Research of Seismogenic Structures of the 2016 and 2022 Menyuan Earthquakes, in the Northeastern Tibetan Plateau

On 8 January 2022, a Moment Magnitude (Mw) 6.7 earthquake occurred in Menyuan, China. The epicenter was located the western segment of Lenglongling fault Qilian-Haiyuan zone. In this area, Mw 5.9 Menyuan on 26 August 1986 and 21 2016 successively occurred. seismogenic structures earthquakes are Northern fault, which is few kilometers away from fault. After 2022 earthquake, we collected GF-7 Sentinel-1 satellite images to measure surface deformation sequence. Based elastic dislocation theory, model slip distribution Mengyuan were inverted using coseismic displacements. results show that event reverse event, with maximum displacement LOS reaching cm. strike, dip, rake rupture 139°, 41°, 78°, 0.6 m at depth km. ran WNW–ESE direction 72 main 112°, 85°, 3°, 4 Coulomb failure stress change shows sequence generated considerable positive more than 2 bar. These observations suggest around mainly governed by activities northeastern Tibetan Plateau. addition, their sequential occurrences could be related earthquake-triggering mechanisms due interaction different deforming faults. Thus, has received great amount attention regarding its potential hazards.