Fig. 2

Summary of inversion results. a Azimuthal equidistant projection of the station distribution used in the inversion. The star denotes the epicenter (Lanza et al. 2019). Triangles denote station locations; the waveforms for the four stations indicated with red triangles are shown in b. The circles represent epicentral distances of 30° and 100°. b Observed (upper black trace) and synthetic (lower red trace) waveforms at the stations marked in red in a. Station codes and maximum amplitudes are shown at the top. c Potency density tensors on the assumed model plane. The map view in the top panel shows the top row of tensors on the assumed model plane, represented by the black line, and gray lines indicate surface ruptures (Langridge et al. 2016). The profile in the bottom panel shows the tensors on the assumed model plane. Note that the beach balls in the map are shown as a lower-hemisphere projection in the map and as a cross-section view from the southeast side in the bottom panel. Beach balls in the bottom panel are colored based on a Frohlich diagram (Frohlich 2001), in which blue is reverse faulting (T), green is strike-slip faulting (SS), red is normal faulting (N), and gray is other. The star denotes the hypocenter (Lanza et al. 2019). d Moment-rate function