Fig. 8
The second invariant strain rate (colored contours) and the principal strain rate (black arrows) field of the Western Chinese mainland, (a) the second invariant strain rate and the principal strain rate field of the 1999–2001 period; (b) the second invariant strain rate and the principal strain rate field of the 1999–2007 period, the focal mechanism solutions of No.1 to No.9 correspond to the West Kunlun Mountain Pass M 8.1 earthquake, the Yutian M 7.3 earthquake in 2008, the Wenchuan M 8.0 earthquake, the Yushu M 7.1 earthquake, the Lushan M 7.0 earthquake, the Yutian M 7.3 earthquake in 2014, the Jiuzhaigou M 7.0 earthquake, the Maduo M 7.4 earthquake, the Wushi M 7.1 earthquake, respectively. The figure was created using GMT 6 (Generic Mapping Tools) software6.
