Time Seismic Monitoring and Earthquake Early Warning. Seismological Research Letters ; 83 (3): 531–540. doi: https://doi.org/10.1785/gssrl.83.3.531
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