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Fig. 3 | Earth, Planets and Space

Fig. 3

From: Seismic velocity decrease and recovery related to earthquake swarms in a geothermal area

Fig. 3

(a) Lag time and time dependence of the relative ACF phase delay. The delay is measured through cross-correlation between 1-day ACFs and the ensemble average ACF for the period of January to March 2007 with a time window of 2 s. If the maximum cross-correlation coefficient, which gives the phase delay, is less than 0.6, the delay estimate is excluded and shaded gray. (b) Average phase delay for lag times of 10–12 s (denoted by (A) in Fig. 3(a)). A circle bracketed by a one-standard deviation bar denotes the average delay for each date.

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