Figure 3
The map view of the relocated events. (a–c) The distribution of all relocated events. The events where ML > 1.0 are marked by magnitude-scaled circles, and smaller events (ML < 1.0) are represented by diamonds. The two beach balls in (a) represent the focal mechanisms of largest events (ML3.4 and ML3.1 in August 2013) from Zhou et al.22. The yellow area marks the Hutubi UGS. (d) The depth distribution of events before and after the start of the UGS operation is shown by the gray and red histograms, respectively.
