Following the mainshock of the 2008 M8 Wenchuan Earthquake, there were more than 300 M ≥4.0 aftershocks that occurred between May 12, 2008 and Sept. 8, 2010. We analyzed the broadband waveforms for these events and found 160 events with sufficient signal-to-noise levels to invert for seismic moment tensors. Considering the length of the activated fault and the distances to the recording stations four velocity models were employed to account for variability in crustal structure.
