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| | Abstract | | Automatic detection of proximity Acoustic Emission (AE) doublets is described in this paper. Proximity AE doublets are microseismic data in which the second event with a similar waveform arrives before attenuation of the first event. Cepstrum of proximity AE doublets has a peak at a quefrency that shows interval between P-waves. We analyze three-component AE signal, which represents three-dimensional particle motion of AE. Quefrency of the maximum cepstrum is compared among three components. Proximity AE doublets have the maximum cepstrum at similar quefrency in three components. On the other hands, AE events except for proximity AE doublets have the maximum cepstrum at different quefrency in three components. |
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