Figure 5: (a) Cumulative ΔCFS along the Qilian-Haiyuan fault system at a 10-km depth before 2022 caused by 11 earthquakes (Nos. 1–11) and just after 2022 caused by 12 earthquakes (Nos. 1–12). The red dashed line indicates the 2022 Mw 6.6 Menyuan earthquake rupture (segment GH) on the Qilian-Haiyuan fault system (segment BC). The longitudes of the 1990 Mw 6.2 Tianzhu (No. 7), 2016 Mw 5.9 Menyuan (No. 9), 1920 Mw 8.5 Haiyuan (No. 10), 1927 Mw 8.3 Gulang (No. 11), and 2022 Mw 6.6 Menyuan (No. 12) earthquakes epicenters are marked with blue, pink, green, red, and black stars, respectively. (b) The details of ΔCFS in the 2022 Menyuan earthquake rupture area are indicated by a black dashed line rectangle in (a).