A Multistep Method for Automatic Determination and Optimization of Microseismic P-Phase Arrival Times in a Coal Mine

<div>Result of the first arrival picking using the AIC method. (a) A typical MS signal; (b) scaling figure from red part of (a) and two vertical lines show the first arrival time (onset time) and terminal time (offset time); (c) local eigenvalue of AIC method; and (d) global eigenvalue in the whole period.</div>

Advances in Civil Engineering

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Figure 1

Figure 1: A Multistep Method for Automatic Determination and Optimization of Microseismic P-Phase Arrival Times in a Coal Mine 