Fig. 7
The plane strain rate (colored contours) and the principal strain rate (black arrows) field of the West Chinese mainland, (a) the plane strain rate and the principal strain rate field of the 1999–2001 period; (b) the plane strain rate and the principal strain rate field of the 1999–2007 period, the focal mechanism solutions of No.2, No.3, No.5, and No.9 correspond to the Yutian M 7.3 earthquake in 2008, the Wenchuan M 8.0 earthquake, the Lushan M 7.0 earthquake, and the Wushi M 7.1 earthquake, respectively. The figure was created using GMT 6 (Generic Mapping Tools) software6.
