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Seismic P Phase Picking Using a Kurtosis-Based Criterion in the Stationary Wavelet Domain

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3 Author(s)
Galiana-Merino, J.J. ; Dept. of Phys., Univ. of Alicante, Alicante ; Rosa-Herranz, J.L. ; Parolai, S.

The seismic P phase first arrival identification is a fundamental problem in seismology. The accurate identification of the P -wave first arrival is not a trivial process, particularly when the seismograms present a very low signal-to-noise ratio (SNR) or are contaminated with artificial transients that could produce false alarms. In this paper, a new approach based on higher order statistics and the stationary wavelet transform is presented. The P onset is obtained under a statistical criterion applied in the time-frequency domain. The results have been compared to those estimated by another P phase picking algorithm and P onsets picked by expert analysts. The comparison shows that our proposed method efficiently provides a good estimate of the P onset picks that are consistent with analyst picks, particularly in cases of very low SNR.

Published in:

Geoscience and Remote Sensing, IEEE Transactions on  (Volume:46 ,  Issue: 11 )

Date of Publication:

Nov. 2008

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