Abstract Based on the stratified medium model of crust and upper mantle, this study calculates the coseismic and postseismic Coulomb stress changes generated by historical M>6 earthquakes since 1822 and the interseismic stress accumulation in six fault segments near the east Anatolian fault zone by combining coseismic deformation, viscoelastic relaxation and tectonic loading effects. The results show that the overall coseismic stress change is insignificant in triggering the 2020 Elaz?? MW6.8 earthquake because of stress unloading from the 1875 M6.7 earthquake, even though 14 events contribute to the occurrence of the Elaz?? MW6.8 earthquake. Postseismic and interseismic Coulomb stress changes play important roles in triggering the Elaz?? MW6.8 earthquake. The high Coulomb stress accumulations in the Turkoglu, Lake Hazar, and Yedisu segments indicate the future seismic hazard on these zone needs more attention.
WANG Mingce,HE Zhongqiu,CHEN Ting. Recent Coulomb Stress Evolution in the East Anatolian Fault Zone and Its Triggering Relationship with the 2020 Elaz?? MW6.8 Earthquake[J]. jgg, 2022, 42(5): 526-532.
WANG Mingce,HE Zhongqiu,CHEN Ting. Recent Coulomb Stress Evolution in the East Anatolian Fault Zone and Its Triggering Relationship with the 2020 Elaz?? MW6.8 Earthquake[J]. jgg, 2022, 42(5): 526-532.
