Fig. 2: Saltwater injection and seismicity. | Communications Earth & Environment

Fig. 2: Saltwater injection and seismicity.

From: Bayesian inference elucidates fault-system anatomy and resurgent earthquakes induced by continuing saltwater disposal

Fig. 2

a Stacked monthly injected volume of saltwater at three disposal wells located near the epicenters of the Peace River earthquake sequence. Well I has operated since December 2012 and is injecting into the Leduc Formation, while wells II and III are injecting into shallower formations. The dashed box indicates the extent of timespan for (b) and (c). b Stacked injected volume of saltwater at three wells near the epicenters from November 2022 to March 2023, where Mw is estimated from ML for the smaller events using the relation in Supplementary Fig. S7. Public data sources are limited to total monthly injected volumes. c Time series of moment magnitudes (MW) for the Peace River earthquake sequence, between November 23, 2022, and March 23, 2023. The estimated magnitude of completeness is 1.47 and is shown as a gray horizontal line. Events analyzed in this work are shown in orange. Saltwater injection continued after the mainshock, with a reported increase in March 2023.

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