3.1.2. Stress change during the 2022 Menyuan earthquake
Figure 2(l) presents the co-seismic ΔCFS map at a 10-km depth induced by the 2022 Mw 6.6 Menyuan earthquake (No. 12), and Figure 3(l) details the co-seismic ΔCFS variation along the Qilian-Haiyuan fault system at a 10-km depth induced by this event. The stress in most areas of the earthquake rupture zone was released in a 10-km depth with a maximum ΔCFS value of approximately -230 kPa during the 2022 Menyuan earthquake (Figure 3(l)). The maximum co-seismic stress release reached -921.35 kPa at a 5-km depth (Figure S1(b) and Table S3 in Supporting Information Text S3). However, the stress was promoted by 106 kPa and 145 kPa to the western and eastern ends of the earthquake rupture at a 10-km depth (segment GH in Figure 3(l)), respectively.